using `continue` in expression produces wrong result in `js` backend

[hamidb80]

Description

func number(lit: string): string =
  for b in lit:
    result.add:
      if b in '0'..'9': b
      elif b == '_': continue
      else: raise newException(ValueError, "not a valid digit")

let s = number "1_2_3"
echo s, " ", s.len

Nim Version

Nim Compiler Version 1.6.14 [Windows: amd64]
Compiled at 2023-06-27
Copyright (c) 2006-2023 by Andreas Rumpf

active boot switches: -d:release

Current Output

JS backend:

11223 5

Expected Output

like C backend:

123 3

Additional Info

same with case

[juancarlospaco]

!nim js

func f(lit: string): string =
  for b in lit:
    result.add:
      if b in '0'..'9': b
      elif b == '_': continue
      else: raise newException(ValueError, "E")
let s = f"1_2_3"
doAssert s == "123"

[github-actions]

@juancarlospaco (contributor)

devel :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:543
    throw new Error(cbuf_33556647);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(8, 1) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:543:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:302:5)
    at sysFatal_268435501 (/home/runner/work/Nim/Nim/temp:655:5)
    at raiseAssert_268435499 (/home/runner/work/Nim/Nim/temp:661:5)
    at failedAssertImpl_268435541 (/home/runner/work/Nim/Nim/temp:667:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:715:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp'

Stats

• Created 2023-07-10T13:43:04Z
• Started 2023-07-10T13:43:35
• Finished 2023-07-10T13:43:36
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI134217745 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555177 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217746 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554448 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI520093706 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI134217749 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217751 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554435 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555833 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555171 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555179 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554449 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554450 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555178 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555175 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555176 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217741 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217743 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI134217743 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217743.node = NNI134217743;
var NNI134217741 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217741.node = NNI134217741;
var NNI33555176 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555176.node = NNI33555176;
NTI33555178.base = NTI33555175;
NTI33555179.base = NTI33555175;
var NNI33555175 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555178, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554450, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554449, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554449, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555179, name: "up", sons: null}]};
NTI33555175.node = NNI33555175;
var NNI33555171 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555171.node = NNI33555171;
NTI33555175.base = NTI33555171;
NTI33555176.base = NTI33555175;
NTI134217741.base = NTI33555176;
NTI134217743.base = NTI134217741;
var NNI33555833 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554450, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554435, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554450, name: "Field2", sons: null}]};
NTI33555833.node = NNI33555833;
var NNI134217751 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217751.node = NNI134217751;
NTI134217751.base = NTI33555176;
var NNI134217749 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217749.node = NNI134217749;
NTI134217749.base = NTI33555176;
var NNI520093706 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554448, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554448, name: "b", sons: null}]};
NTI520093706.node = NNI520093706;
var NNI134217746 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217746.node = NNI134217746;
var NNI33555177 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555177.node = NNI33555177;
NTI33555177.base = NTI33555175;
NTI134217746.base = NTI33555177;
var NNI134217745 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217745.node = NNI134217745;
NTI134217745.base = NTI33555176;
function mnewString(len_33556999) {
        return new Array(len_33556999);
}
function arrayConstr(len_33557310, value_33557311, typ_33557312) {
        var result = new Array(len_33557310);
    for (var i = 0; i < len_33557310; ++i) result[i] = nimCopy(null, value_33557311, typ_33557312);
    return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557264, src_33557265, ti_33557266) {
  var result_33557275 = null;
    switch (ti_33557266.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(isFatPointer_33557255(ti_33557266))) {
      result_33557275 = src_33557265;
      }
      else {
        result_33557275 = [src_33557265[0], src_33557265[1]];
      }
      break;
    case 19:
            if (dest_33557264 === null || dest_33557264 === undefined) {
        dest_33557264 = {};
      }
      else {
        for (var key in dest_33557264) { delete dest_33557264[key]; }
      }
      for (var key in src_33557265) { dest_33557264[key] = src_33557265[key]; }
      result_33557275 = dest_33557264;
      break;
    case 18:
    case 17:
      if (!((ti_33557266.base == null))) {
      result_33557275 = nimCopy(dest_33557264, src_33557265, ti_33557266.base);
      }
      else {
      if ((ti_33557266.kind == 17)) {
      result_33557275 = (dest_33557264 === null || dest_33557264 === undefined) ? {m_type: ti_33557266} : dest_33557264;
      }
      else {
        result_33557275 = (dest_33557264 === null || dest_33557264 === undefined) ? {} : dest_33557264;
      }
      }
      nimCopyAux(result_33557275, src_33557265, ti_33557266.node);
      break;
    case 4:
    case 16:
            if(ArrayBuffer.isView(src_33557265)) { 
        if(dest_33557264 === null || dest_33557264 === undefined || dest_33557264.length != src_33557265.length) {
          dest_33557264 = new src_33557265.constructor(src_33557265);
        } else {
          dest_33557264.set(src_33557265, 0);
        }
        result_33557275 = dest_33557264;
      } else {
        if (src_33557265 === null) {
          result_33557275 = null;
        }
        else {
          if (dest_33557264 === null || dest_33557264 === undefined || dest_33557264.length != src_33557265.length) {
            dest_33557264 = new Array(src_33557265.length);
          }
          result_33557275 = dest_33557264;
          for (var i = 0; i < src_33557265.length; ++i) {
            result_33557275[i] = nimCopy(result_33557275[i], src_33557265[i], ti_33557266.base);
          }
        }
      }
      break;
    case 24:
    case 27:
            if (src_33557265 === null) {
        result_33557275 = null;
      }
      else {
        if (dest_33557264 === null || dest_33557264 === undefined || dest_33557264.length != src_33557265.length) {
          dest_33557264 = new Array(src_33557265.length);
        }
        result_33557275 = dest_33557264;
        for (var i = 0; i < src_33557265.length; ++i) {
          result_33557275[i] = nimCopy(result_33557275[i], src_33557265[i], ti_33557266.base);
        }
      }
      break;
    case 28:
            if (src_33557265 !== null) {
        result_33557275 = src_33557265.slice(0);
      }
      break;
    default: 
      result_33557275 = src_33557265;
      break;
    }
  return result_33557275;
}
function cstrToNimstr(c_33556894) {
      var ln = c_33556894.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_33556894.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_33556894.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_33556897) {
  var result_33556898 = null;
    var res_33556939 = newSeq_33556915((s_33556897).length);
    var i_33556940 = 0;
    var j_33556941 = 0;
    Label1: {
        Label2: while (true) {
        if (!(i_33556940 < (s_33556897).length)) break Label2;
          var c_33556942 = s_33556897[i_33556940];
          if ((c_33556942 < 128)) {
          res_33556939[j_33556941] = String.fromCharCode(c_33556942);
          i_33556940 += 1;
          }
          else {
            var helper_33556955 = newSeq_33556915(0);
            Label3: {
                Label4: while (true) {
                if (!true) break Label4;
                  var code_33556956 = c_33556942.toString(16);
                  if ((((code_33556956) == null ? 0 : (code_33556956).length) == 1)) {
                  helper_33556955.push("%0");;
                  }
                  else {
                  helper_33556955.push("%");;
                  }
                  helper_33556955.push(code_33556956);;
                  i_33556940 += 1;
                  if ((((s_33556897).length <= i_33556940) || (s_33556897[i_33556940] < 128))) {
                  break Label3;
                  }
                  c_33556942 = s_33556897[i_33556940];
                }
            };
++excHandler;
            try {
            res_33556939[j_33556941] = decodeURIComponent(helper_33556955.join(""));
--excHandler;
} catch (EXCEPTION) {
 var prevJSError = lastJSError;
 lastJSError = EXCEPTION;
 --excHandler;
            res_33556939[j_33556941] = helper_33556955.join("");
            lastJSError = prevJSError;
            } finally {
            }
          }
          j_33556941 += 1;
        }
    };
    if (res_33556939.length < j_33556941) { for (var i = res_33556939.length ; i < j_33556941 ; ++i) res_33556939.push(null); }
               else { res_33556939.length = j_33556941; };
    result_33556898 = res_33556939.join("");
  return result_33556898;
}
function raiseException(e_33556649, ename_33556650) {
    e_33556649.name = ename_33556650;
    if ((excHandler == 0)) {
    unhandledException(e_33556649);
    }
    e_33556649.trace = nimCopy(null, rawWriteStackTrace_33556600(), NTI33554449);
    throw e_33556649;
}
function addInt(a_33557046, b_33557047) {
        var result = a_33557046 + b_33557047;
    checkOverflowInt(result);
    return result;
}
function chckRange(i_33557320, a_33557321, b_33557322) {
  var result_33557323 = 0;
  BeforeRet: {
    if (((a_33557321 <= i_33557320) && (i_33557320 <= b_33557322))) {
    result_33557323 = i_33557320;
    break BeforeRet;
    }
    else {
    raiseRangeError();
    }
  };
  return result_33557323;
}
function chckIndx(i_33557315, a_33557316, b_33557317) {
  var result_33557318 = 0;
  BeforeRet: {
    if (((a_33557316 <= i_33557315) && (i_33557315 <= b_33557317))) {
    result_33557318 = i_33557315;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_33557315, a_33557316, b_33557317);
    }
  };
  return result_33557318;
}
function addChar(x_33557411, c_33557412) {
    x_33557411.push(c_33557412);
}
function makeNimstrLit(c_33556891) {
      var result = [];
  for (var i = 0; i < c_33556891.length; ++i) {
    result[i] = c_33556891.charCodeAt(i);
  }
  return result;
}
function eqStrings(a_33557037, b_33557038) {
        if (a_33557037 == b_33557038) return true;
    if (a_33557037 === null && b_33557038.length == 0) return true;
    if (b_33557038 === null && a_33557037.length == 0) return true;
    if ((!a_33557037) || (!b_33557038)) return false;
    var alen = a_33557037.length;
    if (alen != b_33557038.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_33557037[i] != b_33557038[i]) return false;
    return true;
}
function add_33556369(x_33556370, x_33556370_Idx, y_33556371) {
          if (x_33556370[x_33556370_Idx] === null) { x_33556370[x_33556370_Idx] = []; }
      var off = x_33556370[x_33556370_Idx].length;
      x_33556370[x_33556370_Idx].length += y_33556371.length;
      for (var i = 0; i < y_33556371.length; ++i) {
        x_33556370[x_33556370_Idx][off+i] = y_33556371.charCodeAt(i);
      }
}
function isFatPointer_33557255(ti_33557256) {
  var result_33557257 = false;
  BeforeRet: {
    result_33557257 = !((ConstSet1[ti_33557256.base.kind] != undefined));
    break BeforeRet;
  };
  return result_33557257;
}
function nimCopyAux(dest_33557268, src_33557269, n_33557270) {
    switch (n_33557270.kind) {
    case 0:
      break;
    case 1:
            dest_33557268[n_33557270.offset] = nimCopy(dest_33557268[n_33557270.offset], src_33557269[n_33557270.offset], n_33557270.typ);
      break;
    case 2:
          for (var i = 0; i < n_33557270.sons.length; i++) {
      nimCopyAux(dest_33557268, src_33557269, n_33557270.sons[i]);
    }
      break;
    case 3:
            dest_33557268[n_33557270.offset] = nimCopy(dest_33557268[n_33557270.offset], src_33557269[n_33557270.offset], n_33557270.typ);
      for (var i = 0; i < n_33557270.sons.length; ++i) {
        nimCopyAux(dest_33557268, src_33557269, n_33557270.sons[i][1]);
      }
      break;
    }
}
function auxWriteStackTrace_33556504(f_33556505) {
  var result_33556506 = [[]];
    var it_33556514 = f_33556505;
    var i_33556515 = 0;
    var total_33556516 = 0;
    var tempFrames_33556517 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555833);
    Label1: {
        Label2: while (true) {
        if (!(!((it_33556514 == null)) && (i_33556515 <= 63))) break Label2;
          tempFrames_33556517[i_33556515].Field0 = it_33556514.procname;
          tempFrames_33556517[i_33556515].Field1 = it_33556514.line;
          tempFrames_33556517[i_33556515].Field2 = it_33556514.filename;
          i_33556515 += 1;
          total_33556516 += 1;
          it_33556514 = it_33556514.prev;
        }
    };
    Label3: {
        Label4: while (true) {
        if (!!((it_33556514 == null))) break Label4;
          total_33556516 += 1;
          it_33556514 = it_33556514.prev;
        }
    };
    result_33556506[0] = nimCopy(null, [], NTI33554449);
    if (!((total_33556516 == i_33556515))) {
    result_33556506[0].push.apply(result_33556506[0], [40]);;
    result_33556506[0].push.apply(result_33556506[0], HEX24_369098760((total_33556516 - i_33556515)));;
    result_33556506[0].push.apply(result_33556506[0], [32,99,97,108,108,115,32,111,109,105,116,116,101,100,41,32,46,46,46,10]);;
    }
    Label5: {
      var j_33556550 = 0;
      var colontmp__520093811 = 0;
      colontmp__520093811 = (i_33556515 - 1);
      var res_520093813 = colontmp__520093811;
      Label6: {
          Label7: while (true) {
          if (!(0 <= res_520093813)) break Label7;
            j_33556550 = res_520093813;
            result_33556506[0].push.apply(result_33556506[0], cstrToNimstr(tempFrames_33556517[j_33556550].Field2));;
            if ((0 < tempFrames_33556517[j_33556550].Field1)) {
            result_33556506[0].push.apply(result_33556506[0], [40]);;
            addInt_301990129(result_33556506, 0, tempFrames_33556517[j_33556550].Field1);
            if (false) {
            result_33556506[0].push.apply(result_33556506[0], [44,32]);;
            addInt_301990129(result_33556506, 0, 0);
            }
            result_33556506[0].push.apply(result_33556506[0], [41]);;
            }
            result_33556506[0].push.apply(result_33556506[0], [32,97,116,32]);;
            add_33556369(result_33556506, 0, tempFrames_33556517[j_33556550].Field0);
            result_33556506[0].push.apply(result_33556506[0], [10]);;
            res_520093813 -= 1;
          }
      };
    };
  return result_33556506[0];
}
function rawWriteStackTrace_33556600() {
  var result_33556601 = [];
    if (!((framePtr == null))) {
    result_33556601 = nimCopy(null, ([84,114,97,99,101,98,97,99,107,32,40,109,111,115,116,32,114,101,99,101,110,116,32,99,97,108,108,32,108,97,115,116,41,10] || []).concat(auxWriteStackTrace_33556504(framePtr) || []), NTI33554449);
    }
    else {
      result_33556601 = nimCopy(null, [78,111,32,115,116,97,99,107,32,116,114,97,99,101,98,97,99,107,32,97,118,97,105,108,97,98,108,101,10], NTI33554449);
    }
  return result_33556601;
}
function newSeq_33556915(len_33556917) {
  var result_33556918 = [];
    result_33556918 = new Array(len_33556917); for (var i = 0 ; i < len_33556917 ; ++i) { result_33556918[i] = null; }
  return result_33556918;
}
function unhandledException(e_33556645) {
    var buf_33556646 = [[]];
    if (!(((e_33556645.message).length == 0))) {
    buf_33556646[0].push.apply(buf_33556646[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110,58,32]);;
    buf_33556646[0].push.apply(buf_33556646[0], e_33556645.message);;
    }
    else {
    buf_33556646[0].push.apply(buf_33556646[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110]);;
    }
    buf_33556646[0].push.apply(buf_33556646[0], [32,91]);;
    add_33556369(buf_33556646, 0, e_33556645.name);
    buf_33556646[0].push.apply(buf_33556646[0], [93,10]);;
    buf_33556646[0].push.apply(buf_33556646[0], rawWriteStackTrace_33556600());;
    var cbuf_33556647 = toJSStr(buf_33556646[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_33556647);
  }
  else {
    throw cbuf_33556647;
  }
}
function raiseOverflow() {
    raiseException({message: [111,118,101,114,45,32,111,114,32,117,110,100,101,114,102,108,111,119], parent: null, m_type: NTI134217743, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33557044) {
        if (a_33557044 > 2147483647 || a_33557044 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
    raiseException({message: [118,97,108,117,101,32,111,117,116,32,111,102,32,114,97,110,103,101], parent: null, m_type: NTI134217751, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_301990090(result_301990092, result_301990092_Idx, x_301990093, start_301990094, n_301990095) {
    var Temporary1;
    var old_301990096 = (result_301990092[result_301990092_Idx]).length;
    if (result_301990092[result_301990092_Idx].length < (Temporary1 = chckRange(addInt(old_301990096, n_301990095), 0, 2147483647), Temporary1)) { for (var i = result_301990092[result_301990092_Idx].length; i < Temporary1; ++i) result_301990092[result_301990092_Idx].push(0); }
         else {result_301990092[result_301990092_Idx].length = Temporary1; };
    Label2: {
      var iHEX60gensym4_301990110 = 0;
      var i_520093806 = 0;
      Label3: {
          Label4: while (true) {
          if (!(i_520093806 < n_301990095)) break Label4;
            iHEX60gensym4_301990110 = i_520093806;
            result_301990092[result_301990092_Idx][chckIndx(addInt(old_301990096, iHEX60gensym4_301990110), 0, (result_301990092[result_301990092_Idx]).length - 1)] = x_301990093.charCodeAt(chckIndx(addInt(start_301990094, iHEX60gensym4_301990110), 0, (x_301990093).length - 1));
            i_520093806 = addInt(i_520093806, 1);
          }
      };
    };
}
function addChars_301990086(result_301990088, result_301990088_Idx, x_301990089) {
    addChars_301990090(result_301990088, result_301990088_Idx, x_301990089, 0, ((x_301990089) == null ? 0 : (x_301990089).length));
}
function addInt_301990111(result_301990112, result_301990112_Idx, x_301990113) {
    addChars_301990086(result_301990112, result_301990112_Idx, ((x_301990113) + ""));
}
function addInt_301990129(result_301990130, result_301990130_Idx, x_301990131) {
    addInt_301990111(result_301990130, result_301990130_Idx, BigInt(x_301990131));
}
function HEX24_369098760(x_369098761) {
  var result_369098762 = [[]];
    addInt_301990129(result_369098762, 0, x_369098761);
  return result_369098762[0];
}
function raiseIndexError(i_33556808, a_33556809, b_33556810) {
    var Temporary1;
    if ((b_33556810 < a_33556809)) {
    Temporary1 = [105,110,100,101,120,32,111,117,116,32,111,102,32,98,111,117,110,100,115,44,32,116,104,101,32,99,111,110,116,97,105,110,101,114,32,105,115,32,101,109,112,116,121];
    }
    else {
    Temporary1 = ([105,110,100,101,120,32] || []).concat(HEX24_369098760(i_33556808) || [],[32,110,111,116,32,105,110,32] || [],HEX24_369098760(a_33556809) || [],[32,46,46,32] || [],HEX24_369098760(b_33556810) || []);
    }
    raiseException({message: nimCopy(null, Temporary1, NTI33554449), parent: null, m_type: NTI134217749, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_520093746(s_520093750, value_520093751) {
  var result_520093752 = false;
    result_520093752 = ((s_520093750.a <= value_520093751) && (value_520093751 <= s_520093750.b));
  return result_520093752;
}
function HEX2EHEX2E_520093701(a_520093704, b_520093705) {
  var result_520093708 = ({a: 0, b: 0});
    result_520093708 = nimCopy(result_520093708, {a: a_520093704, b: b_520093705}, NTI520093706);
  return result_520093708;
}
function sysFatal_268435501(message_268435504) {
    raiseException({message: nimCopy(null, message_268435504, NTI33554449), m_type: NTI134217745, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_268435499(msg_268435500) {
    sysFatal_268435501(msg_268435500);
}
function failedAssertImpl_268435541(msg_268435542) {
    raiseAssert_268435499(msg_268435542);
}
function f_520093697(lit_520093698) {
              var Temporary5;
  var result_520093699 = [];
    Label1: {
      var b_520093700 = 0;
      var i_520093799 = 0;
      var L_520093800 = (lit_520093698).length;
      Label2: {
          Label3: while (true) {
          if (!(i_520093799 < L_520093800)) break Label3;
            b_520093700 = lit_520093698[chckIndx(i_520093799, 0, (lit_520093698).length - 1)];
            Label4: {
              if (contains_520093746(HEX2EHEX2E_520093701(48, 57), b_520093700)) {
              Temporary5 = b_520093700;
              }
              else {
              if ((b_520093700 == 95)) {
              break Label4;
              }
              else {
                raiseException({message: [69], parent: null, m_type: NTI134217746, name: null, trace: [], up: null}, "ValueError");
              }
              }
            };
            addChar(result_520093699, Temporary5);;
            i_520093799 = addInt(i_520093799, 1);
            if (!(((lit_520093698).length == L_520093800))) {
            failedAssertImpl_268435541(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-#devel/lib/system/iterators.nim(264, 11) `len(a) == L` the length of the string changed while iterating over it"));
            }
          }
      };
    };
  return result_520093699;
}
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_520093790 = f_520093697([49,95,50,95,51]);
if (!(eqStrings(s_520093790, [49,50,51]))) {
failedAssertImpl_268435541([47,104,111,109,101,47,114,117,110,110,101,114,47,119,111,114,107,47,78,105,109,47,78,105,109,47,116,101,109,112,46,110,105,109,40,56,44,32,49,41,32,96,115,32,61,61,32,34,49,50,51,34,96,32]);
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

AST

nnkStmtList.newTree(
  nnkFuncDef.newTree(
    newIdentNode("f"),
    newEmptyNode(),
    newEmptyNode(),
    nnkFormalParams.newTree(
      newIdentNode("string"),
      nnkIdentDefs.newTree(
        newIdentNode("lit"),
        newIdentNode("string"),
        newEmptyNode()
      )
    ),
    newEmptyNode(),
    newEmptyNode(),
    nnkStmtList.newTree(
      nnkForStmt.newTree(
        newIdentNode("b"),
        newIdentNode("lit"),
        nnkStmtList.newTree(
          nnkCall.newTree(
            nnkDotExpr.newTree(
              newIdentNode("result"),
              newIdentNode("add")
            ),
            nnkStmtList.newTree(
              nnkIfStmt.newTree(
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("in"),
                    newIdentNode("b"),
                    nnkInfix.newTree(
                      newIdentNode(".."),
                      newLit('0'),
                      newLit('9')
                    )
                  ),
                  nnkStmtList.newTree(
                    newIdentNode("b")
                  )
                ),
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("=="),
                    newIdentNode("b"),
                    newLit('_')
                  ),
                  nnkStmtList.newTree(
                    nnkContinueStmt.newTree(
                      newEmptyNode()
                    )
                  )
                ),
                nnkElse.newTree(
                  nnkStmtList.newTree(
                    nnkRaiseStmt.newTree(
                      nnkCall.newTree(
                        newIdentNode("newException"),
                        newIdentNode("ValueError"),
                        newLit("E")
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  ),
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      nnkCallStrLit.newTree(
        newIdentNode("f"),
        newLit("1_2_3")
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

stable :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:531
    throw new Error(cbuf_33556665);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(8, 10) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:531:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:292:5)
    at sysFatal_218103842 (/home/runner/work/Nim/Nim/temp:640:5)
    at raiseAssert_218103840 (/home/runner/work/Nim/Nim/temp:646:5)
    at failedAssertImpl_218103864 (/home/runner/work/Nim/Nim/temp:652:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:700:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp '

Stats

• Created 2023-07-10T13:43:04Z
• Started 2023-07-10T13:43:36
• Finished 2023-07-10T13:43:37
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI33555124 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555114 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555125 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554438 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI452984842 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555128 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555130 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554456 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555916 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555083 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555165 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554439 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554440 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555164 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555112 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555113 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555120 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555122 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI33555122 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555122.node = NNI33555122;
var NNI33555120 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555120.node = NNI33555120;
var NNI33555113 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555113.node = NNI33555113;
NTI33555164.base = NTI33555112;
NTI33555165.base = NTI33555112;
var NNI33555112 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555164, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554440, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554439, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554439, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555165, name: "up", sons: null}]};
NTI33555112.node = NNI33555112;
var NNI33555083 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555083.node = NNI33555083;
NTI33555112.base = NTI33555083;
NTI33555113.base = NTI33555112;
NTI33555120.base = NTI33555113;
NTI33555122.base = NTI33555120;
var NNI33555916 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554440, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554456, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554440, name: "Field2", sons: null}]};
NTI33555916.node = NNI33555916;
var NNI33555130 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555130.node = NNI33555130;
NTI33555130.base = NTI33555113;
var NNI33555128 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555128.node = NNI33555128;
NTI33555128.base = NTI33555113;
var NNI452984842 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554438, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554438, name: "b", sons: null}]};
NTI452984842.node = NNI452984842;
var NNI33555125 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555125.node = NNI33555125;
var NNI33555114 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555114.node = NNI33555114;
NTI33555114.base = NTI33555112;
NTI33555125.base = NTI33555114;
var NNI33555124 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555124.node = NNI33555124;
NTI33555124.base = NTI33555113;
function makeNimstrLit(c_33556801) {
      var result = [];
  for (var i = 0; i < c_33556801.length; ++i) {
    result[i] = c_33556801.charCodeAt(i);
  }
  return result;
}
function mnewString(len_33556893) {
        return new Array(len_33556893);
}
function arrayConstr(len_33557179, value_33557180, typ_33557181) {
        var result = new Array(len_33557179);
    for (var i = 0; i < len_33557179; ++i) result[i] = nimCopy(null, value_33557180, typ_33557181);
    return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557140, src_33557141, ti_33557142) {
  var result_33557151 = null;
    switch (ti_33557142.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(isFatPointer_33557131(ti_33557142))) {
      result_33557151 = src_33557141;
      }
      else {
        result_33557151 = [src_33557141[0], src_33557141[1]];
      }
      break;
    case 19:
            if (dest_33557140 === null || dest_33557140 === undefined) {
        dest_33557140 = {};
      }
      else {
        for (var key in dest_33557140) { delete dest_33557140[key]; }
      }
      for (var key in src_33557141) { dest_33557140[key] = src_33557141[key]; }
      result_33557151 = dest_33557140;
      break;
    case 18:
    case 17:
      if (!((ti_33557142.base == null))) {
      result_33557151 = nimCopy(dest_33557140, src_33557141, ti_33557142.base);
      }
      else {
      if ((ti_33557142.kind == 17)) {
      result_33557151 = (dest_33557140 === null || dest_33557140 === undefined) ? {m_type: ti_33557142} : dest_33557140;
      }
      else {
        result_33557151 = (dest_33557140 === null || dest_33557140 === undefined) ? {} : dest_33557140;
      }
      }
      nimCopyAux(result_33557151, src_33557141, ti_33557142.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_33557141 === null) {
        result_33557151 = null;
      }
      else {
        if (dest_33557140 === null || dest_33557140 === undefined || dest_33557140.length != src_33557141.length) {
          dest_33557140 = new Array(src_33557141.length);
        }
        result_33557151 = dest_33557140;
        for (var i = 0; i < src_33557141.length; ++i) {
          result_33557151[i] = nimCopy(result_33557151[i], src_33557141[i], ti_33557142.base);
        }
      }
      break;
    case 28:
            if (src_33557141 !== null) {
        result_33557151 = src_33557141.slice(0);
      }
      break;
    default: 
      result_33557151 = src_33557141;
      break;
    }
  return result_33557151;
}
function cstrToNimstr(c_33556804) {
      var ln = c_33556804.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_33556804.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_33556804.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_33556807) {
                    var Temporary5;
  var result_33556808 = null;
    var res_33556842 = newSeq_33556825((s_33556807).length);
    var i_33556843 = 0;
    var j_33556844 = 0;
    Label1: do {
        Label2: while (true) {
        if (!(i_33556843 < (s_33556807).length)) break Label2;
          var c_33556845 = s_33556807[i_33556843];
          if ((c_33556845 < 128)) {
          res_33556842[j_33556844] = String.fromCharCode(c_33556845);
          i_33556843 += 1;
          }
          else {
            var helper_33556857 = newSeq_33556825(0);
            Label3: do {
                Label4: while (true) {
                if (!true) break Label4;
                  var code_33556858 = c_33556845.toString(16);
                  if ((((code_33556858) == null ? 0 : (code_33556858).length) == 1)) {
                  helper_33556857.push("%0");;
                  }
                  else {
                  helper_33556857.push("%");;
                  }
                  helper_33556857.push(code_33556858);;
                  i_33556843 += 1;
                    if (((s_33556807).length <= i_33556843)) Temporary5 = true; else {                      Temporary5 = (s_33556807[i_33556843] < 128);                    }                  if (Temporary5) {
                  break Label3;
                  }
                  c_33556845 = s_33556807[i_33556843];
                }
            } while (false);
++excHandler;
            try {
            res_33556842[j_33556844] = decodeURIComponent(helper_33556857.join(""));
--excHandler;
} catch (EXCEPTION) {
 var prevJSError = lastJSError;
 lastJSError = EXCEPTION;
 --excHandler;
            res_33556842[j_33556844] = helper_33556857.join("");
            lastJSError = prevJSError;
            } finally {
            }
          }
          j_33556844 += 1;
        }
    } while (false);
    if (res_33556842.length < j_33556844) { for (var i = res_33556842.length ; i < j_33556844 ; ++i) res_33556842.push(null); }
               else { res_33556842.length = j_33556844; };
    result_33556808 = res_33556842.join("");
  return result_33556808;
}
function raiseException(e_33556667, ename_33556668) {
    e_33556667.name = ename_33556668;
    if ((excHandler == 0)) {
    unhandledException(e_33556667);
    }
    e_33556667.trace = nimCopy(null, rawWriteStackTrace_33556631(), NTI33554439);
    throw e_33556667;
}
function addInt(a_33556940, b_33556941) {
        var result = a_33556940 + b_33556941;
    checkOverflowInt(result);
    return result;
}
function chckRange(i_33557189, a_33557190, b_33557191) {
      var Temporary1;
  var result_33557192 = 0;
  BeforeRet: do {
      if (!(a_33557190 <= i_33557189)) Temporary1 = false; else {        Temporary1 = (i_33557189 <= b_33557191);      }    if (Temporary1) {
    result_33557192 = i_33557189;
    break BeforeRet;
    }
    else {
    raiseRangeError();
    }
  } while (false);
  return result_33557192;
}
function chckIndx(i_33557184, a_33557185, b_33557186) {
      var Temporary1;
  var result_33557187 = 0;
  BeforeRet: do {
      if (!(a_33557185 <= i_33557184)) Temporary1 = false; else {        Temporary1 = (i_33557184 <= b_33557186);      }    if (Temporary1) {
    result_33557187 = i_33557184;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_33557184, a_33557185, b_33557186);
    }
  } while (false);
  return result_33557187;
}
function addChar(x_33557255, c_33557256) {
    x_33557255.push(c_33557256);
}
function eqStrings(a_33556931, b_33556932) {
        if (a_33556931 == b_33556932) return true;
    if (a_33556931 === null && b_33556932.length == 0) return true;
    if (b_33556932 === null && a_33556931.length == 0) return true;
    if ((!a_33556931) || (!b_33556932)) return false;
    var alen = a_33556931.length;
    if (alen != b_33556932.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_33556931[i] != b_33556932[i]) return false;
    return true;
}
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;
function add_33556419(x_33556420, x_33556420_Idx, y_33556421) {
          if (x_33556420[x_33556420_Idx] === null) { x_33556420[x_33556420_Idx] = []; }
      var off = x_33556420[x_33556420_Idx].length;
      x_33556420[x_33556420_Idx].length += y_33556421.length;
      for (var i = 0; i < y_33556421.length; ++i) {
        x_33556420[x_33556420_Idx][off+i] = y_33556421.charCodeAt(i);
      }
}
function isFatPointer_33557131(ti_33557132) {
  var result_33557133 = false;
  BeforeRet: do {
    result_33557133 = !((ConstSet1[ti_33557132.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_33557133;
}
function nimCopyAux(dest_33557144, src_33557145, n_33557146) {
    switch (n_33557146.kind) {
    case 0:
      break;
    case 1:
            dest_33557144[n_33557146.offset] = nimCopy(dest_33557144[n_33557146.offset], src_33557145[n_33557146.offset], n_33557146.typ);
      break;
    case 2:
          for (var i = 0; i < n_33557146.sons.length; i++) {
      nimCopyAux(dest_33557144, src_33557145, n_33557146.sons[i]);
    }
      break;
    case 3:
            dest_33557144[n_33557146.offset] = nimCopy(dest_33557144[n_33557146.offset], src_33557145[n_33557146.offset], n_33557146.typ);
      for (var i = 0; i < n_33557146.sons.length; ++i) {
        nimCopyAux(dest_33557144, src_33557145, n_33557146.sons[i][1]);
      }
      break;
    }
}
function auxWriteStackTrace_33556559(f_33556560) {
          var Temporary3;
  var result_33556561 = [[]];
    var it_33556569 = f_33556560;
    var i_33556570 = 0;
    var total_33556571 = 0;
    var tempFrames_33556572 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555916);
    Label1: do {
        Label2: while (true) {
          if (!!((it_33556569 == null))) Temporary3 = false; else {            Temporary3 = (i_33556570 <= 63);          }        if (!Temporary3) break Label2;
          tempFrames_33556572[i_33556570].Field0 = it_33556569.procname;
          tempFrames_33556572[i_33556570].Field1 = it_33556569.line;
          tempFrames_33556572[i_33556570].Field2 = it_33556569.filename;
          i_33556570 += 1;
          total_33556571 += 1;
          it_33556569 = it_33556569.prev;
        }
    } while (false);
    Label4: do {
        Label5: while (true) {
        if (!!((it_33556569 == null))) break Label5;
          total_33556571 += 1;
          it_33556569 = it_33556569.prev;
        }
    } while (false);
    result_33556561[0] = nimCopy(null, [], NTI33554439);
    if (!((total_33556571 == i_33556570))) {
    result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("("));;
    result_33556561[0].push.apply(result_33556561[0], HEX24_335544323((total_33556571 - i_33556570)));;
    result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(" calls omitted) ...\x0A"));;
    }
    Label6: do {
      var j_33556602 = 0;
      var colontmp__452984914 = 0;
      colontmp__452984914 = (i_33556570 - 1);
      var res_452984916 = colontmp__452984914;
      Label7: do {
          Label8: while (true) {
          if (!(0 <= res_452984916)) break Label8;
            j_33556602 = res_452984916;
            result_33556561[0].push.apply(result_33556561[0], cstrToNimstr(tempFrames_33556572[j_33556602].Field2));;
            if ((0 < tempFrames_33556572[j_33556602].Field1)) {
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("("));;
            addInt_251658457(result_33556561, 0, tempFrames_33556572[j_33556602].Field1);
            if (false) {
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(", "));;
            addInt_251658457(result_33556561, 0, 0);
            }
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(")"));;
            }
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(" at "));;
            add_33556419(result_33556561, 0, tempFrames_33556572[j_33556602].Field0);
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("\x0A"));;
            res_452984916 -= 1;
          }
      } while (false);
    } while (false);
  return result_33556561[0];
}
function rawWriteStackTrace_33556631() {
  var result_33556632 = [];
    if (!((framePtr == null))) {
    result_33556632 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(auxWriteStackTrace_33556559(framePtr) || []), NTI33554439);
    }
    else {
      result_33556632 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI33554439);
    }
  return result_33556632;
}
function newSeq_33556825(len_33556827) {
  var result_33556828 = [];
    result_33556828 = new Array(len_33556827); for (var i = 0 ; i < len_33556827 ; ++i) { result_33556828[i] = null; }
  return result_33556828;
}
function unhandledException(e_33556663) {
    var buf_33556664 = [[]];
    if (!(((e_33556663.message).length == 0))) {
    buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("Error: unhandled exception: "));;
    buf_33556664[0].push.apply(buf_33556664[0], e_33556663.message);;
    }
    else {
    buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("Error: unhandled exception"));;
    }
    buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit(" ["));;
    add_33556419(buf_33556664, 0, e_33556663.name);
    buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("]\x0A"));;
    buf_33556664[0].push.apply(buf_33556664[0], rawWriteStackTrace_33556631());;
    var cbuf_33556665 = toJSStr(buf_33556664[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_33556665);
  }
  else {
    throw cbuf_33556665;
  }
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI33555122, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33556938) {
        if (a_33556938 > 2147483647 || a_33556938 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
    raiseException({message: makeNimstrLit("value out of range"), parent: null, m_type: NTI33555130, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_251658415(result_251658417, result_251658417_Idx, x_251658418, start_251658419, n_251658420) {
    var old_251658421 = (result_251658417[result_251658417_Idx]).length;
    (result_251658417[result_251658417_Idx].length = chckRange(addInt(old_251658421, n_251658420), 0, 2147483647));
    Label1: do {
      var iHEX60gensym4_251658435 = 0;
      var i_452984909 = 0;
      Label2: do {
          Label3: while (true) {
          if (!(i_452984909 < n_251658420)) break Label3;
            iHEX60gensym4_251658435 = i_452984909;
            result_251658417[result_251658417_Idx][chckIndx(addInt(old_251658421, iHEX60gensym4_251658435), 0, (result_251658417[result_251658417_Idx]).length - 1)] = x_251658418.charCodeAt(chckIndx(addInt(start_251658419, iHEX60gensym4_251658435), 0, (x_251658418).length - 1));
            i_452984909 = addInt(i_452984909, 1);
          }
      } while (false);
    } while (false);
}
function addChars_251658411(result_251658413, result_251658413_Idx, x_251658414) {
    addChars_251658415(result_251658413, result_251658413_Idx, x_251658414, 0, ((x_251658414) == null ? 0 : (x_251658414).length));
}
function addInt_251658436(result_251658437, result_251658437_Idx, x_251658438) {
    addChars_251658411(result_251658437, result_251658437_Idx, ((x_251658438) + ""));
}
function addInt_251658457(result_251658458, result_251658458_Idx, x_251658459) {
    addInt_251658436(result_251658458, result_251658458_Idx, x_251658459);
}
function HEX24_335544323(x_335544324) {
  var result_335544325 = [[]];
    addInt_251658457(result_335544325, 0, x_335544324);
  return result_335544325[0];
}
function raiseIndexError(i_33556754, a_33556755, b_33556756) {
    var Temporary1;
    if ((b_33556756 < a_33556755)) {
    Temporary1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Temporary1 = (makeNimstrLit("index ") || []).concat(HEX24_335544323(i_33556754) || [],makeNimstrLit(" not in ") || [],HEX24_335544323(a_33556755) || [],makeNimstrLit(" .. ") || [],HEX24_335544323(b_33556756) || []);
    }
    raiseException({message: nimCopy(null, Temporary1, NTI33554439), parent: null, m_type: NTI33555128, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_452984867(s_452984871, value_452984872) {
  var result_452984873 = false;
    result_452984873 = ((s_452984871.a <= value_452984872) && (value_452984872 <= s_452984871.b));
  return result_452984873;
}
function HEX2EHEX2E_452984837(a_452984840, b_452984841) {
  var result_452984844 = ({a: 0, b: 0});
    result_452984844 = nimCopy(result_452984844, {a: a_452984840, b: b_452984841}, NTI452984842);
  return result_452984844;
}
function sysFatal_218103842(message_218103845) {
    raiseException({message: nimCopy(null, message_218103845, NTI33554439), m_type: NTI33555124, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_218103840(msg_218103841) {
    sysFatal_218103842(msg_218103841);
}
function failedAssertImpl_218103864(msg_218103865) {
    raiseAssert_218103840(msg_218103865);
}
function f_452984833(lit_452984834) {
              var Temporary5;
  var result_452984835 = [];
    Label1: do {
      var b_452984836 = 0;
      var i_452984902 = 0;
      var L_452984903 = (lit_452984834).length;
      Label2: do {
          Label3: while (true) {
          if (!(i_452984902 < L_452984903)) break Label3;
            b_452984836 = lit_452984834[chckIndx(i_452984902, 0, (lit_452984834).length - 1)];
            Label4: do {
              if (contains_452984867(HEX2EHEX2E_452984837(48, 57), b_452984836)) {
              Temporary5 = b_452984836;
              }
              else {
              if ((b_452984836 == 95)) {
              break Label4;
              }
              else {
                raiseException({message: makeNimstrLit("E"), parent: null, m_type: NTI33555125, name: null, trace: [], up: null}, "ValueError");
              }
              }
            } while (false);
            addChar(result_452984835, Temporary5);;
            i_452984902 = addInt(i_452984902, 1);
            if (!(((lit_452984834).length == L_452984903))) {
            failedAssertImpl_218103864(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.6.14/lib/system/iterators.nim(258, 11) `len(a) == L` the length of the string changed while iterating over it"));
            }
          }
      } while (false);
    } while (false);
  return result_452984835;
}
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_452984893 = f_452984833(makeNimstrLit("1_2_3"));
if (!(eqStrings(s_452984893, makeNimstrLit("123")))) {
failedAssertImpl_218103864(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(8, 10) `s == \"123\"` "));
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

AST

nnkStmtList.newTree(
  nnkFuncDef.newTree(
    newIdentNode("f"),
    newEmptyNode(),
    newEmptyNode(),
    nnkFormalParams.newTree(
      newIdentNode("string"),
      nnkIdentDefs.newTree(
        newIdentNode("lit"),
        newIdentNode("string"),
        newEmptyNode()
      )
    ),
    newEmptyNode(),
    newEmptyNode(),
    nnkStmtList.newTree(
      nnkForStmt.newTree(
        newIdentNode("b"),
        newIdentNode("lit"),
        nnkStmtList.newTree(
          nnkCall.newTree(
            nnkDotExpr.newTree(
              newIdentNode("result"),
              newIdentNode("add")
            ),
            nnkStmtList.newTree(
              nnkIfStmt.newTree(
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("in"),
                    newIdentNode("b"),
                    nnkInfix.newTree(
                      newIdentNode(".."),
                      newLit('0'),
                      newLit('9')
                    )
                  ),
                  nnkStmtList.newTree(
                    newIdentNode("b")
                  )
                ),
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("=="),
                    newIdentNode("b"),
                    newLit('_')
                  ),
                  nnkStmtList.newTree(
                    nnkContinueStmt.newTree(
                      newEmptyNode()
                    )
                  )
                ),
                nnkElse.newTree(
                  nnkStmtList.newTree(
                    nnkRaiseStmt.newTree(
                      nnkCall.newTree(
                        newIdentNode("newException"),
                        newIdentNode("ValueError"),
                        newLit("E")
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  ),
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      nnkCallStrLit.newTree(
        newIdentNode("f"),
        newLit("1_2_3")
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.6.0 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:535
    throw new Error(cbuf_33556666);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(8, 10) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:535:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:296:5)
    at sysFatal_218103842 (/home/runner/work/Nim/Nim/temp:644:5)
    at raiseAssert_218103840 (/home/runner/work/Nim/Nim/temp:650:5)
    at failedAssertImpl_218103864 (/home/runner/work/Nim/Nim/temp:656:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:704:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp '

Stats

• Created 2023-07-10T13:43:04Z
• Started 2023-07-10T13:43:39
• Finished 2023-07-10T13:43:39
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI33555124 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555114 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555125 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554438 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI436207626 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555128 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555130 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554456 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555919 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555083 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555165 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554439 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554440 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555164 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555112 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555113 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555120 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555122 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI33555122 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555122.node = NNI33555122;
var NNI33555120 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555120.node = NNI33555120;
var NNI33555113 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555113.node = NNI33555113;
NTI33555164.base = NTI33555112;
NTI33555165.base = NTI33555112;
var NNI33555112 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555164, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554440, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554439, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554439, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555165, name: "up", sons: null}]};
NTI33555112.node = NNI33555112;
var NNI33555083 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555083.node = NNI33555083;
NTI33555112.base = NTI33555083;
NTI33555113.base = NTI33555112;
NTI33555120.base = NTI33555113;
NTI33555122.base = NTI33555120;
var NNI33555919 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554440, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554456, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554440, name: "Field2", sons: null}]};
NTI33555919.node = NNI33555919;
var NNI33555130 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555130.node = NNI33555130;
NTI33555130.base = NTI33555113;
var NNI33555128 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555128.node = NNI33555128;
NTI33555128.base = NTI33555113;
var NNI436207626 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554438, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554438, name: "b", sons: null}]};
NTI436207626.node = NNI436207626;
var NNI33555125 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555125.node = NNI33555125;
var NNI33555114 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555114.node = NNI33555114;
NTI33555114.base = NTI33555112;
NTI33555125.base = NTI33555114;
var NNI33555124 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555124.node = NNI33555124;
NTI33555124.base = NTI33555113;
function makeNimstrLit(c_33556802) {
      var result = [];
  for (var i = 0; i < c_33556802.length; ++i) {
    result[i] = c_33556802.charCodeAt(i);
  }
  return result;
}
function mnewString(len_33556894) {
        return new Array(len_33556894);
}
function arrayConstr(len_33557180, value_33557181, typ_33557182) {
        var result = new Array(len_33557180);
    for (var i = 0; i < len_33557180; ++i) result[i] = nimCopy(null, value_33557181, typ_33557182);
    return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557141, src_33557142, ti_33557143) {
  var result_33557152 = null;
    switch (ti_33557143.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(isFatPointer_33557132(ti_33557143))) {
      result_33557152 = src_33557142;
      }
      else {
        result_33557152 = [src_33557142[0], src_33557142[1]];
      }
      break;
    case 19:
            if (dest_33557141 === null || dest_33557141 === undefined) {
        dest_33557141 = {};
      }
      else {
        for (var key in dest_33557141) { delete dest_33557141[key]; }
      }
      for (var key in src_33557142) { dest_33557141[key] = src_33557142[key]; }
      result_33557152 = dest_33557141;
      break;
    case 18:
    case 17:
      if (!((ti_33557143.base == null))) {
      result_33557152 = nimCopy(dest_33557141, src_33557142, ti_33557143.base);
      }
      else {
      if ((ti_33557143.kind == 17)) {
      result_33557152 = (dest_33557141 === null || dest_33557141 === undefined) ? {m_type: ti_33557143} : dest_33557141;
      }
      else {
        result_33557152 = (dest_33557141 === null || dest_33557141 === undefined) ? {} : dest_33557141;
      }
      }
      nimCopyAux(result_33557152, src_33557142, ti_33557143.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_33557142 === null) {
        result_33557152 = null;
      }
      else {
        if (dest_33557141 === null || dest_33557141 === undefined || dest_33557141.length != src_33557142.length) {
          dest_33557141 = new Array(src_33557142.length);
        }
        result_33557152 = dest_33557141;
        for (var i = 0; i < src_33557142.length; ++i) {
          result_33557152[i] = nimCopy(result_33557152[i], src_33557142[i], ti_33557143.base);
        }
      }
      break;
    case 28:
            if (src_33557142 !== null) {
        result_33557152 = src_33557142.slice(0);
      }
      break;
    default: 
      result_33557152 = src_33557142;
      break;
    }
  return result_33557152;
}
function cstrToNimstr(c_33556805) {
      var ln = c_33556805.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_33556805.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_33556805.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_33556808) {
                    var Temporary5;
            var Temporary7;
  var result_33556809 = null;
    var res_33556843 = newSeq_33556826((s_33556808).length);
    var i_33556844 = 0;
    var j_33556845 = 0;
    Label1: do {
        Label2: while (true) {
        if (!(i_33556844 < (s_33556808).length)) break Label2;
          var c_33556846 = s_33556808[i_33556844];
          if ((c_33556846 < 128)) {
          res_33556843[j_33556845] = String.fromCharCode(c_33556846);
          i_33556844 += 1;
          }
          else {
            var helper_33556858 = newSeq_33556826(0);
            Label3: do {
                Label4: while (true) {
                if (!true) break Label4;
                  var code_33556859 = c_33556846.toString(16);
                  if ((((code_33556859) == null ? 0 : (code_33556859).length) == 1)) {
                  helper_33556858.push("%0");;
                  }
                  else {
                  helper_33556858.push("%");;
                  }
                  helper_33556858.push(code_33556859);;
                  i_33556844 += 1;
                    if (((s_33556808).length <= i_33556844)) Temporary5 = true; else {                      Temporary5 = (s_33556808[i_33556844] < 128);                    }                  if (Temporary5) {
                  break Label3;
                  }
                  c_33556846 = s_33556808[i_33556844];
                }
            } while (false);
++excHandler;
            Temporary7 = framePtr;
            try {
            res_33556843[j_33556845] = decodeURIComponent(helper_33556858.join(""));
--excHandler;
} catch (EXCEPTION) {
 var prevJSError = lastJSError;
 lastJSError = EXCEPTION;
 --excHandler;
            framePtr = Temporary7;
            res_33556843[j_33556845] = helper_33556858.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Temporary7;
            }
          }
          j_33556845 += 1;
        }
    } while (false);
    if (res_33556843.length < j_33556845) { for (var i = res_33556843.length ; i < j_33556845 ; ++i) res_33556843.push(null); }
               else { res_33556843.length = j_33556845; };
    result_33556809 = res_33556843.join("");
  return result_33556809;
}
function raiseException(e_33556668, ename_33556669) {
    e_33556668.name = ename_33556669;
    if ((excHandler == 0)) {
    unhandledException(e_33556668);
    }
    e_33556668.trace = nimCopy(null, rawWriteStackTrace_33556632(), NTI33554439);
    throw e_33556668;
}
function addInt(a_33556941, b_33556942) {
        var result = a_33556941 + b_33556942;
    checkOverflowInt(result);
    return result;
}
function chckRange(i_33557190, a_33557191, b_33557192) {
      var Temporary1;
  var result_33557193 = 0;
  BeforeRet: do {
      if (!(a_33557191 <= i_33557190)) Temporary1 = false; else {        Temporary1 = (i_33557190 <= b_33557192);      }    if (Temporary1) {
    result_33557193 = i_33557190;
    break BeforeRet;
    }
    else {
    raiseRangeError();
    }
  } while (false);
  return result_33557193;
}
function chckIndx(i_33557185, a_33557186, b_33557187) {
      var Temporary1;
  var result_33557188 = 0;
  BeforeRet: do {
      if (!(a_33557186 <= i_33557185)) Temporary1 = false; else {        Temporary1 = (i_33557185 <= b_33557187);      }    if (Temporary1) {
    result_33557188 = i_33557185;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_33557185, a_33557186, b_33557187);
    }
  } while (false);
  return result_33557188;
}
function addChar(x_33557256, c_33557257) {
    x_33557256.push(c_33557257);
}
function eqStrings(a_33556932, b_33556933) {
        if (a_33556932 == b_33556933) return true;
    if (a_33556932 === null && b_33556933.length == 0) return true;
    if (b_33556933 === null && a_33556932.length == 0) return true;
    if ((!a_33556932) || (!b_33556933)) return false;
    var alen = a_33556932.length;
    if (alen != b_33556933.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_33556932[i] != b_33556933[i]) return false;
    return true;
}
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;
function add_33556420(x_33556421, x_33556421_Idx, y_33556422) {
          if (x_33556421[x_33556421_Idx] === null) { x_33556421[x_33556421_Idx] = []; }
      var off = x_33556421[x_33556421_Idx].length;
      x_33556421[x_33556421_Idx].length += y_33556422.length;
      for (var i = 0; i < y_33556422.length; ++i) {
        x_33556421[x_33556421_Idx][off+i] = y_33556422.charCodeAt(i);
      }
}
function isFatPointer_33557132(ti_33557133) {
  var result_33557134 = false;
  BeforeRet: do {
    result_33557134 = !((ConstSet1[ti_33557133.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_33557134;
}
function nimCopyAux(dest_33557145, src_33557146, n_33557147) {
    switch (n_33557147.kind) {
    case 0:
      break;
    case 1:
            dest_33557145[n_33557147.offset] = nimCopy(dest_33557145[n_33557147.offset], src_33557146[n_33557147.offset], n_33557147.typ);
      break;
    case 2:
          for (var i = 0; i < n_33557147.sons.length; i++) {
      nimCopyAux(dest_33557145, src_33557146, n_33557147.sons[i]);
    }
      break;
    case 3:
            dest_33557145[n_33557147.offset] = nimCopy(dest_33557145[n_33557147.offset], src_33557146[n_33557147.offset], n_33557147.typ);
      for (var i = 0; i < n_33557147.sons.length; ++i) {
        nimCopyAux(dest_33557145, src_33557146, n_33557147.sons[i][1]);
      }
      break;
    }
}
function auxWriteStackTrace_33556560(f_33556561) {
          var Temporary3;
  var result_33556562 = [[]];
    var it_33556570 = f_33556561;
    var i_33556571 = 0;
    var total_33556572 = 0;
    var tempFrames_33556573 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555919);
    Label1: do {
        Label2: while (true) {
          if (!!((it_33556570 == null))) Temporary3 = false; else {            Temporary3 = (i_33556571 <= 63);          }        if (!Temporary3) break Label2;
          tempFrames_33556573[i_33556571].Field0 = it_33556570.procname;
          tempFrames_33556573[i_33556571].Field1 = it_33556570.line;
          tempFrames_33556573[i_33556571].Field2 = it_33556570.filename;
          i_33556571 += 1;
          total_33556572 += 1;
          it_33556570 = it_33556570.prev;
        }
    } while (false);
    Label4: do {
        Label5: while (true) {
        if (!!((it_33556570 == null))) break Label5;
          total_33556572 += 1;
          it_33556570 = it_33556570.prev;
        }
    } while (false);
    result_33556562[0] = nimCopy(null, [], NTI33554439);
    if (!((total_33556572 == i_33556571))) {
    result_33556562[0].push.apply(result_33556562[0], makeNimstrLit("("));;
    result_33556562[0].push.apply(result_33556562[0], HEX24_318767107((total_33556572 - i_33556571)));;
    result_33556562[0].push.apply(result_33556562[0], makeNimstrLit(" calls omitted) ...\x0A"));;
    }
    Label6: do {
      var j_33556603 = 0;
      var colontmp__436207698 = 0;
      colontmp__436207698 = (i_33556571 - 1);
      var res_436207700 = colontmp__436207698;
      Label7: do {
          Label8: while (true) {
          if (!(0 <= res_436207700)) break Label8;
            j_33556603 = res_436207700;
            result_33556562[0].push.apply(result_33556562[0], cstrToNimstr(tempFrames_33556573[j_33556603].Field2));;
            if ((0 < tempFrames_33556573[j_33556603].Field1)) {
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit("("));;
            addInt_251658457(result_33556562, 0, tempFrames_33556573[j_33556603].Field1);
            if (false) {
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit(", "));;
            addInt_251658457(result_33556562, 0, 0);
            }
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit(")"));;
            }
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit(" at "));;
            add_33556420(result_33556562, 0, tempFrames_33556573[j_33556603].Field0);
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit("\x0A"));;
            res_436207700 -= 1;
          }
      } while (false);
    } while (false);
  return result_33556562[0];
}
function rawWriteStackTrace_33556632() {
  var result_33556633 = [];
    if (!((framePtr == null))) {
    result_33556633 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(auxWriteStackTrace_33556560(framePtr) || []), NTI33554439);
    }
    else {
      result_33556633 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI33554439);
    }
  return result_33556633;
}
function newSeq_33556826(len_33556828) {
  var result_33556829 = [];
    result_33556829 = new Array(len_33556828); for (var i = 0 ; i < len_33556828 ; ++i) { result_33556829[i] = null; }
  return result_33556829;
}
function unhandledException(e_33556664) {
    var buf_33556665 = [[]];
    if (!(((e_33556664.message).length == 0))) {
    buf_33556665[0].push.apply(buf_33556665[0], makeNimstrLit("Error: unhandled exception: "));;
    buf_33556665[0].push.apply(buf_33556665[0], e_33556664.message);;
    }
    else {
    buf_33556665[0].push.apply(buf_33556665[0], makeNimstrLit("Error: unhandled exception"));;
    }
    buf_33556665[0].push.apply(buf_33556665[0], makeNimstrLit(" ["));;
    add_33556420(buf_33556665, 0, e_33556664.name);
    buf_33556665[0].push.apply(buf_33556665[0], makeNimstrLit("]\x0A"));;
    buf_33556665[0].push.apply(buf_33556665[0], rawWriteStackTrace_33556632());;
    var cbuf_33556666 = toJSStr(buf_33556665[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_33556666);
  }
  else {
    throw cbuf_33556666;
  }
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI33555122, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33556939) {
        if (a_33556939 > 2147483647 || a_33556939 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
    raiseException({message: makeNimstrLit("value out of range"), parent: null, m_type: NTI33555130, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_251658415(result_251658417, result_251658417_Idx, x_251658418, start_251658419, n_251658420) {
    var old_251658421 = (result_251658417[result_251658417_Idx]).length;
    (result_251658417[result_251658417_Idx].length = chckRange(addInt(old_251658421, n_251658420), 0, 2147483647));
    Label1: do {
      var iHEX60gensym4_251658435 = 0;
      var i_436207693 = 0;
      Label2: do {
          Label3: while (true) {
          if (!(i_436207693 < n_251658420)) break Label3;
            iHEX60gensym4_251658435 = i_436207693;
            result_251658417[result_251658417_Idx][chckIndx(addInt(old_251658421, iHEX60gensym4_251658435), 0, (result_251658417[result_251658417_Idx]).length - 1)] = x_251658418.charCodeAt(chckIndx(addInt(start_251658419, iHEX60gensym4_251658435), 0, (x_251658418).length - 1));
            i_436207693 = addInt(i_436207693, 1);
          }
      } while (false);
    } while (false);
}
function addChars_251658411(result_251658413, result_251658413_Idx, x_251658414) {
    addChars_251658415(result_251658413, result_251658413_Idx, x_251658414, 0, ((x_251658414) == null ? 0 : (x_251658414).length));
}
function addInt_251658436(result_251658437, result_251658437_Idx, x_251658438) {
    addChars_251658411(result_251658437, result_251658437_Idx, ((x_251658438) + ""));
}
function addInt_251658457(result_251658458, result_251658458_Idx, x_251658459) {
    addInt_251658436(result_251658458, result_251658458_Idx, x_251658459);
}
function HEX24_318767107(x_318767108) {
  var result_318767109 = [[]];
    addInt_251658457(result_318767109, 0, x_318767108);
  return result_318767109[0];
}
function raiseIndexError(i_33556755, a_33556756, b_33556757) {
    var Temporary1;
    if ((b_33556757 < a_33556756)) {
    Temporary1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Temporary1 = (makeNimstrLit("index ") || []).concat(HEX24_318767107(i_33556755) || [],makeNimstrLit(" not in ") || [],HEX24_318767107(a_33556756) || [],makeNimstrLit(" .. ") || [],HEX24_318767107(b_33556757) || []);
    }
    raiseException({message: nimCopy(null, Temporary1, NTI33554439), parent: null, m_type: NTI33555128, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_436207651(s_436207655, value_436207656) {
  var result_436207657 = false;
    result_436207657 = ((s_436207655.a <= value_436207656) && (value_436207656 <= s_436207655.b));
  return result_436207657;
}
function HEX2EHEX2E_436207621(a_436207624, b_436207625) {
  var result_436207628 = ({a: 0, b: 0});
    result_436207628 = nimCopy(result_436207628, {a: a_436207624, b: b_436207625}, NTI436207626);
  return result_436207628;
}
function sysFatal_218103842(message_218103845) {
    raiseException({message: nimCopy(null, message_218103845, NTI33554439), m_type: NTI33555124, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_218103840(msg_218103841) {
    sysFatal_218103842(msg_218103841);
}
function failedAssertImpl_218103864(msg_218103865) {
    raiseAssert_218103840(msg_218103865);
}
function f_436207617(lit_436207618) {
              var Temporary5;
  var result_436207619 = [];
    Label1: do {
      var b_436207620 = 0;
      var i_436207686 = 0;
      var L_436207687 = (lit_436207618).length;
      Label2: do {
          Label3: while (true) {
          if (!(i_436207686 < L_436207687)) break Label3;
            b_436207620 = lit_436207618[chckIndx(i_436207686, 0, (lit_436207618).length - 1)];
            Label4: do {
              if (contains_436207651(HEX2EHEX2E_436207621(48, 57), b_436207620)) {
              Temporary5 = b_436207620;
              }
              else {
              if ((b_436207620 == 95)) {
              break Label4;
              }
              else {
                raiseException({message: makeNimstrLit("E"), parent: null, m_type: NTI33555125, name: null, trace: [], up: null}, "ValueError");
              }
              }
            } while (false);
            addChar(result_436207619, Temporary5);;
            i_436207686 = addInt(i_436207686, 1);
            if (!(((lit_436207618).length == L_436207687))) {
            failedAssertImpl_218103864(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.6.0/lib/system/iterators.nim(258, 11) `len(a) == L` the length of the string changed while iterating over it"));
            }
          }
      } while (false);
    } while (false);
  return result_436207619;
}
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_436207677 = f_436207617(makeNimstrLit("1_2_3"));
if (!(eqStrings(s_436207677, makeNimstrLit("123")))) {
failedAssertImpl_218103864(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(8, 10) `s == \"123\"` "));
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

AST

nnkStmtList.newTree(
  nnkFuncDef.newTree(
    newIdentNode("f"),
    newEmptyNode(),
    newEmptyNode(),
    nnkFormalParams.newTree(
      newIdentNode("string"),
      nnkIdentDefs.newTree(
        newIdentNode("lit"),
        newIdentNode("string"),
        newEmptyNode()
      )
    ),
    newEmptyNode(),
    newEmptyNode(),
    nnkStmtList.newTree(
      nnkForStmt.newTree(
        newIdentNode("b"),
        newIdentNode("lit"),
        nnkStmtList.newTree(
          nnkCall.newTree(
            nnkDotExpr.newTree(
              newIdentNode("result"),
              newIdentNode("add")
            ),
            nnkStmtList.newTree(
              nnkIfStmt.newTree(
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("in"),
                    newIdentNode("b"),
                    nnkInfix.newTree(
                      newIdentNode(".."),
                      newLit('0'),
                      newLit('9')
                    )
                  ),
                  nnkStmtList.newTree(
                    newIdentNode("b")
                  )
                ),
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("=="),
                    newIdentNode("b"),
                    newLit('_')
                  ),
                  nnkStmtList.newTree(
                    nnkContinueStmt.newTree(
                      newEmptyNode()
                    )
                  )
                ),
                nnkElse.newTree(
                  nnkStmtList.newTree(
                    nnkRaiseStmt.newTree(
                      nnkCall.newTree(
                        newIdentNode("newException"),
                        newIdentNode("ValueError"),
                        newLit("E")
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  ),
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      nnkCallStrLit.newTree(
        newIdentNode("f"),
        newLit("1_2_3")
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.4.0 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:502
    throw new Error(cbuf_1420201);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(8, 10) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:502:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:290:5)
    at sysFatal_1305418 (/home/runner/work/Nim/Nim/temp:553:5)
    at raiseAssert_1305414 (/home/runner/work/Nim/Nim/temp:558:5)
    at failedAssertImpl_1305480 (/home/runner/work/Nim/Nim/temp:563:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:610:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node /home/runner/work/Nim/Nim/temp '

Stats

• Created 2023-07-10T13:43:04Z
• Started 2023-07-10T13:43:42
• Finished 2023-07-10T13:43:42
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI1194641 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194633 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194637 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194621 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194643 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1188011 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI1855011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI1188044 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI1380043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI1194408 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194728 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI1188015 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI1194723 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI1194617 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194619 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194649 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1188013 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NNI1194649 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194649.node = NNI1194649;
var NNI1194619 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194619.node = NNI1194619;
NTI1194723.base = NTI1194617;
NTI1194728.base = NTI1194617;
var NNI1194617 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI1194723, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI1188015, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI1188013, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI1188013, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI1194728, name: "up", sons: null}]};
NTI1194617.node = NNI1194617;
var NNI1194408 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194408.node = NNI1194408;
NTI1194617.base = NTI1194408;
NTI1194619.base = NTI1194617;
NTI1194649.base = NTI1194619;
var NNI1380043 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI1188015, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI1188044, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI1188015, name: "Field2", sons: null}]};
NTI1380043.node = NNI1380043;
var NNI1855011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI1188011, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI1188011, name: "b", sons: null}]};
NTI1855011.node = NNI1855011;
var NNI1194643 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194643.node = NNI1194643;
var NNI1194621 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194621.node = NNI1194621;
NTI1194621.base = NTI1194617;
NTI1194643.base = NTI1194621;
var NNI1194637 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194637.node = NNI1194637;
var NNI1194633 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194633.node = NNI1194633;
NTI1194633.base = NTI1194619;
NTI1194637.base = NTI1194633;
var NNI1194641 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194641.node = NNI1194641;
NTI1194641.base = NTI1194619;
function makeNimstrLit(c_1455062) {
      var ln = c_1455062.length;
  var result = new Array(ln);
  for (var i = 0; i < ln; ++i) {
    result[i] = c_1455062.charCodeAt(i);
  }
  return result;
}
function cstrToNimstr(c_1455079) {
      var ln = c_1455079.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_1455079.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_1455079.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_1470023, src_1470024, ti_1470025) {
  var result_1475219 = null;
    switch (ti_1470025.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(isFatPointer_1465401(ti_1470025))) {
      result_1475219 = src_1470024;
      }
      else {
        result_1475219 = [src_1470024[0], src_1470024[1]];
      }
      break;
    case 19:
            if (dest_1470023 === null || dest_1470023 === undefined) {
        dest_1470023 = {};
      }
      else {
        for (var key in dest_1470023) { delete dest_1470023[key]; }
      }
      for (var key in src_1470024) { dest_1470023[key] = src_1470024[key]; }
      result_1475219 = dest_1470023;
      break;
    case 18:
    case 17:
      if (!((ti_1470025.base == null))) {
      result_1475219 = nimCopy(dest_1470023, src_1470024, ti_1470025.base);
      }
      else {
      if ((ti_1470025.kind == 17)) {
      result_1475219 = (dest_1470023 === null || dest_1470023 === undefined) ? {m_type: ti_1470025} : dest_1470023;
      }
      else {
        result_1475219 = (dest_1470023 === null || dest_1470023 === undefined) ? {} : dest_1470023;
      }
      }
      nimCopyAux(result_1475219, src_1470024, ti_1470025.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_1470024 === null) {
        result_1475219 = null;
      }
      else {
        if (dest_1470023 === null || dest_1470023 === undefined) {
          dest_1470023 = new Array(src_1470024.length);
        }
        else {
          dest_1470023.length = src_1470024.length;
        }
        result_1475219 = dest_1470023;
        for (var i = 0; i < src_1470024.length; ++i) {
          result_1475219[i] = nimCopy(result_1475219[i], src_1470024[i], ti_1470025.base);
        }
      }
      break;
    case 28:
            if (src_1470024 !== null) {
        result_1475219 = src_1470024.slice(0);
      }
      break;
    default: 
      result_1475219 = src_1470024;
      break;
    }
  return result_1475219;
}
function arrayConstr(len_1480067, value_1480068, typ_1480069) {
        var result = new Array(len_1480067);
    for (var i = 0; i < len_1480067; ++i) result[i] = nimCopy(null, value_1480068, typ_1480069);
    return result;
}
function toJSStr(s_1455096) {
                    var Tmp5;
            var Tmp7;
  var result_1455097 = null;
    var res_1455170 = newSeq_1455128((s_1455096).length);
    var i_1455172 = 0;
    var j_1455174 = 0;
    L1: do {
        L2: while (true) {
        if (!(i_1455172 < (s_1455096).length)) break L2;
          var c_1455175 = s_1455096[i_1455172];
          if ((c_1455175 < 128)) {
          res_1455170[j_1455174] = String.fromCharCode(c_1455175);
          i_1455172 += 1;
          }
          else {
            var helper_1455198 = newSeq_1455128(0);
            L3: do {
                L4: while (true) {
                if (!true) break L4;
                  var code_1455199 = c_1455175.toString(16);
                  if (((code_1455199).length == 1)) {
                  helper_1455198.push("%0");;
                  }
                  else {
                  helper_1455198.push("%");;
                  }
                  helper_1455198.push(code_1455199);;
                  i_1455172 += 1;
                    if (((s_1455096).length <= i_1455172)) Tmp5 = true; else {                      Tmp5 = (s_1455096[i_1455172] < 128);                    }                  if (Tmp5) {
                  break L3;
                  }
                  c_1455175 = s_1455096[i_1455172];
                }
            } while(false);
++excHandler;
            Tmp7 = framePtr;
            try {
            res_1455170[j_1455174] = decodeURIComponent(helper_1455198.join(""));
--excHandler;
} catch (EXC) {
 var prevJSError = lastJSError;
 lastJSError = EXC;
 --excHandler;
            framePtr = Tmp7;
            res_1455170[j_1455174] = helper_1455198.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Tmp7;
            }
          }
          j_1455174 += 1;
        }
    } while(false);
    if (res_1455170.length < j_1455174) { for (var i=res_1455170.length;i<j_1455174;++i) res_1455170.push(null); }
               else { res_1455170.length = j_1455174; };
    result_1455097 = res_1455170.join("");
  return result_1455097;
}
function raiseException(e_1420218, ename_1420219) {
    e_1420218.name = ename_1420219;
    if ((excHandler == 0)) {
    unhandledException(e_1420218);
    }
    e_1420218.trace = nimCopy(null, rawWriteStackTrace_1410260(), NTI1188013);
    throw e_1420218;
}
function chckIndx(i_1480086, a_1480087, b_1480088) {
      var Tmp1;
  var result_1480089 = 0;
  BeforeRet: do {
      if (!(a_1480087 <= i_1480086)) Tmp1 = false; else {        Tmp1 = (i_1480086 <= b_1480088);      }    if (Tmp1) {
    result_1480089 = i_1480086;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_1480086, a_1480087, b_1480088);
    }
  } while (false);
  return result_1480089;
}
function addChar(x_1505031, c_1505032) {
    x_1505031.push(c_1505032);
}
function addInt(a_1460419, b_1460420) {
        var result = a_1460419 + b_1460420;
    checkOverflowInt(result);
    return result;
}
function eqStrings(a_1460222, b_1460223) {
        if (a_1460222 == b_1460223) return true;
    if (a_1460222 === null && b_1460223.length == 0) return true;
    if (b_1460223 === null && a_1460222.length == 0) return true;
    if ((!a_1460222) || (!b_1460223)) return false;
    var alen = a_1460222.length;
    if (alen != b_1460223.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_1460222[i] != b_1460223[i]) return false;
    return true;
}
var globalRaiseHook_1357018 = [null];
var localRaiseHook_1357023 = [null];
var outOfMemHook_1357026 = [null];
var unhandledExceptionHook_1357031 = [null];
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
framePtr = F.prev;
function isFatPointer_1465401(ti_1465403) {
  var result_1465404 = false;
  BeforeRet: do {
    result_1465404 = !((ConstSet1[ti_1465403.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_1465404;
}
function nimCopyAux(dest_1470028, src_1470029, n_1470031) {
    switch (n_1470031.kind) {
    case 0:
      break;
    case 1:
            dest_1470028[n_1470031.offset] = nimCopy(dest_1470028[n_1470031.offset], src_1470029[n_1470031.offset], n_1470031.typ);
      break;
    case 2:
          for (var i = 0; i < n_1470031.sons.length; i++) {
      nimCopyAux(dest_1470028, src_1470029, n_1470031.sons[i]);
    }
      break;
    case 3:
            dest_1470028[n_1470031.offset] = nimCopy(dest_1470028[n_1470031.offset], src_1470029[n_1470031.offset], n_1470031.typ);
      for (var i = 0; i < n_1470031.sons.length; ++i) {
        nimCopyAux(dest_1470028, src_1470029, n_1470031.sons[i][1]);
      }
      break;
    }
}
function add_1357042(x_1357045, x_1357045_Idx, y_1357046) {
          if (x_1357045[x_1357045_Idx] === null) { x_1357045[x_1357045_Idx] = []; }
      var off = x_1357045[x_1357045_Idx].length;
      x_1357045[x_1357045_Idx].length += y_1357046.length;
      for (var i = 0; i < y_1357046.length; ++i) {
        x_1357045[x_1357045_Idx][off+i] = y_1357046.charCodeAt(i);
      }
}
function auxWriteStackTrace_1380038(f_1380040) {
          var Tmp3;
  var result_1380041 = [[]];
    var it_1380051 = f_1380040;
    var i_1380053 = 0;
    var total_1380055 = 0;
    var tempFrames_1380062 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI1380043);
    L1: do {
        L2: while (true) {
          if (!!((it_1380051 == null))) Tmp3 = false; else {            Tmp3 = (i_1380053 <= 63);          }        if (!Tmp3) break L2;
          tempFrames_1380062[i_1380053].Field0 = it_1380051.procname;
          tempFrames_1380062[i_1380053].Field1 = it_1380051.line;
          tempFrames_1380062[i_1380053].Field2 = it_1380051.filename;
          i_1380053 += 1;
          total_1380055 += 1;
          it_1380051 = it_1380051.prev;
        }
    } while(false);
    L4: do {
        L5: while (true) {
        if (!!((it_1380051 == null))) break L5;
          total_1380055 += 1;
          it_1380051 = it_1380051.prev;
        }
    } while(false);
    result_1380041[0] = nimCopy(null, [], NTI1188013);
    if (!((total_1380055 == i_1380053))) {
    result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("("));;
    result_1380041[0].push.apply(result_1380041[0], cstrToNimstr(((total_1380055 - i_1380053))+""));;
    result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(" calls omitted) ...\x0A"));;
    }
    L6: do {
      var j_1395236 = 0;
      var colontmp__1870233 = 0;
      colontmp__1870233 = (i_1380053 - 1);
      var res_1870238 = colontmp__1870233;
      L7: do {
          L8: while (true) {
          if (!(0 <= res_1870238)) break L8;
            j_1395236 = res_1870238;
            result_1380041[0].push.apply(result_1380041[0], cstrToNimstr(tempFrames_1380062[j_1395236].Field2));;
            if ((0 < tempFrames_1380062[j_1395236].Field1)) {
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("("));;
            result_1380041[0].push.apply(result_1380041[0], cstrToNimstr((tempFrames_1380062[j_1395236].Field1)+""));;
            if (false) {
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(", "));;
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("0"));;
            }
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(")"));;
            }
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(" at "));;
            add_1357042(result_1380041, 0, tempFrames_1380062[j_1395236].Field0);
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("\x0A"));;
            res_1870238 -= 1;
          }
      } while(false);
    } while(false);
  return result_1380041[0];
}
function rawWriteStackTrace_1410260() {
  var result_1410262 = [];
    if (!((framePtr == null))) {
    result_1410262 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(auxWriteStackTrace_1380038(framePtr) || []), NTI1188013);
    }
    else {
      result_1410262 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI1188013);
    }
  return result_1410262;
}
function newSeq_1455128(len_1455131) {
  var result_1455133 = [];
    result_1455133 = new Array(len_1455131); for (var i=0;i<len_1455131;++i) {result_1455133[i]=null;}
  return result_1455133;
}
function unhandledException(e_1415059) {
    var buf_1415060 = [[]];
    if (!(((e_1415059.message).length == 0))) {
    buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("Error: unhandled exception: "));;
    buf_1415060[0].push.apply(buf_1415060[0], e_1415059.message);;
    }
    else {
    buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("Error: unhandled exception"));;
    }
    buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit(" ["));;
    add_1357042(buf_1415060, 0, e_1415059.name);
    buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("]\x0A"));;
    buf_1415060[0].push.apply(buf_1415060[0], rawWriteStackTrace_1410260());;
    var cbuf_1420201 = toJSStr(buf_1415060[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_1420201);
  }
  else {
    throw cbuf_1420201;
  }
}
function raiseIndexError(i_1440047, a_1440048, b_1440049) {
    var Tmp1;
    if ((b_1440049 < a_1440048)) {
    Tmp1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Tmp1 = (makeNimstrLit("index ") || []).concat(cstrToNimstr((i_1440047)+"") || [],makeNimstrLit(" not in ") || [],cstrToNimstr((a_1440048)+"") || [],makeNimstrLit(" .. ") || [],cstrToNimstr((b_1440049)+"") || []);
    }
    raiseException({message: nimCopy(null, Tmp1, NTI1188013), parent: null, m_type: NTI1194649, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_1855072(s_1855078, value_1855079) {
  var result_1855080 = false;
    result_1855080 = ((s_1855078.a <= value_1855079) && (value_1855079 <= s_1855078.b));
  return result_1855080;
}
function HEX2EHEX2E_1855001(a_1855006, b_1855008) {
  var result_1855014 = ({a: 0, b: 0});
    nimCopy(result_1855014, {a: a_1855006, b: b_1855008}, NTI1855011);
  return result_1855014;
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI1194637, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_1460403) {
        if (a_1460403 > 2147483647 || a_1460403 < -2147483648) raiseOverflow();
}
function sysFatal_1305418(message_1305422) {
    raiseException({message: nimCopy(null, message_1305422, NTI1188013), m_type: NTI1194641, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_1305414(msg_1305416) {
    sysFatal_1305418(msg_1305416);
}
function failedAssertImpl_1305480(msg_1305482) {
    raiseAssert_1305414(msg_1305482);
}
function f_1852002(lit_1852004) {
              var Tmp5;
  var result_1852005 = [];
    L1: do {
      var b_1852007 = 0;
      var i_1870218 = 0;
      var L_1870219 = (lit_1852004).length;
      L2: do {
          L3: while (true) {
          if (!(i_1870218 < L_1870219)) break L3;
            b_1852007 = lit_1852004[chckIndx(i_1870218, 0, (lit_1852004).length-1)];
            L4: do {
              if (contains_1855072(HEX2EHEX2E_1855001(48, 57), b_1852007)) {
              Tmp5 = b_1852007;
              }
              else {
              if ((b_1852007 == 95)) {
              break L4;
              }
              else {
                raiseException({message: makeNimstrLit("E"), parent: null, m_type: NTI1194643, name: null, trace: [], up: null}, "ValueError");
              }
              }
            } while(false);
            addChar(result_1852005, Tmp5);;
            i_1870218 = addInt(i_1870218, 1);
            if (!(((lit_1852004).length == L_1870219))) {
            failedAssertImpl_1305480(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.4.0/lib/system/iterators.nim(222, 11) `len(a) == L` the length of the string changed while iterating over it"));
            }
          }
      } while(false);
    } while(false);
  return result_1852005;
}
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
var s_1860045 = f_1852002(makeNimstrLit("1_2_3"));
if (!(eqStrings(s_1860045, makeNimstrLit("123")))) {
failedAssertImpl_1305480(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(8, 10) `s == \"123\"` "));
}
framePtr = F.prev;
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
framePtr = F.prev;
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
framePtr = F.prev;

AST

nnkStmtList.newTree(
  nnkFuncDef.newTree(
    newIdentNode("f"),
    newEmptyNode(),
    newEmptyNode(),
    nnkFormalParams.newTree(
      newIdentNode("string"),
      nnkIdentDefs.newTree(
        newIdentNode("lit"),
        newIdentNode("string"),
        newEmptyNode()
      )
    ),
    newEmptyNode(),
    newEmptyNode(),
    nnkStmtList.newTree(
      nnkForStmt.newTree(
        newIdentNode("b"),
        newIdentNode("lit"),
        nnkStmtList.newTree(
          nnkCall.newTree(
            nnkDotExpr.newTree(
              newIdentNode("result"),
              newIdentNode("add")
            ),
            nnkStmtList.newTree(
              nnkIfStmt.newTree(
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("in"),
                    newIdentNode("b"),
                    nnkInfix.newTree(
                      newIdentNode(".."),
                      newLit('0'),
                      newLit('9')
                    )
                  ),
                  nnkStmtList.newTree(
                    newIdentNode("b")
                  )
                ),
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("=="),
                    newIdentNode("b"),
                    newLit('_')
                  ),
                  nnkStmtList.newTree(
                    nnkContinueStmt.newTree(
                      newEmptyNode()
                    )
                  )
                ),
                nnkElse.newTree(
                  nnkStmtList.newTree(
                    nnkRaiseStmt.newTree(
                      nnkCall.newTree(
                        newIdentNode("newException"),
                        newIdentNode("ValueError"),
                        newLit("E")
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  ),
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      nnkCallStrLit.newTree(
        newIdentNode("f"),
        newLit("1_2_3")
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.2.0 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:491
    throw new Error(cbuf_190201);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(8, 10) `s == "123"`  [AssertionError]
No stack traceback available

    at unhandledException (/home/runner/work/Nim/Nim/temp:491:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:290:5)
    at sys_fatal_102618 (/home/runner/work/Nim/Nim/temp:536:5)
    at raise_assert_102614 (/home/runner/work/Nim/Nim/temp:541:5)
    at failed_assert_impl_102680 (/home/runner/work/Nim/Nim/temp:546:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:591:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node /home/runner/work/Nim/Nim/temp '

Stats

• Created 2023-07-10T13:43:04Z
• Started 2023-07-10T13:43:58
• Finished 2023-07-10T13:43:58
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI6241 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6233 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6237 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6221 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6243 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI110 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI625011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI143 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI160043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI6008 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6286 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI114 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI6281 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI6217 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6219 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6249 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI112 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NNI6249 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6249.node = NNI6249;
var NNI6219 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6219.node = NNI6219;
NTI6281.base = NTI6217;
NTI6286.base = NTI6217;
var NNI6217 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI6281, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI114, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI112, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI112, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI6286, name: "up", sons: null}]};
NTI6217.node = NNI6217;
var NNI6008 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6008.node = NNI6008;
NTI6217.base = NTI6008;
NTI6219.base = NTI6217;
NTI6249.base = NTI6219;
var NNI160043 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI114, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI143, name: "Field1", sons: null}]};
NTI160043.node = NNI160043;
var NNI625011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI110, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI110, name: "b", sons: null}]};
NTI625011.node = NNI625011;
var NNI6243 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6243.node = NNI6243;
var NNI6221 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6221.node = NNI6221;
NTI6221.base = NTI6217;
NTI6243.base = NTI6221;
var NNI6237 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6237.node = NNI6237;
var NNI6233 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6233.node = NNI6233;
NTI6233.base = NTI6219;
NTI6237.base = NTI6233;
var NNI6241 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6241.node = NNI6241;
NTI6241.base = NTI6219;
function makeNimstrLit(c_225062) {
      var ln = c_225062.length;
  var result = new Array(ln);
  for (var i = 0; i < ln; ++i) {
    result[i] = c_225062.charCodeAt(i);
  }
  return result;
}
function cstrToNimstr(c_225079) {
      var ln = c_225079.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_225079.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_225079.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_240023, src_240024, ti_240025) {
  var result_245219 = null;
    switch (ti_240025.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(is_fat_pointer_235401(ti_240025))) {
      result_245219 = src_240024;
      }
      else {
        result_245219 = [src_240024[0], src_240024[1]];
      }
      break;
    case 19:
            if (dest_240023 === null || dest_240023 === undefined) {
        dest_240023 = {};
      }
      else {
        for (var key in dest_240023) { delete dest_240023[key]; }
      }
      for (var key in src_240024) { dest_240023[key] = src_240024[key]; }
      result_245219 = dest_240023;
      break;
    case 18:
    case 17:
      if (!((ti_240025.base == null))) {
      result_245219 = nimCopy(dest_240023, src_240024, ti_240025.base);
      }
      else {
      if ((ti_240025.kind == 17)) {
      result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {m_type: ti_240025} : dest_240023;
      }
      else {
        result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {} : dest_240023;
      }
      }
      nimCopyAux(result_245219, src_240024, ti_240025.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_240024 === null) {
        result_245219 = null;
      }
      else {
        if (dest_240023 === null || dest_240023 === undefined) {
          dest_240023 = new Array(src_240024.length);
        }
        else {
          dest_240023.length = src_240024.length;
        }
        result_245219 = dest_240023;
        for (var i = 0; i < src_240024.length; ++i) {
          result_245219[i] = nimCopy(result_245219[i], src_240024[i], ti_240025.base);
        }
      }
      break;
    case 28:
            if (src_240024 !== null) {
        result_245219 = src_240024.slice(0);
      }
      break;
    default: 
      result_245219 = src_240024;
      break;
    }
  return result_245219;
}
function arrayConstr(len_250067, value_250068, typ_250069) {
        var result = new Array(len_250067);
    for (var i = 0; i < len_250067; ++i) result[i] = nimCopy(null, value_250068, typ_250069);
    return result;
}
function toJSStr(s_225096) {
                    var Tmp5;
            var Tmp7;
  var result_225097 = null;
    var res_225170 = new_seq_225128((s_225096 != null ? s_225096.length : 0));
    var i_225172 = 0;
    var j_225174 = 0;
    L1: do {
        L2: while (true) {
        if (!(i_225172 < (s_225096 != null ? s_225096.length : 0))) break L2;
          var c_225175 = s_225096[i_225172];
          if ((c_225175 < 128)) {
          res_225170[j_225174] = String.fromCharCode(c_225175);
          i_225172 += 1;
          }
          else {
            var helper_225198 = new_seq_225128(0);
            L3: do {
                L4: while (true) {
                if (!true) break L4;
                  var code_225199 = c_225175.toString(16);
                  if (((code_225199 != null ? code_225199.length : 0) == 1)) {
                  if (helper_225198 != null) { helper_225198.push("%0"); } else { helper_225198 = ["%0"]; };
                  }
                  else {
                  if (helper_225198 != null) { helper_225198.push("%"); } else { helper_225198 = ["%"]; };
                  }
                  if (helper_225198 != null) { helper_225198.push(code_225199); } else { helper_225198 = [code_225199]; };
                  i_225172 += 1;
                    if (((s_225096 != null ? s_225096.length : 0) <= i_225172)) Tmp5 = true; else {                      Tmp5 = (s_225096[i_225172] < 128);                    }                  if (Tmp5) {
                  break L3;
                  }
                  c_225175 = s_225096[i_225172];
                }
            } while(false);
++excHandler;
            Tmp7 = framePtr;
            try {
            res_225170[j_225174] = decodeURIComponent(helper_225198.join(""));
--excHandler;
} catch (EXC) {
 var prevJSError = lastJSError;
 lastJSError = EXC;
 --excHandler;
            framePtr = Tmp7;
            res_225170[j_225174] = helper_225198.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Tmp7;
            }
          }
          j_225174 += 1;
        }
    } while(false);
    if (res_225170 === null) res_225170 = [];
               if (res_225170.length < j_225174) { for (var i=res_225170.length;i<j_225174;++i) res_225170.push(null); }
               else { res_225170.length = j_225174; };
    result_225097 = res_225170.join("");
  return result_225097;
}
function raiseException(e_190218, ename_190219) {
    e_190218.name = ename_190219;
    if ((excHandler == 0)) {
    unhandledException(e_190218);
    }
    e_190218.trace = nimCopy(null, raw_write_stack_trace_180059(), NTI112);
    throw e_190218;
}
function chckIndx(i_250086, a_250087, b_250088) {
      var Tmp1;
  var result_250089 = 0;
  BeforeRet: do {
      if (!(a_250087 <= i_250086)) Tmp1 = false; else {        Tmp1 = (i_250086 <= b_250088);      }    if (Tmp1) {
    result_250089 = i_250086;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_250086, a_250087, b_250088);
    }
  } while (false);
  return result_250089;
}
function addChar(x_275031, c_275032) {
    x_275031.push(c_275032);
}
function addInt(a_230403, b_230404) {
        var result = a_230403 + b_230404;
    if (result > 2147483647 || result < -2147483648) raiseOverflow();
    return result;
}
function eqStrings(a_230222, b_230223) {
        if (a_230222 == b_230223) return true;
    if (a_230222 === null && b_230223.length == 0) return true;
    if (b_230223 === null && a_230222.length == 0) return true;
    if ((!a_230222) || (!b_230223)) return false;
    var alen = a_230222.length;
    if (alen != b_230223.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_230222[i] != b_230223[i]) return false;
    return true;
}
process.exitCode = 0;
var global_raise_hook_142018 = [null];
var local_raise_hook_142023 = [null];
var out_of_mem_hook_142026 = [null];
var unhandled_exception_hook_142031 = [null];
function is_fat_pointer_235401(ti_235403) {
  var result_235404 = false;
  BeforeRet: do {
    result_235404 = !((ConstSet1[ti_235403.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_235404;
}
function nimCopyAux(dest_240028, src_240029, n_240031) {
    switch (n_240031.kind) {
    case 0:
      break;
    case 1:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      break;
    case 2:
          for (var i = 0; i < n_240031.sons.length; i++) {
      nimCopyAux(dest_240028, src_240029, n_240031.sons[i]);
    }
      break;
    case 3:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      for (var i = 0; i < n_240031.sons.length; ++i) {
        nimCopyAux(dest_240028, src_240029, n_240031.sons[i][1]);
      }
      break;
    }
}
function add_142042(x_142045, x_142045_Idx, y_142046) {
          if (x_142045[x_142045_Idx] === null) { x_142045[x_142045_Idx] = []; }
      var off = x_142045[x_142045_Idx].length;
      x_142045[x_142045_Idx].length += y_142046.length;
      for (var i = 0; i < y_142046.length; ++i) {
        x_142045[x_142045_Idx][off+i] = y_142046.charCodeAt(i);
      }
}
function aux_write_stack_trace_160038(f_160040) {
          var Tmp3;
  var result_160041 = [null];
    var it_160049 = f_160040;
    var i_160051 = 0;
    var total_160053 = 0;
    var temp_frames_160060 = arrayConstr(64, {Field0: null, Field1: 0}, NTI160043);
    L1: do {
        L2: while (true) {
          if (!!((it_160049 == null))) Tmp3 = false; else {            Tmp3 = (i_160051 <= 63);          }        if (!Tmp3) break L2;
          temp_frames_160060[i_160051].Field0 = it_160049.procname;
          temp_frames_160060[i_160051].Field1 = it_160049.line;
          i_160051 += 1;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    L4: do {
        L5: while (true) {
        if (!!((it_160049 == null))) break L5;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    result_160041[0] = nimCopy(null, [], NTI112);
    if (!((total_160053 == i_160051))) {
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("(")); } else { result_160041[0] = makeNimstrLit("("); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr(((total_160053 - i_160051))+"")); } else { result_160041[0] = cstrToNimstr(((total_160053 - i_160051))+"").slice(); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(" calls omitted) ...\x0A")); } else { result_160041[0] = makeNimstrLit(" calls omitted) ...\x0A"); };
    }
    L6: do {
      var j_175236 = 0;
      var colontmp__640233 = 0;
      colontmp__640233 = (i_160051 - 1);
      var res_640238 = colontmp__640233;
      L7: do {
          L8: while (true) {
          if (!(0 <= res_640238)) break L8;
            j_175236 = res_640238;
            add_142042(result_160041, 0, temp_frames_160060[j_175236].Field0);
            if ((0 < temp_frames_160060[j_175236].Field1)) {
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(", line: ")); } else { result_160041[0] = makeNimstrLit(", line: "); };
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr((temp_frames_160060[j_175236].Field1)+"")); } else { result_160041[0] = cstrToNimstr((temp_frames_160060[j_175236].Field1)+"").slice(); };
            }
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("\x0A")); } else { result_160041[0] = makeNimstrLit("\x0A"); };
            res_640238 -= 1;
          }
      } while(false);
    } while(false);
  return result_160041[0];
}
function raw_write_stack_trace_180059() {
  var result_180061 = null;
    if (!((framePtr == null))) {
    result_180061 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(aux_write_stack_trace_160038(framePtr) || []), NTI112);
    }
    else {
      result_180061 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI112);
    }
  return result_180061;
}
function new_seq_225128(len_225131) {
  var result_225133 = null;
    result_225133 = new Array(len_225131); for (var i=0;i<len_225131;++i) {result_225133[i]=null;}
  return result_225133;
}
function unhandledException(e_185059) {
    var buf_185060 = [[]];
    if (!(((e_185059.message != null ? e_185059.message.length : 0) == 0))) {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception: ")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception: "); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(e_185059.message); } else { buf_185060[0] = e_185059.message.slice(); };
    }
    else {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception"); };
    }
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit(" [")); } else { buf_185060[0] = makeNimstrLit(" ["); };
    add_142042(buf_185060, 0, e_185059.name);
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("]\x0A")); } else { buf_185060[0] = makeNimstrLit("]\x0A"); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(raw_write_stack_trace_180059()); } else { buf_185060[0] = raw_write_stack_trace_180059().slice(); };
    var cbuf_190201 = toJSStr(buf_185060[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_190201);
  }
  else {
    throw cbuf_190201;
  }
}
function raiseIndexError(i_210047, a_210048, b_210049) {
    var Tmp1;
    if ((b_210049 < a_210048)) {
    Tmp1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Tmp1 = (makeNimstrLit("index ") || []).concat(cstrToNimstr((i_210047)+"") || [],makeNimstrLit(" not in ") || [],cstrToNimstr((a_210048)+"") || [],makeNimstrLit(" .. ") || [],cstrToNimstr((b_210049)+"") || []);
    }
    raiseException({message: nimCopy(null, Tmp1, NTI112), parent: null, m_type: NTI6249, name: null, trace: null, up: null}, "IndexError");
}
function contains_625072(s_625078, value_625079) {
  var result_625080 = false;
    result_625080 = ((s_625078.a <= value_625079) && (value_625079 <= s_625078.b));
  return result_625080;
}
function HEX2EHEX2E_625001(a_625006, b_625008) {
  var result_625014 = {a: 0, b: 0};
    nimCopy(result_625014, {a: a_625006, b: b_625008}, NTI625011);
  return result_625014;
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI6237, name: null, trace: null, up: null}, "OverflowError");
}
function sys_fatal_102618(message_102622) {
    raiseException({message: nimCopy(null, message_102622, NTI112), m_type: NTI6241, parent: null, name: null, trace: null, up: null}, "AssertionError");
}
function raise_assert_102614(msg_102616) {
    sys_fatal_102618(msg_102616);
}
function failed_assert_impl_102680(msg_102682) {
    raise_assert_102614(msg_102682);
}
function f_622003(lit_622005) {
              var Tmp5;
  var result_622006 = null;
    L1: do {
      var b_622008 = 0;
      var i_640218 = 0;
      var l_640219 = (lit_622005 != null ? lit_622005.length : 0);
      L2: do {
          L3: while (true) {
          if (!(i_640218 < l_640219)) break L3;
            b_622008 = lit_622005[chckIndx(i_640218, 0, (lit_622005 != null ? lit_622005.length : 0)+0-1)-0];
            L4: do {
              if (contains_625072(HEX2EHEX2E_625001(48, 57), b_622008)) {
              Tmp5 = b_622008;
              }
              else {
              if ((b_622008 == 95)) {
              break L4;
              }
              else {
                raiseException({message: makeNimstrLit("E"), parent: null, m_type: NTI6243, name: null, trace: null, up: null}, "ValueError");
              }
              }
            } while(false);
            if (result_622006 != null) { addChar(result_622006, Tmp5); } else { result_622006 = [Tmp5]; };
            i_640218 = addInt(i_640218, 1);
            if (!(((lit_622005 != null ? lit_622005.length : 0) == l_640219))) {
            failed_assert_impl_102680(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.2.0/lib/system/iterators.nim(207, 11) `len(a) == L` the length of the string changed while iterating over it"));
            }
          }
      } while(false);
    } while(false);
  return result_622006;
}
var s_630045 = f_622003(makeNimstrLit("1_2_3"));
if (!(eqStrings(s_630045, makeNimstrLit("123")))) {
failed_assert_impl_102680(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(8, 10) `s == \"123\"` "));
}

AST

nnkStmtList.newTree(
  nnkFuncDef.newTree(
    newIdentNode("f"),
    newEmptyNode(),
    newEmptyNode(),
    nnkFormalParams.newTree(
      newIdentNode("string"),
      nnkIdentDefs.newTree(
        newIdentNode("lit"),
        newIdentNode("string"),
        newEmptyNode()
      )
    ),
    newEmptyNode(),
    newEmptyNode(),
    nnkStmtList.newTree(
      nnkForStmt.newTree(
        newIdentNode("b"),
        newIdentNode("lit"),
        nnkStmtList.newTree(
          nnkCall.newTree(
            nnkDotExpr.newTree(
              newIdentNode("result"),
              newIdentNode("add")
            ),
            nnkStmtList.newTree(
              nnkIfStmt.newTree(
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("in"),
                    newIdentNode("b"),
                    nnkInfix.newTree(
                      newIdentNode(".."),
                      newLit('0'),
                      newLit('9')
                    )
                  ),
                  nnkStmtList.newTree(
                    newIdentNode("b")
                  )
                ),
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("=="),
                    newIdentNode("b"),
                    newLit('_')
                  ),
                  nnkStmtList.newTree(
                    nnkContinueStmt.newTree(
                      newEmptyNode()
                    )
                  )
                ),
                nnkElse.newTree(
                  nnkStmtList.newTree(
                    nnkRaiseStmt.newTree(
                      nnkCall.newTree(
                        newIdentNode("newException"),
                        newIdentNode("ValueError"),
                        newLit("E")
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  ),
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      nnkCallStrLit.newTree(
        newIdentNode("f"),
        newLit("1_2_3")
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.0.0 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp.nim(4, 25) Error: expression 'b' is of type 'char' and has to be discarded

Stats

• Created 2023-07-10T13:43:04Z
• Started 2023-07-10T13:44:11
• Finished 2023-07-10T13:44:11
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI6241 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6233 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6237 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6221 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6243 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI110 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI625011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI143 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI160043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI6008 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6286 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI114 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI6281 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI6217 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6219 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6249 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI112 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NNI6249 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6249.node = NNI6249;
var NNI6219 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6219.node = NNI6219;
NTI6281.base = NTI6217;
NTI6286.base = NTI6217;
var NNI6217 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI6281, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI114, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI112, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI112, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI6286, name: "up", sons: null}]};
NTI6217.node = NNI6217;
var NNI6008 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6008.node = NNI6008;
NTI6217.base = NTI6008;
NTI6219.base = NTI6217;
NTI6249.base = NTI6219;
var NNI160043 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI114, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI143, name: "Field1", sons: null}]};
NTI160043.node = NNI160043;
var NNI625011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI110, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI110, name: "b", sons: null}]};
NTI625011.node = NNI625011;
var NNI6243 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6243.node = NNI6243;
var NNI6221 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6221.node = NNI6221;
NTI6221.base = NTI6217;
NTI6243.base = NTI6221;
var NNI6237 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6237.node = NNI6237;
var NNI6233 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6233.node = NNI6233;
NTI6233.base = NTI6219;
NTI6237.base = NTI6233;
var NNI6241 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6241.node = NNI6241;
NTI6241.base = NTI6219;
function makeNimstrLit(c_225062) {
      var ln = c_225062.length;
  var result = new Array(ln);
  for (var i = 0; i < ln; ++i) {
    result[i] = c_225062.charCodeAt(i);
  }
  return result;
}
function cstrToNimstr(c_225079) {
      var ln = c_225079.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_225079.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_225079.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_240023, src_240024, ti_240025) {
  var result_245219 = null;
    switch (ti_240025.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(is_fat_pointer_235401(ti_240025))) {
      result_245219 = src_240024;
      }
      else {
        result_245219 = [src_240024[0], src_240024[1]];
      }
      break;
    case 19:
            if (dest_240023 === null || dest_240023 === undefined) {
        dest_240023 = {};
      }
      else {
        for (var key in dest_240023) { delete dest_240023[key]; }
      }
      for (var key in src_240024) { dest_240023[key] = src_240024[key]; }
      result_245219 = dest_240023;
      break;
    case 18:
    case 17:
      if (!((ti_240025.base == null))) {
      result_245219 = nimCopy(dest_240023, src_240024, ti_240025.base);
      }
      else {
      if ((ti_240025.kind == 17)) {
      result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {m_type: ti_240025} : dest_240023;
      }
      else {
        result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {} : dest_240023;
      }
      }
      nimCopyAux(result_245219, src_240024, ti_240025.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_240024 === null) {
        result_245219 = null;
      }
      else {
        if (dest_240023 === null || dest_240023 === undefined) {
          dest_240023 = new Array(src_240024.length);
        }
        else {
          dest_240023.length = src_240024.length;
        }
        result_245219 = dest_240023;
        for (var i = 0; i < src_240024.length; ++i) {
          result_245219[i] = nimCopy(result_245219[i], src_240024[i], ti_240025.base);
        }
      }
      break;
    case 28:
            if (src_240024 !== null) {
        result_245219 = src_240024.slice(0);
      }
      break;
    default: 
      result_245219 = src_240024;
      break;
    }
  return result_245219;
}
function arrayConstr(len_250067, value_250068, typ_250069) {
        var result = new Array(len_250067);
    for (var i = 0; i < len_250067; ++i) result[i] = nimCopy(null, value_250068, typ_250069);
    return result;
}
function toJSStr(s_225096) {
                    var Tmp5;
            var Tmp7;
  var result_225097 = null;
    var res_225170 = new_seq_225128((s_225096 != null ? s_225096.length : 0));
    var i_225172 = 0;
    var j_225174 = 0;
    L1: do {
        L2: while (true) {
        if (!(i_225172 < (s_225096 != null ? s_225096.length : 0))) break L2;
          var c_225175 = s_225096[i_225172];
          if ((c_225175 < 128)) {
          res_225170[j_225174] = String.fromCharCode(c_225175);
          i_225172 += 1;
          }
          else {
            var helper_225198 = new_seq_225128(0);
            L3: do {
                L4: while (true) {
                if (!true) break L4;
                  var code_225199 = c_225175.toString(16);
                  if (((code_225199 != null ? code_225199.length : 0) == 1)) {
                  if (helper_225198 != null) { helper_225198.push("%0"); } else { helper_225198 = ["%0"]; };
                  }
                  else {
                  if (helper_225198 != null) { helper_225198.push("%"); } else { helper_225198 = ["%"]; };
                  }
                  if (helper_225198 != null) { helper_225198.push(code_225199); } else { helper_225198 = [code_225199]; };
                  i_225172 += 1;
                    if (((s_225096 != null ? s_225096.length : 0) <= i_225172)) Tmp5 = true; else {                      Tmp5 = (s_225096[i_225172] < 128);                    }                  if (Tmp5) {
                  break L3;
                  }
                  c_225175 = s_225096[i_225172];
                }
            } while(false);
++excHandler;
            Tmp7 = framePtr;
            try {
            res_225170[j_225174] = decodeURIComponent(helper_225198.join(""));
--excHandler;
} catch (EXC) {
 var prevJSError = lastJSError;
 lastJSError = EXC;
 --excHandler;
            framePtr = Tmp7;
            res_225170[j_225174] = helper_225198.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Tmp7;
            }
          }
          j_225174 += 1;
        }
    } while(false);
    if (res_225170 === null) res_225170 = [];
               if (res_225170.length < j_225174) { for (var i=res_225170.length;i<j_225174;++i) res_225170.push(null); }
               else { res_225170.length = j_225174; };
    result_225097 = res_225170.join("");
  return result_225097;
}
function raiseException(e_190218, ename_190219) {
    e_190218.name = ename_190219;
    if ((excHandler == 0)) {
    unhandledException(e_190218);
    }
    e_190218.trace = nimCopy(null, raw_write_stack_trace_180059(), NTI112);
    throw e_190218;
}
function chckIndx(i_250086, a_250087, b_250088) {
      var Tmp1;
  var result_250089 = 0;
  BeforeRet: do {
      if (!(a_250087 <= i_250086)) Tmp1 = false; else {        Tmp1 = (i_250086 <= b_250088);      }    if (Tmp1) {
    result_250089 = i_250086;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_250086, a_250087, b_250088);
    }
  } while (false);
  return result_250089;
}
function addChar(x_275031, c_275032) {
    x_275031.push(c_275032);
}
function addInt(a_230403, b_230404) {
        var result = a_230403 + b_230404;
    if (result > 2147483647 || result < -2147483648) raiseOverflow();
    return result;
}
function eqStrings(a_230222, b_230223) {
        if (a_230222 == b_230223) return true;
    if (a_230222 === null && b_230223.length == 0) return true;
    if (b_230223 === null && a_230222.length == 0) return true;
    if ((!a_230222) || (!b_230223)) return false;
    var alen = a_230222.length;
    if (alen != b_230223.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_230222[i] != b_230223[i]) return false;
    return true;
}
process.exitCode = 0;
var global_raise_hook_142018 = [null];
var local_raise_hook_142023 = [null];
var out_of_mem_hook_142026 = [null];
var unhandled_exception_hook_142031 = [null];
function is_fat_pointer_235401(ti_235403) {
  var result_235404 = false;
  BeforeRet: do {
    result_235404 = !((ConstSet1[ti_235403.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_235404;
}
function nimCopyAux(dest_240028, src_240029, n_240031) {
    switch (n_240031.kind) {
    case 0:
      break;
    case 1:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      break;
    case 2:
          for (var i = 0; i < n_240031.sons.length; i++) {
      nimCopyAux(dest_240028, src_240029, n_240031.sons[i]);
    }
      break;
    case 3:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      for (var i = 0; i < n_240031.sons.length; ++i) {
        nimCopyAux(dest_240028, src_240029, n_240031.sons[i][1]);
      }
      break;
    }
}
function add_142042(x_142045, x_142045_Idx, y_142046) {
          if (x_142045[x_142045_Idx] === null) { x_142045[x_142045_Idx] = []; }
      var off = x_142045[x_142045_Idx].length;
      x_142045[x_142045_Idx].length += y_142046.length;
      for (var i = 0; i < y_142046.length; ++i) {
        x_142045[x_142045_Idx][off+i] = y_142046.charCodeAt(i);
      }
}
function aux_write_stack_trace_160038(f_160040) {
          var Tmp3;
  var result_160041 = [null];
    var it_160049 = f_160040;
    var i_160051 = 0;
    var total_160053 = 0;
    var temp_frames_160060 = arrayConstr(64, {Field0: null, Field1: 0}, NTI160043);
    L1: do {
        L2: while (true) {
          if (!!((it_160049 == null))) Tmp3 = false; else {            Tmp3 = (i_160051 <= 63);          }        if (!Tmp3) break L2;
          temp_frames_160060[i_160051].Field0 = it_160049.procname;
          temp_frames_160060[i_160051].Field1 = it_160049.line;
          i_160051 += 1;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    L4: do {
        L5: while (true) {
        if (!!((it_160049 == null))) break L5;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    result_160041[0] = nimCopy(null, [], NTI112);
    if (!((total_160053 == i_160051))) {
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("(")); } else { result_160041[0] = makeNimstrLit("("); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr(((total_160053 - i_160051))+"")); } else { result_160041[0] = cstrToNimstr(((total_160053 - i_160051))+"").slice(); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(" calls omitted) ...\x0A")); } else { result_160041[0] = makeNimstrLit(" calls omitted) ...\x0A"); };
    }
    L6: do {
      var j_175236 = 0;
      var colontmp__640233 = 0;
      colontmp__640233 = (i_160051 - 1);
      var res_640238 = colontmp__640233;
      L7: do {
          L8: while (true) {
          if (!(0 <= res_640238)) break L8;
            j_175236 = res_640238;
            add_142042(result_160041, 0, temp_frames_160060[j_175236].Field0);
            if ((0 < temp_frames_160060[j_175236].Field1)) {
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(", line: ")); } else { result_160041[0] = makeNimstrLit(", line: "); };
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr((temp_frames_160060[j_175236].Field1)+"")); } else { result_160041[0] = cstrToNimstr((temp_frames_160060[j_175236].Field1)+"").slice(); };
            }
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("\x0A")); } else { result_160041[0] = makeNimstrLit("\x0A"); };
            res_640238 -= 1;
          }
      } while(false);
    } while(false);
  return result_160041[0];
}
function raw_write_stack_trace_180059() {
  var result_180061 = null;
    if (!((framePtr == null))) {
    result_180061 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(aux_write_stack_trace_160038(framePtr) || []), NTI112);
    }
    else {
      result_180061 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI112);
    }
  return result_180061;
}
function new_seq_225128(len_225131) {
  var result_225133 = null;
    result_225133 = new Array(len_225131); for (var i=0;i<len_225131;++i) {result_225133[i]=null;}
  return result_225133;
}
function unhandledException(e_185059) {
    var buf_185060 = [[]];
    if (!(((e_185059.message != null ? e_185059.message.length : 0) == 0))) {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception: ")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception: "); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(e_185059.message); } else { buf_185060[0] = e_185059.message.slice(); };
    }
    else {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception"); };
    }
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit(" [")); } else { buf_185060[0] = makeNimstrLit(" ["); };
    add_142042(buf_185060, 0, e_185059.name);
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("]\x0A")); } else { buf_185060[0] = makeNimstrLit("]\x0A"); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(raw_write_stack_trace_180059()); } else { buf_185060[0] = raw_write_stack_trace_180059().slice(); };
    var cbuf_190201 = toJSStr(buf_185060[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_190201);
  }
  else {
    throw cbuf_190201;
  }
}
function raiseIndexError(i_210047, a_210048, b_210049) {
    var Tmp1;
    if ((b_210049 < a_210048)) {
    Tmp1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Tmp1 = (makeNimstrLit("index ") || []).concat(cstrToNimstr((i_210047)+"") || [],makeNimstrLit(" not in ") || [],cstrToNimstr((a_210048)+"") || [],makeNimstrLit(" .. ") || [],cstrToNimstr((b_210049)+"") || []);
    }
    raiseException({message: nimCopy(null, Tmp1, NTI112), parent: null, m_type: NTI6249, name: null, trace: null, up: null}, "IndexError");
}
function contains_625072(s_625078, value_625079) {
  var result_625080 = false;
    result_625080 = ((s_625078.a <= value_625079) && (value_625079 <= s_625078.b));
  return result_625080;
}
function HEX2EHEX2E_625001(a_625006, b_625008) {
  var result_625014 = {a: 0, b: 0};
    nimCopy(result_625014, {a: a_625006, b: b_625008}, NTI625011);
  return result_625014;
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI6237, name: null, trace: null, up: null}, "OverflowError");
}
function sys_fatal_102618(message_102622) {
    raiseException({message: nimCopy(null, message_102622, NTI112), m_type: NTI6241, parent: null, name: null, trace: null, up: null}, "AssertionError");
}
function raise_assert_102614(msg_102616) {
    sys_fatal_102618(msg_102616);
}
function failed_assert_impl_102680(msg_102682) {
    raise_assert_102614(msg_102682);
}
function f_622003(lit_622005) {
              var Tmp5;
  var result_622006 = null;
    L1: do {
      var b_622008 = 0;
      var i_640218 = 0;
      var l_640219 = (lit_622005 != null ? lit_622005.length : 0);
      L2: do {
          L3: while (true) {
          if (!(i_640218 < l_640219)) break L3;
            b_622008 = lit_622005[chckIndx(i_640218, 0, (lit_622005 != null ? lit_622005.length : 0)+0-1)-0];
            L4: do {
              if (contains_625072(HEX2EHEX2E_625001(48, 57), b_622008)) {
              Tmp5 = b_622008;
              }
              else {
              if ((b_622008 == 95)) {
              break L4;
              }
              else {
                raiseException({message: makeNimstrLit("E"), parent: null, m_type: NTI6243, name: null, trace: null, up: null}, "ValueError");
              }
              }
            } while(false);
            if (result_622006 != null) { addChar(result_622006, Tmp5); } else { result_622006 = [Tmp5]; };
            i_640218 = addInt(i_640218, 1);
            if (!(((lit_622005 != null ? lit_622005.length : 0) == l_640219))) {
            failed_assert_impl_102680(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.2.0/lib/system/iterators.nim(207, 11) `len(a) == L` the length of the string changed while iterating over it"));
            }
          }
      } while(false);
    } while(false);
  return result_622006;
}
var s_630045 = f_622003(makeNimstrLit("1_2_3"));
if (!(eqStrings(s_630045, makeNimstrLit("123")))) {
failed_assert_impl_102680(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(8, 10) `s == \"123\"` "));
}

AST

nnkStmtList.newTree(
  nnkFuncDef.newTree(
    newIdentNode("f"),
    newEmptyNode(),
    newEmptyNode(),
    nnkFormalParams.newTree(
      newIdentNode("string"),
      nnkIdentDefs.newTree(
        newIdentNode("lit"),
        newIdentNode("string"),
        newEmptyNode()
      )
    ),
    newEmptyNode(),
    newEmptyNode(),
    nnkStmtList.newTree(
      nnkForStmt.newTree(
        newIdentNode("b"),
        newIdentNode("lit"),
        nnkStmtList.newTree(
          nnkCall.newTree(
            nnkDotExpr.newTree(
              newIdentNode("result"),
              newIdentNode("add")
            ),
            nnkStmtList.newTree(
              nnkIfStmt.newTree(
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("in"),
                    newIdentNode("b"),
                    nnkInfix.newTree(
                      newIdentNode(".."),
                      newLit('0'),
                      newLit('9')
                    )
                  ),
                  nnkStmtList.newTree(
                    newIdentNode("b")
                  )
                ),
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("=="),
                    newIdentNode("b"),
                    newLit('_')
                  ),
                  nnkStmtList.newTree(
                    nnkContinueStmt.newTree(
                      newEmptyNode()
                    )
                  )
                ),
                nnkElse.newTree(
                  nnkStmtList.newTree(
                    nnkRaiseStmt.newTree(
                      nnkCall.newTree(
                        newIdentNode("newException"),
                        newIdentNode("ValueError"),
                        newLit("E")
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  ),
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      nnkCallStrLit.newTree(
        newIdentNode("f"),
        newLit("1_2_3")
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

0.20.2 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp.nim(4, 25) Error: expression 'b' is of type 'char' and has to be discarded

Stats

• Created 2023-07-10T13:43:04Z
• Started 2023-07-10T13:44:21
• Finished 2023-07-10T13:44:21
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI6241 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6233 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6237 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6221 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6243 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI110 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI625011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI143 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI160043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI6008 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6286 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI114 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI6281 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI6217 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6219 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6249 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI112 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NNI6249 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6249.node = NNI6249;
var NNI6219 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6219.node = NNI6219;
NTI6281.base = NTI6217;
NTI6286.base = NTI6217;
var NNI6217 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI6281, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI114, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI112, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI112, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI6286, name: "up", sons: null}]};
NTI6217.node = NNI6217;
var NNI6008 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6008.node = NNI6008;
NTI6217.base = NTI6008;
NTI6219.base = NTI6217;
NTI6249.base = NTI6219;
var NNI160043 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI114, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI143, name: "Field1", sons: null}]};
NTI160043.node = NNI160043;
var NNI625011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI110, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI110, name: "b", sons: null}]};
NTI625011.node = NNI625011;
var NNI6243 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6243.node = NNI6243;
var NNI6221 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6221.node = NNI6221;
NTI6221.base = NTI6217;
NTI6243.base = NTI6221;
var NNI6237 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6237.node = NNI6237;
var NNI6233 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6233.node = NNI6233;
NTI6233.base = NTI6219;
NTI6237.base = NTI6233;
var NNI6241 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6241.node = NNI6241;
NTI6241.base = NTI6219;
function makeNimstrLit(c_225062) {
      var ln = c_225062.length;
  var result = new Array(ln);
  for (var i = 0; i < ln; ++i) {
    result[i] = c_225062.charCodeAt(i);
  }
  return result;
}
function cstrToNimstr(c_225079) {
      var ln = c_225079.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_225079.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_225079.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_240023, src_240024, ti_240025) {
  var result_245219 = null;
    switch (ti_240025.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(is_fat_pointer_235401(ti_240025))) {
      result_245219 = src_240024;
      }
      else {
        result_245219 = [src_240024[0], src_240024[1]];
      }
      break;
    case 19:
            if (dest_240023 === null || dest_240023 === undefined) {
        dest_240023 = {};
      }
      else {
        for (var key in dest_240023) { delete dest_240023[key]; }
      }
      for (var key in src_240024) { dest_240023[key] = src_240024[key]; }
      result_245219 = dest_240023;
      break;
    case 18:
    case 17:
      if (!((ti_240025.base == null))) {
      result_245219 = nimCopy(dest_240023, src_240024, ti_240025.base);
      }
      else {
      if ((ti_240025.kind == 17)) {
      result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {m_type: ti_240025} : dest_240023;
      }
      else {
        result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {} : dest_240023;
      }
      }
      nimCopyAux(result_245219, src_240024, ti_240025.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_240024 === null) {
        result_245219 = null;
      }
      else {
        if (dest_240023 === null || dest_240023 === undefined) {
          dest_240023 = new Array(src_240024.length);
        }
        else {
          dest_240023.length = src_240024.length;
        }
        result_245219 = dest_240023;
        for (var i = 0; i < src_240024.length; ++i) {
          result_245219[i] = nimCopy(result_245219[i], src_240024[i], ti_240025.base);
        }
      }
      break;
    case 28:
            if (src_240024 !== null) {
        result_245219 = src_240024.slice(0);
      }
      break;
    default: 
      result_245219 = src_240024;
      break;
    }
  return result_245219;
}
function arrayConstr(len_250067, value_250068, typ_250069) {
        var result = new Array(len_250067);
    for (var i = 0; i < len_250067; ++i) result[i] = nimCopy(null, value_250068, typ_250069);
    return result;
}
function toJSStr(s_225096) {
                    var Tmp5;
            var Tmp7;
  var result_225097 = null;
    var res_225170 = new_seq_225128((s_225096 != null ? s_225096.length : 0));
    var i_225172 = 0;
    var j_225174 = 0;
    L1: do {
        L2: while (true) {
        if (!(i_225172 < (s_225096 != null ? s_225096.length : 0))) break L2;
          var c_225175 = s_225096[i_225172];
          if ((c_225175 < 128)) {
          res_225170[j_225174] = String.fromCharCode(c_225175);
          i_225172 += 1;
          }
          else {
            var helper_225198 = new_seq_225128(0);
            L3: do {
                L4: while (true) {
                if (!true) break L4;
                  var code_225199 = c_225175.toString(16);
                  if (((code_225199 != null ? code_225199.length : 0) == 1)) {
                  if (helper_225198 != null) { helper_225198.push("%0"); } else { helper_225198 = ["%0"]; };
                  }
                  else {
                  if (helper_225198 != null) { helper_225198.push("%"); } else { helper_225198 = ["%"]; };
                  }
                  if (helper_225198 != null) { helper_225198.push(code_225199); } else { helper_225198 = [code_225199]; };
                  i_225172 += 1;
                    if (((s_225096 != null ? s_225096.length : 0) <= i_225172)) Tmp5 = true; else {                      Tmp5 = (s_225096[i_225172] < 128);                    }                  if (Tmp5) {
                  break L3;
                  }
                  c_225175 = s_225096[i_225172];
                }
            } while(false);
++excHandler;
            Tmp7 = framePtr;
            try {
            res_225170[j_225174] = decodeURIComponent(helper_225198.join(""));
--excHandler;
} catch (EXC) {
 var prevJSError = lastJSError;
 lastJSError = EXC;
 --excHandler;
            framePtr = Tmp7;
            res_225170[j_225174] = helper_225198.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Tmp7;
            }
          }
          j_225174 += 1;
        }
    } while(false);
    if (res_225170 === null) res_225170 = [];
               if (res_225170.length < j_225174) { for (var i=res_225170.length;i<j_225174;++i) res_225170.push(null); }
               else { res_225170.length = j_225174; };
    result_225097 = res_225170.join("");
  return result_225097;
}
function raiseException(e_190218, ename_190219) {
    e_190218.name = ename_190219;
    if ((excHandler == 0)) {
    unhandledException(e_190218);
    }
    e_190218.trace = nimCopy(null, raw_write_stack_trace_180059(), NTI112);
    throw e_190218;
}
function chckIndx(i_250086, a_250087, b_250088) {
      var Tmp1;
  var result_250089 = 0;
  BeforeRet: do {
      if (!(a_250087 <= i_250086)) Tmp1 = false; else {        Tmp1 = (i_250086 <= b_250088);      }    if (Tmp1) {
    result_250089 = i_250086;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_250086, a_250087, b_250088);
    }
  } while (false);
  return result_250089;
}
function addChar(x_275031, c_275032) {
    x_275031.push(c_275032);
}
function addInt(a_230403, b_230404) {
        var result = a_230403 + b_230404;
    if (result > 2147483647 || result < -2147483648) raiseOverflow();
    return result;
}
function eqStrings(a_230222, b_230223) {
        if (a_230222 == b_230223) return true;
    if (a_230222 === null && b_230223.length == 0) return true;
    if (b_230223 === null && a_230222.length == 0) return true;
    if ((!a_230222) || (!b_230223)) return false;
    var alen = a_230222.length;
    if (alen != b_230223.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_230222[i] != b_230223[i]) return false;
    return true;
}
process.exitCode = 0;
var global_raise_hook_142018 = [null];
var local_raise_hook_142023 = [null];
var out_of_mem_hook_142026 = [null];
var unhandled_exception_hook_142031 = [null];
function is_fat_pointer_235401(ti_235403) {
  var result_235404 = false;
  BeforeRet: do {
    result_235404 = !((ConstSet1[ti_235403.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_235404;
}
function nimCopyAux(dest_240028, src_240029, n_240031) {
    switch (n_240031.kind) {
    case 0:
      break;
    case 1:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      break;
    case 2:
          for (var i = 0; i < n_240031.sons.length; i++) {
      nimCopyAux(dest_240028, src_240029, n_240031.sons[i]);
    }
      break;
    case 3:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      for (var i = 0; i < n_240031.sons.length; ++i) {
        nimCopyAux(dest_240028, src_240029, n_240031.sons[i][1]);
      }
      break;
    }
}
function add_142042(x_142045, x_142045_Idx, y_142046) {
          if (x_142045[x_142045_Idx] === null) { x_142045[x_142045_Idx] = []; }
      var off = x_142045[x_142045_Idx].length;
      x_142045[x_142045_Idx].length += y_142046.length;
      for (var i = 0; i < y_142046.length; ++i) {
        x_142045[x_142045_Idx][off+i] = y_142046.charCodeAt(i);
      }
}
function aux_write_stack_trace_160038(f_160040) {
          var Tmp3;
  var result_160041 = [null];
    var it_160049 = f_160040;
    var i_160051 = 0;
    var total_160053 = 0;
    var temp_frames_160060 = arrayConstr(64, {Field0: null, Field1: 0}, NTI160043);
    L1: do {
        L2: while (true) {
          if (!!((it_160049 == null))) Tmp3 = false; else {            Tmp3 = (i_160051 <= 63);          }        if (!Tmp3) break L2;
          temp_frames_160060[i_160051].Field0 = it_160049.procname;
          temp_frames_160060[i_160051].Field1 = it_160049.line;
          i_160051 += 1;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    L4: do {
        L5: while (true) {
        if (!!((it_160049 == null))) break L5;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    result_160041[0] = nimCopy(null, [], NTI112);
    if (!((total_160053 == i_160051))) {
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("(")); } else { result_160041[0] = makeNimstrLit("("); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr(((total_160053 - i_160051))+"")); } else { result_160041[0] = cstrToNimstr(((total_160053 - i_160051))+"").slice(); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(" calls omitted) ...\x0A")); } else { result_160041[0] = makeNimstrLit(" calls omitted) ...\x0A"); };
    }
    L6: do {
      var j_175236 = 0;
      var colontmp__640233 = 0;
      colontmp__640233 = (i_160051 - 1);
      var res_640238 = colontmp__640233;
      L7: do {
          L8: while (true) {
          if (!(0 <= res_640238)) break L8;
            j_175236 = res_640238;
            add_142042(result_160041, 0, temp_frames_160060[j_175236].Field0);
            if ((0 < temp_frames_160060[j_175236].Field1)) {
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(", line: ")); } else { result_160041[0] = makeNimstrLit(", line: "); };
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr((temp_frames_160060[j_175236].Field1)+"")); } else { result_160041[0] = cstrToNimstr((temp_frames_160060[j_175236].Field1)+"").slice(); };
            }
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("\x0A")); } else { result_160041[0] = makeNimstrLit("\x0A"); };
            res_640238 -= 1;
          }
      } while(false);
    } while(false);
  return result_160041[0];
}
function raw_write_stack_trace_180059() {
  var result_180061 = null;
    if (!((framePtr == null))) {
    result_180061 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(aux_write_stack_trace_160038(framePtr) || []), NTI112);
    }
    else {
      result_180061 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI112);
    }
  return result_180061;
}
function new_seq_225128(len_225131) {
  var result_225133 = null;
    result_225133 = new Array(len_225131); for (var i=0;i<len_225131;++i) {result_225133[i]=null;}
  return result_225133;
}
function unhandledException(e_185059) {
    var buf_185060 = [[]];
    if (!(((e_185059.message != null ? e_185059.message.length : 0) == 0))) {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception: ")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception: "); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(e_185059.message); } else { buf_185060[0] = e_185059.message.slice(); };
    }
    else {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception"); };
    }
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit(" [")); } else { buf_185060[0] = makeNimstrLit(" ["); };
    add_142042(buf_185060, 0, e_185059.name);
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("]\x0A")); } else { buf_185060[0] = makeNimstrLit("]\x0A"); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(raw_write_stack_trace_180059()); } else { buf_185060[0] = raw_write_stack_trace_180059().slice(); };
    var cbuf_190201 = toJSStr(buf_185060[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_190201);
  }
  else {
    throw cbuf_190201;
  }
}
function raiseIndexError(i_210047, a_210048, b_210049) {
    var Tmp1;
    if ((b_210049 < a_210048)) {
    Tmp1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Tmp1 = (makeNimstrLit("index ") || []).concat(cstrToNimstr((i_210047)+"") || [],makeNimstrLit(" not in ") || [],cstrToNimstr((a_210048)+"") || [],makeNimstrLit(" .. ") || [],cstrToNimstr((b_210049)+"") || []);
    }
    raiseException({message: nimCopy(null, Tmp1, NTI112), parent: null, m_type: NTI6249, name: null, trace: null, up: null}, "IndexError");
}
function contains_625072(s_625078, value_625079) {
  var result_625080 = false;
    result_625080 = ((s_625078.a <= value_625079) && (value_625079 <= s_625078.b));
  return result_625080;
}
function HEX2EHEX2E_625001(a_625006, b_625008) {
  var result_625014 = {a: 0, b: 0};
    nimCopy(result_625014, {a: a_625006, b: b_625008}, NTI625011);
  return result_625014;
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI6237, name: null, trace: null, up: null}, "OverflowError");
}
function sys_fatal_102618(message_102622) {
    raiseException({message: nimCopy(null, message_102622, NTI112), m_type: NTI6241, parent: null, name: null, trace: null, up: null}, "AssertionError");
}
function raise_assert_102614(msg_102616) {
    sys_fatal_102618(msg_102616);
}
function failed_assert_impl_102680(msg_102682) {
    raise_assert_102614(msg_102682);
}
function f_622003(lit_622005) {
              var Tmp5;
  var result_622006 = null;
    L1: do {
      var b_622008 = 0;
      var i_640218 = 0;
      var l_640219 = (lit_622005 != null ? lit_622005.length : 0);
      L2: do {
          L3: while (true) {
          if (!(i_640218 < l_640219)) break L3;
            b_622008 = lit_622005[chckIndx(i_640218, 0, (lit_622005 != null ? lit_622005.length : 0)+0-1)-0];
            L4: do {
              if (contains_625072(HEX2EHEX2E_625001(48, 57), b_622008)) {
              Tmp5 = b_622008;
              }
              else {
              if ((b_622008 == 95)) {
              break L4;
              }
              else {
                raiseException({message: makeNimstrLit("E"), parent: null, m_type: NTI6243, name: null, trace: null, up: null}, "ValueError");
              }
              }
            } while(false);
            if (result_622006 != null) { addChar(result_622006, Tmp5); } else { result_622006 = [Tmp5]; };
            i_640218 = addInt(i_640218, 1);
            if (!(((lit_622005 != null ? lit_622005.length : 0) == l_640219))) {
            failed_assert_impl_102680(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.2.0/lib/system/iterators.nim(207, 11) `len(a) == L` the length of the string changed while iterating over it"));
            }
          }
      } while(false);
    } while(false);
  return result_622006;
}
var s_630045 = f_622003(makeNimstrLit("1_2_3"));
if (!(eqStrings(s_630045, makeNimstrLit("123")))) {
failed_assert_impl_102680(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(8, 10) `s == \"123\"` "));
}

AST

nnkStmtList.newTree(
  nnkFuncDef.newTree(
    newIdentNode("f"),
    newEmptyNode(),
    newEmptyNode(),
    nnkFormalParams.newTree(
      newIdentNode("string"),
      nnkIdentDefs.newTree(
        newIdentNode("lit"),
        newIdentNode("string"),
        newEmptyNode()
      )
    ),
    newEmptyNode(),
    newEmptyNode(),
    nnkStmtList.newTree(
      nnkForStmt.newTree(
        newIdentNode("b"),
        newIdentNode("lit"),
        nnkStmtList.newTree(
          nnkCall.newTree(
            nnkDotExpr.newTree(
              newIdentNode("result"),
              newIdentNode("add")
            ),
            nnkStmtList.newTree(
              nnkIfStmt.newTree(
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("in"),
                    newIdentNode("b"),
                    nnkInfix.newTree(
                      newIdentNode(".."),
                      newLit('0'),
                      newLit('9')
                    )
                  ),
                  nnkStmtList.newTree(
                    newIdentNode("b")
                  )
                ),
                nnkElifBranch.newTree(
                  nnkInfix.newTree(
                    newIdentNode("=="),
                    newIdentNode("b"),
                    newLit('_')
                  ),
                  nnkStmtList.newTree(
                    nnkContinueStmt.newTree(
                      newEmptyNode()
                    )
                  )
                ),
                nnkElse.newTree(
                  nnkStmtList.newTree(
                    nnkRaiseStmt.newTree(
                      nnkCall.newTree(
                        newIdentNode("newException"),
                        newIdentNode("ValueError"),
                        newLit("E")
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  ),
  nnkLetSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      nnkCallStrLit.newTree(
        newIdentNode("f"),
        newLit("1_2_3")
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

🤖 Bug found in 49 minutes bisecting 7 commits at 0 commits per second.

[juancarlospaco]

!nim js

var s = ""
for c in "1_2_3": s.add(if c in '0'..'9': c else: continue)
doAssert s == "123"

[github-actions]

@juancarlospaco (contributor)

devel :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:535
    throw new Error(cbuf_33556647);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 1) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:535:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:294:5)
    at sysFatal_268435501 (/home/runner/work/Nim/Nim/temp:647:5)
    at raiseAssert_268435499 (/home/runner/work/Nim/Nim/temp:653:5)
    at failedAssertImpl_268435541 (/home/runner/work/Nim/Nim/temp:659:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:694:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp'

Stats

• Created 2023-07-10T13:52:01Z
• Started 2023-07-10T13:52:32
• Finished 2023-07-10T13:52:33
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI134217745 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554448 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI520093705 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI134217749 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217751 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554435 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555833 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555171 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555179 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554449 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554450 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555178 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555175 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555176 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217741 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217743 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI134217743 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217743.node = NNI134217743;
var NNI134217741 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217741.node = NNI134217741;
var NNI33555176 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555176.node = NNI33555176;
NTI33555178.base = NTI33555175;
NTI33555179.base = NTI33555175;
var NNI33555175 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555178, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554450, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554449, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554449, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555179, name: "up", sons: null}]};
NTI33555175.node = NNI33555175;
var NNI33555171 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555171.node = NNI33555171;
NTI33555175.base = NTI33555171;
NTI33555176.base = NTI33555175;
NTI134217741.base = NTI33555176;
NTI134217743.base = NTI134217741;
var NNI33555833 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554450, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554435, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554450, name: "Field2", sons: null}]};
NTI33555833.node = NNI33555833;
var NNI134217751 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217751.node = NNI134217751;
NTI134217751.base = NTI33555176;
var NNI134217749 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217749.node = NNI134217749;
NTI134217749.base = NTI33555176;
var NNI520093705 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554448, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554448, name: "b", sons: null}]};
NTI520093705.node = NNI520093705;
var NNI134217745 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217745.node = NNI134217745;
NTI134217745.base = NTI33555176;
function mnewString(len_33556999) {
        return new Array(len_33556999);
}
function arrayConstr(len_33557310, value_33557311, typ_33557312) {
        var result = new Array(len_33557310);
    for (var i = 0; i < len_33557310; ++i) result[i] = nimCopy(null, value_33557311, typ_33557312);
    return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557264, src_33557265, ti_33557266) {
  var result_33557275 = null;
    switch (ti_33557266.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(isFatPointer_33557255(ti_33557266))) {
      result_33557275 = src_33557265;
      }
      else {
        result_33557275 = [src_33557265[0], src_33557265[1]];
      }
      break;
    case 19:
            if (dest_33557264 === null || dest_33557264 === undefined) {
        dest_33557264 = {};
      }
      else {
        for (var key in dest_33557264) { delete dest_33557264[key]; }
      }
      for (var key in src_33557265) { dest_33557264[key] = src_33557265[key]; }
      result_33557275 = dest_33557264;
      break;
    case 18:
    case 17:
      if (!((ti_33557266.base == null))) {
      result_33557275 = nimCopy(dest_33557264, src_33557265, ti_33557266.base);
      }
      else {
      if ((ti_33557266.kind == 17)) {
      result_33557275 = (dest_33557264 === null || dest_33557264 === undefined) ? {m_type: ti_33557266} : dest_33557264;
      }
      else {
        result_33557275 = (dest_33557264 === null || dest_33557264 === undefined) ? {} : dest_33557264;
      }
      }
      nimCopyAux(result_33557275, src_33557265, ti_33557266.node);
      break;
    case 4:
    case 16:
            if(ArrayBuffer.isView(src_33557265)) { 
        if(dest_33557264 === null || dest_33557264 === undefined || dest_33557264.length != src_33557265.length) {
          dest_33557264 = new src_33557265.constructor(src_33557265);
        } else {
          dest_33557264.set(src_33557265, 0);
        }
        result_33557275 = dest_33557264;
      } else {
        if (src_33557265 === null) {
          result_33557275 = null;
        }
        else {
          if (dest_33557264 === null || dest_33557264 === undefined || dest_33557264.length != src_33557265.length) {
            dest_33557264 = new Array(src_33557265.length);
          }
          result_33557275 = dest_33557264;
          for (var i = 0; i < src_33557265.length; ++i) {
            result_33557275[i] = nimCopy(result_33557275[i], src_33557265[i], ti_33557266.base);
          }
        }
      }
      break;
    case 24:
    case 27:
            if (src_33557265 === null) {
        result_33557275 = null;
      }
      else {
        if (dest_33557264 === null || dest_33557264 === undefined || dest_33557264.length != src_33557265.length) {
          dest_33557264 = new Array(src_33557265.length);
        }
        result_33557275 = dest_33557264;
        for (var i = 0; i < src_33557265.length; ++i) {
          result_33557275[i] = nimCopy(result_33557275[i], src_33557265[i], ti_33557266.base);
        }
      }
      break;
    case 28:
            if (src_33557265 !== null) {
        result_33557275 = src_33557265.slice(0);
      }
      break;
    default: 
      result_33557275 = src_33557265;
      break;
    }
  return result_33557275;
}
function cstrToNimstr(c_33556894) {
      var ln = c_33556894.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_33556894.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_33556894.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_33556897) {
  var result_33556898 = null;
    var res_33556939 = newSeq_33556915((s_33556897).length);
    var i_33556940 = 0;
    var j_33556941 = 0;
    Label1: {
        Label2: while (true) {
        if (!(i_33556940 < (s_33556897).length)) break Label2;
          var c_33556942 = s_33556897[i_33556940];
          if ((c_33556942 < 128)) {
          res_33556939[j_33556941] = String.fromCharCode(c_33556942);
          i_33556940 += 1;
          }
          else {
            var helper_33556955 = newSeq_33556915(0);
            Label3: {
                Label4: while (true) {
                if (!true) break Label4;
                  var code_33556956 = c_33556942.toString(16);
                  if ((((code_33556956) == null ? 0 : (code_33556956).length) == 1)) {
                  helper_33556955.push("%0");;
                  }
                  else {
                  helper_33556955.push("%");;
                  }
                  helper_33556955.push(code_33556956);;
                  i_33556940 += 1;
                  if ((((s_33556897).length <= i_33556940) || (s_33556897[i_33556940] < 128))) {
                  break Label3;
                  }
                  c_33556942 = s_33556897[i_33556940];
                }
            };
++excHandler;
            try {
            res_33556939[j_33556941] = decodeURIComponent(helper_33556955.join(""));
--excHandler;
} catch (EXCEPTION) {
 var prevJSError = lastJSError;
 lastJSError = EXCEPTION;
 --excHandler;
            res_33556939[j_33556941] = helper_33556955.join("");
            lastJSError = prevJSError;
            } finally {
            }
          }
          j_33556941 += 1;
        }
    };
    if (res_33556939.length < j_33556941) { for (var i = res_33556939.length ; i < j_33556941 ; ++i) res_33556939.push(null); }
               else { res_33556939.length = j_33556941; };
    result_33556898 = res_33556939.join("");
  return result_33556898;
}
function raiseException(e_33556649, ename_33556650) {
    e_33556649.name = ename_33556650;
    if ((excHandler == 0)) {
    unhandledException(e_33556649);
    }
    e_33556649.trace = nimCopy(null, rawWriteStackTrace_33556600(), NTI33554449);
    throw e_33556649;
}
function addInt(a_33557046, b_33557047) {
        var result = a_33557046 + b_33557047;
    checkOverflowInt(result);
    return result;
}
function chckRange(i_33557320, a_33557321, b_33557322) {
  var result_33557323 = 0;
  BeforeRet: {
    if (((a_33557321 <= i_33557320) && (i_33557320 <= b_33557322))) {
    result_33557323 = i_33557320;
    break BeforeRet;
    }
    else {
    raiseRangeError();
    }
  };
  return result_33557323;
}
function chckIndx(i_33557315, a_33557316, b_33557317) {
  var result_33557318 = 0;
  BeforeRet: {
    if (((a_33557316 <= i_33557315) && (i_33557315 <= b_33557317))) {
    result_33557318 = i_33557315;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_33557315, a_33557316, b_33557317);
    }
  };
  return result_33557318;
}
function addChar(x_33557411, c_33557412) {
    x_33557411.push(c_33557412);
}
function makeNimstrLit(c_33556891) {
      var result = [];
  for (var i = 0; i < c_33556891.length; ++i) {
    result[i] = c_33556891.charCodeAt(i);
  }
  return result;
}
function eqStrings(a_33557037, b_33557038) {
        if (a_33557037 == b_33557038) return true;
    if (a_33557037 === null && b_33557038.length == 0) return true;
    if (b_33557038 === null && a_33557037.length == 0) return true;
    if ((!a_33557037) || (!b_33557038)) return false;
    var alen = a_33557037.length;
    if (alen != b_33557038.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_33557037[i] != b_33557038[i]) return false;
    return true;
}
function add_33556369(x_33556370, x_33556370_Idx, y_33556371) {
          if (x_33556370[x_33556370_Idx] === null) { x_33556370[x_33556370_Idx] = []; }
      var off = x_33556370[x_33556370_Idx].length;
      x_33556370[x_33556370_Idx].length += y_33556371.length;
      for (var i = 0; i < y_33556371.length; ++i) {
        x_33556370[x_33556370_Idx][off+i] = y_33556371.charCodeAt(i);
      }
}
function isFatPointer_33557255(ti_33557256) {
  var result_33557257 = false;
  BeforeRet: {
    result_33557257 = !((ConstSet1[ti_33557256.base.kind] != undefined));
    break BeforeRet;
  };
  return result_33557257;
}
function nimCopyAux(dest_33557268, src_33557269, n_33557270) {
    switch (n_33557270.kind) {
    case 0:
      break;
    case 1:
            dest_33557268[n_33557270.offset] = nimCopy(dest_33557268[n_33557270.offset], src_33557269[n_33557270.offset], n_33557270.typ);
      break;
    case 2:
          for (var i = 0; i < n_33557270.sons.length; i++) {
      nimCopyAux(dest_33557268, src_33557269, n_33557270.sons[i]);
    }
      break;
    case 3:
            dest_33557268[n_33557270.offset] = nimCopy(dest_33557268[n_33557270.offset], src_33557269[n_33557270.offset], n_33557270.typ);
      for (var i = 0; i < n_33557270.sons.length; ++i) {
        nimCopyAux(dest_33557268, src_33557269, n_33557270.sons[i][1]);
      }
      break;
    }
}
function auxWriteStackTrace_33556504(f_33556505) {
  var result_33556506 = [[]];
    var it_33556514 = f_33556505;
    var i_33556515 = 0;
    var total_33556516 = 0;
    var tempFrames_33556517 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555833);
    Label1: {
        Label2: while (true) {
        if (!(!((it_33556514 == null)) && (i_33556515 <= 63))) break Label2;
          tempFrames_33556517[i_33556515].Field0 = it_33556514.procname;
          tempFrames_33556517[i_33556515].Field1 = it_33556514.line;
          tempFrames_33556517[i_33556515].Field2 = it_33556514.filename;
          i_33556515 += 1;
          total_33556516 += 1;
          it_33556514 = it_33556514.prev;
        }
    };
    Label3: {
        Label4: while (true) {
        if (!!((it_33556514 == null))) break Label4;
          total_33556516 += 1;
          it_33556514 = it_33556514.prev;
        }
    };
    result_33556506[0] = nimCopy(null, [], NTI33554449);
    if (!((total_33556516 == i_33556515))) {
    result_33556506[0].push.apply(result_33556506[0], [40]);;
    result_33556506[0].push.apply(result_33556506[0], HEX24_369098760((total_33556516 - i_33556515)));;
    result_33556506[0].push.apply(result_33556506[0], [32,99,97,108,108,115,32,111,109,105,116,116,101,100,41,32,46,46,46,10]);;
    }
    Label5: {
      var j_33556550 = 0;
      var colontmp__520093771 = 0;
      colontmp__520093771 = (i_33556515 - 1);
      var res_520093773 = colontmp__520093771;
      Label6: {
          Label7: while (true) {
          if (!(0 <= res_520093773)) break Label7;
            j_33556550 = res_520093773;
            result_33556506[0].push.apply(result_33556506[0], cstrToNimstr(tempFrames_33556517[j_33556550].Field2));;
            if ((0 < tempFrames_33556517[j_33556550].Field1)) {
            result_33556506[0].push.apply(result_33556506[0], [40]);;
            addInt_301990129(result_33556506, 0, tempFrames_33556517[j_33556550].Field1);
            if (false) {
            result_33556506[0].push.apply(result_33556506[0], [44,32]);;
            addInt_301990129(result_33556506, 0, 0);
            }
            result_33556506[0].push.apply(result_33556506[0], [41]);;
            }
            result_33556506[0].push.apply(result_33556506[0], [32,97,116,32]);;
            add_33556369(result_33556506, 0, tempFrames_33556517[j_33556550].Field0);
            result_33556506[0].push.apply(result_33556506[0], [10]);;
            res_520093773 -= 1;
          }
      };
    };
  return result_33556506[0];
}
function rawWriteStackTrace_33556600() {
  var result_33556601 = [];
    if (!((framePtr == null))) {
    result_33556601 = nimCopy(null, ([84,114,97,99,101,98,97,99,107,32,40,109,111,115,116,32,114,101,99,101,110,116,32,99,97,108,108,32,108,97,115,116,41,10] || []).concat(auxWriteStackTrace_33556504(framePtr) || []), NTI33554449);
    }
    else {
      result_33556601 = nimCopy(null, [78,111,32,115,116,97,99,107,32,116,114,97,99,101,98,97,99,107,32,97,118,97,105,108,97,98,108,101,10], NTI33554449);
    }
  return result_33556601;
}
function newSeq_33556915(len_33556917) {
  var result_33556918 = [];
    result_33556918 = new Array(len_33556917); for (var i = 0 ; i < len_33556917 ; ++i) { result_33556918[i] = null; }
  return result_33556918;
}
function unhandledException(e_33556645) {
    var buf_33556646 = [[]];
    if (!(((e_33556645.message).length == 0))) {
    buf_33556646[0].push.apply(buf_33556646[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110,58,32]);;
    buf_33556646[0].push.apply(buf_33556646[0], e_33556645.message);;
    }
    else {
    buf_33556646[0].push.apply(buf_33556646[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110]);;
    }
    buf_33556646[0].push.apply(buf_33556646[0], [32,91]);;
    add_33556369(buf_33556646, 0, e_33556645.name);
    buf_33556646[0].push.apply(buf_33556646[0], [93,10]);;
    buf_33556646[0].push.apply(buf_33556646[0], rawWriteStackTrace_33556600());;
    var cbuf_33556647 = toJSStr(buf_33556646[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_33556647);
  }
  else {
    throw cbuf_33556647;
  }
}
function raiseOverflow() {
    raiseException({message: [111,118,101,114,45,32,111,114,32,117,110,100,101,114,102,108,111,119], parent: null, m_type: NTI134217743, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33557044) {
        if (a_33557044 > 2147483647 || a_33557044 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
    raiseException({message: [118,97,108,117,101,32,111,117,116,32,111,102,32,114,97,110,103,101], parent: null, m_type: NTI134217751, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_301990090(result_301990092, result_301990092_Idx, x_301990093, start_301990094, n_301990095) {
    var Temporary1;
    var old_301990096 = (result_301990092[result_301990092_Idx]).length;
    if (result_301990092[result_301990092_Idx].length < (Temporary1 = chckRange(addInt(old_301990096, n_301990095), 0, 2147483647), Temporary1)) { for (var i = result_301990092[result_301990092_Idx].length; i < Temporary1; ++i) result_301990092[result_301990092_Idx].push(0); }
         else {result_301990092[result_301990092_Idx].length = Temporary1; };
    Label2: {
      var iHEX60gensym4_301990110 = 0;
      var i_520093766 = 0;
      Label3: {
          Label4: while (true) {
          if (!(i_520093766 < n_301990095)) break Label4;
            iHEX60gensym4_301990110 = i_520093766;
            result_301990092[result_301990092_Idx][chckIndx(addInt(old_301990096, iHEX60gensym4_301990110), 0, (result_301990092[result_301990092_Idx]).length - 1)] = x_301990093.charCodeAt(chckIndx(addInt(start_301990094, iHEX60gensym4_301990110), 0, (x_301990093).length - 1));
            i_520093766 = addInt(i_520093766, 1);
          }
      };
    };
}
function addChars_301990086(result_301990088, result_301990088_Idx, x_301990089) {
    addChars_301990090(result_301990088, result_301990088_Idx, x_301990089, 0, ((x_301990089) == null ? 0 : (x_301990089).length));
}
function addInt_301990111(result_301990112, result_301990112_Idx, x_301990113) {
    addChars_301990086(result_301990112, result_301990112_Idx, ((x_301990113) + ""));
}
function addInt_301990129(result_301990130, result_301990130_Idx, x_301990131) {
    addInt_301990111(result_301990130, result_301990130_Idx, BigInt(x_301990131));
}
function HEX24_369098760(x_369098761) {
  var result_369098762 = [[]];
    addInt_301990129(result_369098762, 0, x_369098761);
  return result_369098762[0];
}
function raiseIndexError(i_33556808, a_33556809, b_33556810) {
    var Temporary1;
    if ((b_33556810 < a_33556809)) {
    Temporary1 = [105,110,100,101,120,32,111,117,116,32,111,102,32,98,111,117,110,100,115,44,32,116,104,101,32,99,111,110,116,97,105,110,101,114,32,105,115,32,101,109,112,116,121];
    }
    else {
    Temporary1 = ([105,110,100,101,120,32] || []).concat(HEX24_369098760(i_33556808) || [],[32,110,111,116,32,105,110,32] || [],HEX24_369098760(a_33556809) || [],[32,46,46,32] || [],HEX24_369098760(b_33556810) || []);
    }
    raiseException({message: nimCopy(null, Temporary1, NTI33554449), parent: null, m_type: NTI134217749, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_520093744(s_520093748, value_520093749) {
  var result_520093750 = false;
    result_520093750 = ((s_520093748.a <= value_520093749) && (value_520093749 <= s_520093748.b));
  return result_520093750;
}
function HEX2EHEX2E_520093699(a_520093702, b_520093703) {
  var result_520093706 = ({a: 0, b: 0});
    result_520093706 = nimCopy(result_520093706, {a: a_520093702, b: b_520093703}, NTI520093705);
  return result_520093706;
}
function sysFatal_268435501(message_268435504) {
    raiseException({message: nimCopy(null, message_268435504, NTI33554449), m_type: NTI134217745, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_268435499(msg_268435500) {
    sysFatal_268435501(msg_268435500);
}
function failedAssertImpl_268435541(msg_268435542) {
    raiseAssert_268435499(msg_268435542);
}
          var Temporary5;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_520093697 = [[]];
Label1: {
  var c_520093698 = [0];
  var i_520093759 = 0;
  var L_520093760 = 5;
  Label2: {
      Label3: while (true) {
      if (!(i_520093759 < L_520093760)) break Label3;
        c_520093698[0] = [49,95,50,95,51][chckIndx(i_520093759, 0, ([49,95,50,95,51]).length - 1)];
        Label4: {
          if (contains_520093744(HEX2EHEX2E_520093699(48, 57), c_520093698[0])) {
          Temporary5 = c_520093698[0];
          }
          else {
            break Label4;
          }
        };
        addChar(s_520093697[0], Temporary5);;
        i_520093759 = addInt(i_520093759, 1);
        if (!((5 == L_520093760))) {
        failedAssertImpl_268435541(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-#devel/lib/system/iterators.nim(264, 11) `len(a) == L` the length of the string changed while iterating over it"));
        }
      }
  };
};
if (!(eqStrings(s_520093697[0], [49,50,51]))) {
failedAssertImpl_268435541([47,104,111,109,101,47,114,117,110,110,101,114,47,119,111,114,107,47,78,105,109,47,78,105,109,47,116,101,109,112,46,110,105,109,40,51,44,32,49,41,32,96,115,32,61,61,32,34,49,50,51,34,96,32]);
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

stable :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:520
    throw new Error(cbuf_33556665);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 10) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:520:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:284:5)
    at sysFatal_218103842 (/home/runner/work/Nim/Nim/temp:629:5)
    at raiseAssert_218103840 (/home/runner/work/Nim/Nim/temp:635:5)
    at failedAssertImpl_218103864 (/home/runner/work/Nim/Nim/temp:641:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:676:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp '

Stats

• Created 2023-07-10T13:52:01Z
• Started 2023-07-10T13:52:33
• Finished 2023-07-10T13:52:34
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI33555124 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554438 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI452984841 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555128 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555130 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554456 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555916 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555083 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555165 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554439 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554440 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555164 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555112 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555113 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555120 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555122 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI33555122 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555122.node = NNI33555122;
var NNI33555120 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555120.node = NNI33555120;
var NNI33555113 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555113.node = NNI33555113;
NTI33555164.base = NTI33555112;
NTI33555165.base = NTI33555112;
var NNI33555112 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555164, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554440, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554439, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554439, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555165, name: "up", sons: null}]};
NTI33555112.node = NNI33555112;
var NNI33555083 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555083.node = NNI33555083;
NTI33555112.base = NTI33555083;
NTI33555113.base = NTI33555112;
NTI33555120.base = NTI33555113;
NTI33555122.base = NTI33555120;
var NNI33555916 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554440, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554456, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554440, name: "Field2", sons: null}]};
NTI33555916.node = NNI33555916;
var NNI33555130 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555130.node = NNI33555130;
NTI33555130.base = NTI33555113;
var NNI33555128 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555128.node = NNI33555128;
NTI33555128.base = NTI33555113;
var NNI452984841 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554438, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554438, name: "b", sons: null}]};
NTI452984841.node = NNI452984841;
var NNI33555124 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555124.node = NNI33555124;
NTI33555124.base = NTI33555113;
function makeNimstrLit(c_33556801) {
      var result = [];
  for (var i = 0; i < c_33556801.length; ++i) {
    result[i] = c_33556801.charCodeAt(i);
  }
  return result;
}
function mnewString(len_33556893) {
        return new Array(len_33556893);
}
function arrayConstr(len_33557179, value_33557180, typ_33557181) {
        var result = new Array(len_33557179);
    for (var i = 0; i < len_33557179; ++i) result[i] = nimCopy(null, value_33557180, typ_33557181);
    return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557140, src_33557141, ti_33557142) {
  var result_33557151 = null;
    switch (ti_33557142.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(isFatPointer_33557131(ti_33557142))) {
      result_33557151 = src_33557141;
      }
      else {
        result_33557151 = [src_33557141[0], src_33557141[1]];
      }
      break;
    case 19:
            if (dest_33557140 === null || dest_33557140 === undefined) {
        dest_33557140 = {};
      }
      else {
        for (var key in dest_33557140) { delete dest_33557140[key]; }
      }
      for (var key in src_33557141) { dest_33557140[key] = src_33557141[key]; }
      result_33557151 = dest_33557140;
      break;
    case 18:
    case 17:
      if (!((ti_33557142.base == null))) {
      result_33557151 = nimCopy(dest_33557140, src_33557141, ti_33557142.base);
      }
      else {
      if ((ti_33557142.kind == 17)) {
      result_33557151 = (dest_33557140 === null || dest_33557140 === undefined) ? {m_type: ti_33557142} : dest_33557140;
      }
      else {
        result_33557151 = (dest_33557140 === null || dest_33557140 === undefined) ? {} : dest_33557140;
      }
      }
      nimCopyAux(result_33557151, src_33557141, ti_33557142.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_33557141 === null) {
        result_33557151 = null;
      }
      else {
        if (dest_33557140 === null || dest_33557140 === undefined || dest_33557140.length != src_33557141.length) {
          dest_33557140 = new Array(src_33557141.length);
        }
        result_33557151 = dest_33557140;
        for (var i = 0; i < src_33557141.length; ++i) {
          result_33557151[i] = nimCopy(result_33557151[i], src_33557141[i], ti_33557142.base);
        }
      }
      break;
    case 28:
            if (src_33557141 !== null) {
        result_33557151 = src_33557141.slice(0);
      }
      break;
    default: 
      result_33557151 = src_33557141;
      break;
    }
  return result_33557151;
}
function cstrToNimstr(c_33556804) {
      var ln = c_33556804.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_33556804.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_33556804.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_33556807) {
                    var Temporary5;
  var result_33556808 = null;
    var res_33556842 = newSeq_33556825((s_33556807).length);
    var i_33556843 = 0;
    var j_33556844 = 0;
    Label1: do {
        Label2: while (true) {
        if (!(i_33556843 < (s_33556807).length)) break Label2;
          var c_33556845 = s_33556807[i_33556843];
          if ((c_33556845 < 128)) {
          res_33556842[j_33556844] = String.fromCharCode(c_33556845);
          i_33556843 += 1;
          }
          else {
            var helper_33556857 = newSeq_33556825(0);
            Label3: do {
                Label4: while (true) {
                if (!true) break Label4;
                  var code_33556858 = c_33556845.toString(16);
                  if ((((code_33556858) == null ? 0 : (code_33556858).length) == 1)) {
                  helper_33556857.push("%0");;
                  }
                  else {
                  helper_33556857.push("%");;
                  }
                  helper_33556857.push(code_33556858);;
                  i_33556843 += 1;
                    if (((s_33556807).length <= i_33556843)) Temporary5 = true; else {                      Temporary5 = (s_33556807[i_33556843] < 128);                    }                  if (Temporary5) {
                  break Label3;
                  }
                  c_33556845 = s_33556807[i_33556843];
                }
            } while (false);
++excHandler;
            try {
            res_33556842[j_33556844] = decodeURIComponent(helper_33556857.join(""));
--excHandler;
} catch (EXCEPTION) {
 var prevJSError = lastJSError;
 lastJSError = EXCEPTION;
 --excHandler;
            res_33556842[j_33556844] = helper_33556857.join("");
            lastJSError = prevJSError;
            } finally {
            }
          }
          j_33556844 += 1;
        }
    } while (false);
    if (res_33556842.length < j_33556844) { for (var i = res_33556842.length ; i < j_33556844 ; ++i) res_33556842.push(null); }
               else { res_33556842.length = j_33556844; };
    result_33556808 = res_33556842.join("");
  return result_33556808;
}
function raiseException(e_33556667, ename_33556668) {
    e_33556667.name = ename_33556668;
    if ((excHandler == 0)) {
    unhandledException(e_33556667);
    }
    e_33556667.trace = nimCopy(null, rawWriteStackTrace_33556631(), NTI33554439);
    throw e_33556667;
}
function addInt(a_33556940, b_33556941) {
        var result = a_33556940 + b_33556941;
    checkOverflowInt(result);
    return result;
}
function chckRange(i_33557189, a_33557190, b_33557191) {
      var Temporary1;
  var result_33557192 = 0;
  BeforeRet: do {
      if (!(a_33557190 <= i_33557189)) Temporary1 = false; else {        Temporary1 = (i_33557189 <= b_33557191);      }    if (Temporary1) {
    result_33557192 = i_33557189;
    break BeforeRet;
    }
    else {
    raiseRangeError();
    }
  } while (false);
  return result_33557192;
}
function chckIndx(i_33557184, a_33557185, b_33557186) {
      var Temporary1;
  var result_33557187 = 0;
  BeforeRet: do {
      if (!(a_33557185 <= i_33557184)) Temporary1 = false; else {        Temporary1 = (i_33557184 <= b_33557186);      }    if (Temporary1) {
    result_33557187 = i_33557184;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_33557184, a_33557185, b_33557186);
    }
  } while (false);
  return result_33557187;
}
function addChar(x_33557255, c_33557256) {
    x_33557255.push(c_33557256);
}
function eqStrings(a_33556931, b_33556932) {
        if (a_33556931 == b_33556932) return true;
    if (a_33556931 === null && b_33556932.length == 0) return true;
    if (b_33556932 === null && a_33556931.length == 0) return true;
    if ((!a_33556931) || (!b_33556932)) return false;
    var alen = a_33556931.length;
    if (alen != b_33556932.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_33556931[i] != b_33556932[i]) return false;
    return true;
}
function add_33556419(x_33556420, x_33556420_Idx, y_33556421) {
          if (x_33556420[x_33556420_Idx] === null) { x_33556420[x_33556420_Idx] = []; }
      var off = x_33556420[x_33556420_Idx].length;
      x_33556420[x_33556420_Idx].length += y_33556421.length;
      for (var i = 0; i < y_33556421.length; ++i) {
        x_33556420[x_33556420_Idx][off+i] = y_33556421.charCodeAt(i);
      }
}
function isFatPointer_33557131(ti_33557132) {
  var result_33557133 = false;
  BeforeRet: do {
    result_33557133 = !((ConstSet1[ti_33557132.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_33557133;
}
function nimCopyAux(dest_33557144, src_33557145, n_33557146) {
    switch (n_33557146.kind) {
    case 0:
      break;
    case 1:
            dest_33557144[n_33557146.offset] = nimCopy(dest_33557144[n_33557146.offset], src_33557145[n_33557146.offset], n_33557146.typ);
      break;
    case 2:
          for (var i = 0; i < n_33557146.sons.length; i++) {
      nimCopyAux(dest_33557144, src_33557145, n_33557146.sons[i]);
    }
      break;
    case 3:
            dest_33557144[n_33557146.offset] = nimCopy(dest_33557144[n_33557146.offset], src_33557145[n_33557146.offset], n_33557146.typ);
      for (var i = 0; i < n_33557146.sons.length; ++i) {
        nimCopyAux(dest_33557144, src_33557145, n_33557146.sons[i][1]);
      }
      break;
    }
}
function auxWriteStackTrace_33556559(f_33556560) {
          var Temporary3;
  var result_33556561 = [[]];
    var it_33556569 = f_33556560;
    var i_33556570 = 0;
    var total_33556571 = 0;
    var tempFrames_33556572 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555916);
    Label1: do {
        Label2: while (true) {
          if (!!((it_33556569 == null))) Temporary3 = false; else {            Temporary3 = (i_33556570 <= 63);          }        if (!Temporary3) break Label2;
          tempFrames_33556572[i_33556570].Field0 = it_33556569.procname;
          tempFrames_33556572[i_33556570].Field1 = it_33556569.line;
          tempFrames_33556572[i_33556570].Field2 = it_33556569.filename;
          i_33556570 += 1;
          total_33556571 += 1;
          it_33556569 = it_33556569.prev;
        }
    } while (false);
    Label4: do {
        Label5: while (true) {
        if (!!((it_33556569 == null))) break Label5;
          total_33556571 += 1;
          it_33556569 = it_33556569.prev;
        }
    } while (false);
    result_33556561[0] = nimCopy(null, [], NTI33554439);
    if (!((total_33556571 == i_33556570))) {
    result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("("));;
    result_33556561[0].push.apply(result_33556561[0], HEX24_335544323((total_33556571 - i_33556570)));;
    result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(" calls omitted) ...\x0A"));;
    }
    Label6: do {
      var j_33556602 = 0;
      var colontmp__452984892 = 0;
      colontmp__452984892 = (i_33556570 - 1);
      var res_452984894 = colontmp__452984892;
      Label7: do {
          Label8: while (true) {
          if (!(0 <= res_452984894)) break Label8;
            j_33556602 = res_452984894;
            result_33556561[0].push.apply(result_33556561[0], cstrToNimstr(tempFrames_33556572[j_33556602].Field2));;
            if ((0 < tempFrames_33556572[j_33556602].Field1)) {
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("("));;
            addInt_251658457(result_33556561, 0, tempFrames_33556572[j_33556602].Field1);
            if (false) {
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(", "));;
            addInt_251658457(result_33556561, 0, 0);
            }
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(")"));;
            }
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(" at "));;
            add_33556419(result_33556561, 0, tempFrames_33556572[j_33556602].Field0);
            result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("\x0A"));;
            res_452984894 -= 1;
          }
      } while (false);
    } while (false);
  return result_33556561[0];
}
function rawWriteStackTrace_33556631() {
  var result_33556632 = [];
    if (!((framePtr == null))) {
    result_33556632 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(auxWriteStackTrace_33556559(framePtr) || []), NTI33554439);
    }
    else {
      result_33556632 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI33554439);
    }
  return result_33556632;
}
function newSeq_33556825(len_33556827) {
  var result_33556828 = [];
    result_33556828 = new Array(len_33556827); for (var i = 0 ; i < len_33556827 ; ++i) { result_33556828[i] = null; }
  return result_33556828;
}
function unhandledException(e_33556663) {
    var buf_33556664 = [[]];
    if (!(((e_33556663.message).length == 0))) {
    buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("Error: unhandled exception: "));;
    buf_33556664[0].push.apply(buf_33556664[0], e_33556663.message);;
    }
    else {
    buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("Error: unhandled exception"));;
    }
    buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit(" ["));;
    add_33556419(buf_33556664, 0, e_33556663.name);
    buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("]\x0A"));;
    buf_33556664[0].push.apply(buf_33556664[0], rawWriteStackTrace_33556631());;
    var cbuf_33556665 = toJSStr(buf_33556664[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_33556665);
  }
  else {
    throw cbuf_33556665;
  }
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI33555122, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33556938) {
        if (a_33556938 > 2147483647 || a_33556938 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
    raiseException({message: makeNimstrLit("value out of range"), parent: null, m_type: NTI33555130, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_251658415(result_251658417, result_251658417_Idx, x_251658418, start_251658419, n_251658420) {
    var old_251658421 = (result_251658417[result_251658417_Idx]).length;
    (result_251658417[result_251658417_Idx].length = chckRange(addInt(old_251658421, n_251658420), 0, 2147483647));
    Label1: do {
      var iHEX60gensym4_251658435 = 0;
      var i_452984887 = 0;
      Label2: do {
          Label3: while (true) {
          if (!(i_452984887 < n_251658420)) break Label3;
            iHEX60gensym4_251658435 = i_452984887;
            result_251658417[result_251658417_Idx][chckIndx(addInt(old_251658421, iHEX60gensym4_251658435), 0, (result_251658417[result_251658417_Idx]).length - 1)] = x_251658418.charCodeAt(chckIndx(addInt(start_251658419, iHEX60gensym4_251658435), 0, (x_251658418).length - 1));
            i_452984887 = addInt(i_452984887, 1);
          }
      } while (false);
    } while (false);
}
function addChars_251658411(result_251658413, result_251658413_Idx, x_251658414) {
    addChars_251658415(result_251658413, result_251658413_Idx, x_251658414, 0, ((x_251658414) == null ? 0 : (x_251658414).length));
}
function addInt_251658436(result_251658437, result_251658437_Idx, x_251658438) {
    addChars_251658411(result_251658437, result_251658437_Idx, ((x_251658438) + ""));
}
function addInt_251658457(result_251658458, result_251658458_Idx, x_251658459) {
    addInt_251658436(result_251658458, result_251658458_Idx, x_251658459);
}
function HEX24_335544323(x_335544324) {
  var result_335544325 = [[]];
    addInt_251658457(result_335544325, 0, x_335544324);
  return result_335544325[0];
}
function raiseIndexError(i_33556754, a_33556755, b_33556756) {
    var Temporary1;
    if ((b_33556756 < a_33556755)) {
    Temporary1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Temporary1 = (makeNimstrLit("index ") || []).concat(HEX24_335544323(i_33556754) || [],makeNimstrLit(" not in ") || [],HEX24_335544323(a_33556755) || [],makeNimstrLit(" .. ") || [],HEX24_335544323(b_33556756) || []);
    }
    raiseException({message: nimCopy(null, Temporary1, NTI33554439), parent: null, m_type: NTI33555128, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_452984865(s_452984869, value_452984870) {
  var result_452984871 = false;
    result_452984871 = ((s_452984869.a <= value_452984870) && (value_452984870 <= s_452984869.b));
  return result_452984871;
}
function HEX2EHEX2E_452984835(a_452984838, b_452984839) {
  var result_452984842 = ({a: 0, b: 0});
    result_452984842 = nimCopy(result_452984842, {a: a_452984838, b: b_452984839}, NTI452984841);
  return result_452984842;
}
function sysFatal_218103842(message_218103845) {
    raiseException({message: nimCopy(null, message_218103845, NTI33554439), m_type: NTI33555124, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_218103840(msg_218103841) {
    sysFatal_218103842(msg_218103841);
}
function failedAssertImpl_218103864(msg_218103865) {
    raiseAssert_218103840(msg_218103865);
}
          var Temporary5;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_452984833 = [[]];
Label1: do {
  var c_452984834 = [0];
  var i_452984880 = 0;
  var L_452984881 = 5;
  Label2: do {
      Label3: while (true) {
      if (!(i_452984880 < L_452984881)) break Label3;
        c_452984834[0] = makeNimstrLit("1_2_3")[chckIndx(i_452984880, 0, (makeNimstrLit("1_2_3")).length - 1)];
        Label4: do {
          if (contains_452984865(HEX2EHEX2E_452984835(48, 57), c_452984834[0])) {
          Temporary5 = c_452984834[0];
          }
          else {
            break Label4;
          }
        } while (false);
        addChar(s_452984833[0], Temporary5);;
        i_452984880 = addInt(i_452984880, 1);
        if (!((5 == L_452984881))) {
        failedAssertImpl_218103864(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.6.14/lib/system/iterators.nim(258, 11) `len(a) == L` the length of the string changed while iterating over it"));
        }
      }
  } while (false);
} while (false);
if (!(eqStrings(s_452984833[0], makeNimstrLit("123")))) {
failedAssertImpl_218103864(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.6.0 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:524
    throw new Error(cbuf_33556666);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 10) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:524:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:288:5)
    at sysFatal_218103842 (/home/runner/work/Nim/Nim/temp:633:5)
    at raiseAssert_218103840 (/home/runner/work/Nim/Nim/temp:639:5)
    at failedAssertImpl_218103864 (/home/runner/work/Nim/Nim/temp:645:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:680:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp '

Stats

• Created 2023-07-10T13:52:01Z
• Started 2023-07-10T13:52:37
• Finished 2023-07-10T13:52:37
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI33555124 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554438 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI436207625 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555128 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555130 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554456 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555919 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555083 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555165 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554439 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554440 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555164 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555112 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555113 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555120 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555122 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI33555122 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555122.node = NNI33555122;
var NNI33555120 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555120.node = NNI33555120;
var NNI33555113 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555113.node = NNI33555113;
NTI33555164.base = NTI33555112;
NTI33555165.base = NTI33555112;
var NNI33555112 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555164, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554440, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554439, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554439, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555165, name: "up", sons: null}]};
NTI33555112.node = NNI33555112;
var NNI33555083 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555083.node = NNI33555083;
NTI33555112.base = NTI33555083;
NTI33555113.base = NTI33555112;
NTI33555120.base = NTI33555113;
NTI33555122.base = NTI33555120;
var NNI33555919 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554440, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554456, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554440, name: "Field2", sons: null}]};
NTI33555919.node = NNI33555919;
var NNI33555130 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555130.node = NNI33555130;
NTI33555130.base = NTI33555113;
var NNI33555128 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555128.node = NNI33555128;
NTI33555128.base = NTI33555113;
var NNI436207625 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554438, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554438, name: "b", sons: null}]};
NTI436207625.node = NNI436207625;
var NNI33555124 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555124.node = NNI33555124;
NTI33555124.base = NTI33555113;
function makeNimstrLit(c_33556802) {
      var result = [];
  for (var i = 0; i < c_33556802.length; ++i) {
    result[i] = c_33556802.charCodeAt(i);
  }
  return result;
}
function mnewString(len_33556894) {
        return new Array(len_33556894);
}
function arrayConstr(len_33557180, value_33557181, typ_33557182) {
        var result = new Array(len_33557180);
    for (var i = 0; i < len_33557180; ++i) result[i] = nimCopy(null, value_33557181, typ_33557182);
    return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557141, src_33557142, ti_33557143) {
  var result_33557152 = null;
    switch (ti_33557143.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(isFatPointer_33557132(ti_33557143))) {
      result_33557152 = src_33557142;
      }
      else {
        result_33557152 = [src_33557142[0], src_33557142[1]];
      }
      break;
    case 19:
            if (dest_33557141 === null || dest_33557141 === undefined) {
        dest_33557141 = {};
      }
      else {
        for (var key in dest_33557141) { delete dest_33557141[key]; }
      }
      for (var key in src_33557142) { dest_33557141[key] = src_33557142[key]; }
      result_33557152 = dest_33557141;
      break;
    case 18:
    case 17:
      if (!((ti_33557143.base == null))) {
      result_33557152 = nimCopy(dest_33557141, src_33557142, ti_33557143.base);
      }
      else {
      if ((ti_33557143.kind == 17)) {
      result_33557152 = (dest_33557141 === null || dest_33557141 === undefined) ? {m_type: ti_33557143} : dest_33557141;
      }
      else {
        result_33557152 = (dest_33557141 === null || dest_33557141 === undefined) ? {} : dest_33557141;
      }
      }
      nimCopyAux(result_33557152, src_33557142, ti_33557143.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_33557142 === null) {
        result_33557152 = null;
      }
      else {
        if (dest_33557141 === null || dest_33557141 === undefined || dest_33557141.length != src_33557142.length) {
          dest_33557141 = new Array(src_33557142.length);
        }
        result_33557152 = dest_33557141;
        for (var i = 0; i < src_33557142.length; ++i) {
          result_33557152[i] = nimCopy(result_33557152[i], src_33557142[i], ti_33557143.base);
        }
      }
      break;
    case 28:
            if (src_33557142 !== null) {
        result_33557152 = src_33557142.slice(0);
      }
      break;
    default: 
      result_33557152 = src_33557142;
      break;
    }
  return result_33557152;
}
function cstrToNimstr(c_33556805) {
      var ln = c_33556805.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_33556805.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_33556805.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_33556808) {
                    var Temporary5;
            var Temporary7;
  var result_33556809 = null;
    var res_33556843 = newSeq_33556826((s_33556808).length);
    var i_33556844 = 0;
    var j_33556845 = 0;
    Label1: do {
        Label2: while (true) {
        if (!(i_33556844 < (s_33556808).length)) break Label2;
          var c_33556846 = s_33556808[i_33556844];
          if ((c_33556846 < 128)) {
          res_33556843[j_33556845] = String.fromCharCode(c_33556846);
          i_33556844 += 1;
          }
          else {
            var helper_33556858 = newSeq_33556826(0);
            Label3: do {
                Label4: while (true) {
                if (!true) break Label4;
                  var code_33556859 = c_33556846.toString(16);
                  if ((((code_33556859) == null ? 0 : (code_33556859).length) == 1)) {
                  helper_33556858.push("%0");;
                  }
                  else {
                  helper_33556858.push("%");;
                  }
                  helper_33556858.push(code_33556859);;
                  i_33556844 += 1;
                    if (((s_33556808).length <= i_33556844)) Temporary5 = true; else {                      Temporary5 = (s_33556808[i_33556844] < 128);                    }                  if (Temporary5) {
                  break Label3;
                  }
                  c_33556846 = s_33556808[i_33556844];
                }
            } while (false);
++excHandler;
            Temporary7 = framePtr;
            try {
            res_33556843[j_33556845] = decodeURIComponent(helper_33556858.join(""));
--excHandler;
} catch (EXCEPTION) {
 var prevJSError = lastJSError;
 lastJSError = EXCEPTION;
 --excHandler;
            framePtr = Temporary7;
            res_33556843[j_33556845] = helper_33556858.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Temporary7;
            }
          }
          j_33556845 += 1;
        }
    } while (false);
    if (res_33556843.length < j_33556845) { for (var i = res_33556843.length ; i < j_33556845 ; ++i) res_33556843.push(null); }
               else { res_33556843.length = j_33556845; };
    result_33556809 = res_33556843.join("");
  return result_33556809;
}
function raiseException(e_33556668, ename_33556669) {
    e_33556668.name = ename_33556669;
    if ((excHandler == 0)) {
    unhandledException(e_33556668);
    }
    e_33556668.trace = nimCopy(null, rawWriteStackTrace_33556632(), NTI33554439);
    throw e_33556668;
}
function addInt(a_33556941, b_33556942) {
        var result = a_33556941 + b_33556942;
    checkOverflowInt(result);
    return result;
}
function chckRange(i_33557190, a_33557191, b_33557192) {
      var Temporary1;
  var result_33557193 = 0;
  BeforeRet: do {
      if (!(a_33557191 <= i_33557190)) Temporary1 = false; else {        Temporary1 = (i_33557190 <= b_33557192);      }    if (Temporary1) {
    result_33557193 = i_33557190;
    break BeforeRet;
    }
    else {
    raiseRangeError();
    }
  } while (false);
  return result_33557193;
}
function chckIndx(i_33557185, a_33557186, b_33557187) {
      var Temporary1;
  var result_33557188 = 0;
  BeforeRet: do {
      if (!(a_33557186 <= i_33557185)) Temporary1 = false; else {        Temporary1 = (i_33557185 <= b_33557187);      }    if (Temporary1) {
    result_33557188 = i_33557185;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_33557185, a_33557186, b_33557187);
    }
  } while (false);
  return result_33557188;
}
function addChar(x_33557256, c_33557257) {
    x_33557256.push(c_33557257);
}
function eqStrings(a_33556932, b_33556933) {
        if (a_33556932 == b_33556933) return true;
    if (a_33556932 === null && b_33556933.length == 0) return true;
    if (b_33556933 === null && a_33556932.length == 0) return true;
    if ((!a_33556932) || (!b_33556933)) return false;
    var alen = a_33556932.length;
    if (alen != b_33556933.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_33556932[i] != b_33556933[i]) return false;
    return true;
}
function add_33556420(x_33556421, x_33556421_Idx, y_33556422) {
          if (x_33556421[x_33556421_Idx] === null) { x_33556421[x_33556421_Idx] = []; }
      var off = x_33556421[x_33556421_Idx].length;
      x_33556421[x_33556421_Idx].length += y_33556422.length;
      for (var i = 0; i < y_33556422.length; ++i) {
        x_33556421[x_33556421_Idx][off+i] = y_33556422.charCodeAt(i);
      }
}
function isFatPointer_33557132(ti_33557133) {
  var result_33557134 = false;
  BeforeRet: do {
    result_33557134 = !((ConstSet1[ti_33557133.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_33557134;
}
function nimCopyAux(dest_33557145, src_33557146, n_33557147) {
    switch (n_33557147.kind) {
    case 0:
      break;
    case 1:
            dest_33557145[n_33557147.offset] = nimCopy(dest_33557145[n_33557147.offset], src_33557146[n_33557147.offset], n_33557147.typ);
      break;
    case 2:
          for (var i = 0; i < n_33557147.sons.length; i++) {
      nimCopyAux(dest_33557145, src_33557146, n_33557147.sons[i]);
    }
      break;
    case 3:
            dest_33557145[n_33557147.offset] = nimCopy(dest_33557145[n_33557147.offset], src_33557146[n_33557147.offset], n_33557147.typ);
      for (var i = 0; i < n_33557147.sons.length; ++i) {
        nimCopyAux(dest_33557145, src_33557146, n_33557147.sons[i][1]);
      }
      break;
    }
}
function auxWriteStackTrace_33556560(f_33556561) {
          var Temporary3;
  var result_33556562 = [[]];
    var it_33556570 = f_33556561;
    var i_33556571 = 0;
    var total_33556572 = 0;
    var tempFrames_33556573 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555919);
    Label1: do {
        Label2: while (true) {
          if (!!((it_33556570 == null))) Temporary3 = false; else {            Temporary3 = (i_33556571 <= 63);          }        if (!Temporary3) break Label2;
          tempFrames_33556573[i_33556571].Field0 = it_33556570.procname;
          tempFrames_33556573[i_33556571].Field1 = it_33556570.line;
          tempFrames_33556573[i_33556571].Field2 = it_33556570.filename;
          i_33556571 += 1;
          total_33556572 += 1;
          it_33556570 = it_33556570.prev;
        }
    } while (false);
    Label4: do {
        Label5: while (true) {
        if (!!((it_33556570 == null))) break Label5;
          total_33556572 += 1;
          it_33556570 = it_33556570.prev;
        }
    } while (false);
    result_33556562[0] = nimCopy(null, [], NTI33554439);
    if (!((total_33556572 == i_33556571))) {
    result_33556562[0].push.apply(result_33556562[0], makeNimstrLit("("));;
    result_33556562[0].push.apply(result_33556562[0], HEX24_318767107((total_33556572 - i_33556571)));;
    result_33556562[0].push.apply(result_33556562[0], makeNimstrLit(" calls omitted) ...\x0A"));;
    }
    Label6: do {
      var j_33556603 = 0;
      var colontmp__436207676 = 0;
      colontmp__436207676 = (i_33556571 - 1);
      var res_436207678 = colontmp__436207676;
      Label7: do {
          Label8: while (true) {
          if (!(0 <= res_436207678)) break Label8;
            j_33556603 = res_436207678;
            result_33556562[0].push.apply(result_33556562[0], cstrToNimstr(tempFrames_33556573[j_33556603].Field2));;
            if ((0 < tempFrames_33556573[j_33556603].Field1)) {
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit("("));;
            addInt_251658457(result_33556562, 0, tempFrames_33556573[j_33556603].Field1);
            if (false) {
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit(", "));;
            addInt_251658457(result_33556562, 0, 0);
            }
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit(")"));;
            }
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit(" at "));;
            add_33556420(result_33556562, 0, tempFrames_33556573[j_33556603].Field0);
            result_33556562[0].push.apply(result_33556562[0], makeNimstrLit("\x0A"));;
            res_436207678 -= 1;
          }
      } while (false);
    } while (false);
  return result_33556562[0];
}
function rawWriteStackTrace_33556632() {
  var result_33556633 = [];
    if (!((framePtr == null))) {
    result_33556633 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(auxWriteStackTrace_33556560(framePtr) || []), NTI33554439);
    }
    else {
      result_33556633 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI33554439);
    }
  return result_33556633;
}
function newSeq_33556826(len_33556828) {
  var result_33556829 = [];
    result_33556829 = new Array(len_33556828); for (var i = 0 ; i < len_33556828 ; ++i) { result_33556829[i] = null; }
  return result_33556829;
}
function unhandledException(e_33556664) {
    var buf_33556665 = [[]];
    if (!(((e_33556664.message).length == 0))) {
    buf_33556665[0].push.apply(buf_33556665[0], makeNimstrLit("Error: unhandled exception: "));;
    buf_33556665[0].push.apply(buf_33556665[0], e_33556664.message);;
    }
    else {
    buf_33556665[0].push.apply(buf_33556665[0], makeNimstrLit("Error: unhandled exception"));;
    }
    buf_33556665[0].push.apply(buf_33556665[0], makeNimstrLit(" ["));;
    add_33556420(buf_33556665, 0, e_33556664.name);
    buf_33556665[0].push.apply(buf_33556665[0], makeNimstrLit("]\x0A"));;
    buf_33556665[0].push.apply(buf_33556665[0], rawWriteStackTrace_33556632());;
    var cbuf_33556666 = toJSStr(buf_33556665[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_33556666);
  }
  else {
    throw cbuf_33556666;
  }
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI33555122, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33556939) {
        if (a_33556939 > 2147483647 || a_33556939 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
    raiseException({message: makeNimstrLit("value out of range"), parent: null, m_type: NTI33555130, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_251658415(result_251658417, result_251658417_Idx, x_251658418, start_251658419, n_251658420) {
    var old_251658421 = (result_251658417[result_251658417_Idx]).length;
    (result_251658417[result_251658417_Idx].length = chckRange(addInt(old_251658421, n_251658420), 0, 2147483647));
    Label1: do {
      var iHEX60gensym4_251658435 = 0;
      var i_436207671 = 0;
      Label2: do {
          Label3: while (true) {
          if (!(i_436207671 < n_251658420)) break Label3;
            iHEX60gensym4_251658435 = i_436207671;
            result_251658417[result_251658417_Idx][chckIndx(addInt(old_251658421, iHEX60gensym4_251658435), 0, (result_251658417[result_251658417_Idx]).length - 1)] = x_251658418.charCodeAt(chckIndx(addInt(start_251658419, iHEX60gensym4_251658435), 0, (x_251658418).length - 1));
            i_436207671 = addInt(i_436207671, 1);
          }
      } while (false);
    } while (false);
}
function addChars_251658411(result_251658413, result_251658413_Idx, x_251658414) {
    addChars_251658415(result_251658413, result_251658413_Idx, x_251658414, 0, ((x_251658414) == null ? 0 : (x_251658414).length));
}
function addInt_251658436(result_251658437, result_251658437_Idx, x_251658438) {
    addChars_251658411(result_251658437, result_251658437_Idx, ((x_251658438) + ""));
}
function addInt_251658457(result_251658458, result_251658458_Idx, x_251658459) {
    addInt_251658436(result_251658458, result_251658458_Idx, x_251658459);
}
function HEX24_318767107(x_318767108) {
  var result_318767109 = [[]];
    addInt_251658457(result_318767109, 0, x_318767108);
  return result_318767109[0];
}
function raiseIndexError(i_33556755, a_33556756, b_33556757) {
    var Temporary1;
    if ((b_33556757 < a_33556756)) {
    Temporary1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Temporary1 = (makeNimstrLit("index ") || []).concat(HEX24_318767107(i_33556755) || [],makeNimstrLit(" not in ") || [],HEX24_318767107(a_33556756) || [],makeNimstrLit(" .. ") || [],HEX24_318767107(b_33556757) || []);
    }
    raiseException({message: nimCopy(null, Temporary1, NTI33554439), parent: null, m_type: NTI33555128, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_436207649(s_436207653, value_436207654) {
  var result_436207655 = false;
    result_436207655 = ((s_436207653.a <= value_436207654) && (value_436207654 <= s_436207653.b));
  return result_436207655;
}
function HEX2EHEX2E_436207619(a_436207622, b_436207623) {
  var result_436207626 = ({a: 0, b: 0});
    result_436207626 = nimCopy(result_436207626, {a: a_436207622, b: b_436207623}, NTI436207625);
  return result_436207626;
}
function sysFatal_218103842(message_218103845) {
    raiseException({message: nimCopy(null, message_218103845, NTI33554439), m_type: NTI33555124, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_218103840(msg_218103841) {
    sysFatal_218103842(msg_218103841);
}
function failedAssertImpl_218103864(msg_218103865) {
    raiseAssert_218103840(msg_218103865);
}
          var Temporary5;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_436207617 = [[]];
Label1: do {
  var c_436207618 = [0];
  var i_436207664 = 0;
  var L_436207665 = 5;
  Label2: do {
      Label3: while (true) {
      if (!(i_436207664 < L_436207665)) break Label3;
        c_436207618[0] = makeNimstrLit("1_2_3")[chckIndx(i_436207664, 0, (makeNimstrLit("1_2_3")).length - 1)];
        Label4: do {
          if (contains_436207649(HEX2EHEX2E_436207619(48, 57), c_436207618[0])) {
          Temporary5 = c_436207618[0];
          }
          else {
            break Label4;
          }
        } while (false);
        addChar(s_436207617[0], Temporary5);;
        i_436207664 = addInt(i_436207664, 1);
        if (!((5 == L_436207665))) {
        failedAssertImpl_218103864(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.6.0/lib/system/iterators.nim(258, 11) `len(a) == L` the length of the string changed while iterating over it"));
        }
      }
  } while (false);
} while (false);
if (!(eqStrings(s_436207617[0], makeNimstrLit("123")))) {
failedAssertImpl_218103864(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.4.0 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:491
    throw new Error(cbuf_1420201);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 10) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:491:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:282:5)
    at sysFatal_1305418 (/home/runner/work/Nim/Nim/temp:542:5)
    at raiseAssert_1305414 (/home/runner/work/Nim/Nim/temp:547:5)
    at failedAssertImpl_1305480 (/home/runner/work/Nim/Nim/temp:552:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:587:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node /home/runner/work/Nim/Nim/temp '

Stats

• Created 2023-07-10T13:52:01Z
• Started 2023-07-10T13:52:40
• Finished 2023-07-10T13:52:40
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI1194641 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194633 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194637 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1188011 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI1855011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI1188044 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI1380043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI1194408 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194728 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI1188015 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI1194723 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI1194617 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194619 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194649 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1188013 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NNI1194649 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194649.node = NNI1194649;
var NNI1194619 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194619.node = NNI1194619;
NTI1194723.base = NTI1194617;
NTI1194728.base = NTI1194617;
var NNI1194617 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI1194723, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI1188015, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI1188013, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI1188013, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI1194728, name: "up", sons: null}]};
NTI1194617.node = NNI1194617;
var NNI1194408 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194408.node = NNI1194408;
NTI1194617.base = NTI1194408;
NTI1194619.base = NTI1194617;
NTI1194649.base = NTI1194619;
var NNI1380043 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI1188015, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI1188044, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI1188015, name: "Field2", sons: null}]};
NTI1380043.node = NNI1380043;
var NNI1855011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI1188011, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI1188011, name: "b", sons: null}]};
NTI1855011.node = NNI1855011;
var NNI1194637 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194637.node = NNI1194637;
var NNI1194633 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194633.node = NNI1194633;
NTI1194633.base = NTI1194619;
NTI1194637.base = NTI1194633;
var NNI1194641 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194641.node = NNI1194641;
NTI1194641.base = NTI1194619;
function makeNimstrLit(c_1455062) {
      var ln = c_1455062.length;
  var result = new Array(ln);
  for (var i = 0; i < ln; ++i) {
    result[i] = c_1455062.charCodeAt(i);
  }
  return result;
}
function cstrToNimstr(c_1455079) {
      var ln = c_1455079.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_1455079.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_1455079.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_1470023, src_1470024, ti_1470025) {
  var result_1475219 = null;
    switch (ti_1470025.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(isFatPointer_1465401(ti_1470025))) {
      result_1475219 = src_1470024;
      }
      else {
        result_1475219 = [src_1470024[0], src_1470024[1]];
      }
      break;
    case 19:
            if (dest_1470023 === null || dest_1470023 === undefined) {
        dest_1470023 = {};
      }
      else {
        for (var key in dest_1470023) { delete dest_1470023[key]; }
      }
      for (var key in src_1470024) { dest_1470023[key] = src_1470024[key]; }
      result_1475219 = dest_1470023;
      break;
    case 18:
    case 17:
      if (!((ti_1470025.base == null))) {
      result_1475219 = nimCopy(dest_1470023, src_1470024, ti_1470025.base);
      }
      else {
      if ((ti_1470025.kind == 17)) {
      result_1475219 = (dest_1470023 === null || dest_1470023 === undefined) ? {m_type: ti_1470025} : dest_1470023;
      }
      else {
        result_1475219 = (dest_1470023 === null || dest_1470023 === undefined) ? {} : dest_1470023;
      }
      }
      nimCopyAux(result_1475219, src_1470024, ti_1470025.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_1470024 === null) {
        result_1475219 = null;
      }
      else {
        if (dest_1470023 === null || dest_1470023 === undefined) {
          dest_1470023 = new Array(src_1470024.length);
        }
        else {
          dest_1470023.length = src_1470024.length;
        }
        result_1475219 = dest_1470023;
        for (var i = 0; i < src_1470024.length; ++i) {
          result_1475219[i] = nimCopy(result_1475219[i], src_1470024[i], ti_1470025.base);
        }
      }
      break;
    case 28:
            if (src_1470024 !== null) {
        result_1475219 = src_1470024.slice(0);
      }
      break;
    default: 
      result_1475219 = src_1470024;
      break;
    }
  return result_1475219;
}
function arrayConstr(len_1480067, value_1480068, typ_1480069) {
        var result = new Array(len_1480067);
    for (var i = 0; i < len_1480067; ++i) result[i] = nimCopy(null, value_1480068, typ_1480069);
    return result;
}
function toJSStr(s_1455096) {
                    var Tmp5;
            var Tmp7;
  var result_1455097 = null;
    var res_1455170 = newSeq_1455128((s_1455096).length);
    var i_1455172 = 0;
    var j_1455174 = 0;
    L1: do {
        L2: while (true) {
        if (!(i_1455172 < (s_1455096).length)) break L2;
          var c_1455175 = s_1455096[i_1455172];
          if ((c_1455175 < 128)) {
          res_1455170[j_1455174] = String.fromCharCode(c_1455175);
          i_1455172 += 1;
          }
          else {
            var helper_1455198 = newSeq_1455128(0);
            L3: do {
                L4: while (true) {
                if (!true) break L4;
                  var code_1455199 = c_1455175.toString(16);
                  if (((code_1455199).length == 1)) {
                  helper_1455198.push("%0");;
                  }
                  else {
                  helper_1455198.push("%");;
                  }
                  helper_1455198.push(code_1455199);;
                  i_1455172 += 1;
                    if (((s_1455096).length <= i_1455172)) Tmp5 = true; else {                      Tmp5 = (s_1455096[i_1455172] < 128);                    }                  if (Tmp5) {
                  break L3;
                  }
                  c_1455175 = s_1455096[i_1455172];
                }
            } while(false);
++excHandler;
            Tmp7 = framePtr;
            try {
            res_1455170[j_1455174] = decodeURIComponent(helper_1455198.join(""));
--excHandler;
} catch (EXC) {
 var prevJSError = lastJSError;
 lastJSError = EXC;
 --excHandler;
            framePtr = Tmp7;
            res_1455170[j_1455174] = helper_1455198.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Tmp7;
            }
          }
          j_1455174 += 1;
        }
    } while(false);
    if (res_1455170.length < j_1455174) { for (var i=res_1455170.length;i<j_1455174;++i) res_1455170.push(null); }
               else { res_1455170.length = j_1455174; };
    result_1455097 = res_1455170.join("");
  return result_1455097;
}
function raiseException(e_1420218, ename_1420219) {
    e_1420218.name = ename_1420219;
    if ((excHandler == 0)) {
    unhandledException(e_1420218);
    }
    e_1420218.trace = nimCopy(null, rawWriteStackTrace_1410260(), NTI1188013);
    throw e_1420218;
}
function chckIndx(i_1480086, a_1480087, b_1480088) {
      var Tmp1;
  var result_1480089 = 0;
  BeforeRet: do {
      if (!(a_1480087 <= i_1480086)) Tmp1 = false; else {        Tmp1 = (i_1480086 <= b_1480088);      }    if (Tmp1) {
    result_1480089 = i_1480086;
    break BeforeRet;
    }
    else {
    raiseIndexError(i_1480086, a_1480087, b_1480088);
    }
  } while (false);
  return result_1480089;
}
function addChar(x_1505031, c_1505032) {
    x_1505031.push(c_1505032);
}
function addInt(a_1460419, b_1460420) {
        var result = a_1460419 + b_1460420;
    checkOverflowInt(result);
    return result;
}
function eqStrings(a_1460222, b_1460223) {
        if (a_1460222 == b_1460223) return true;
    if (a_1460222 === null && b_1460223.length == 0) return true;
    if (b_1460223 === null && a_1460222.length == 0) return true;
    if ((!a_1460222) || (!b_1460223)) return false;
    var alen = a_1460222.length;
    if (alen != b_1460223.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_1460222[i] != b_1460223[i]) return false;
    return true;
}
var globalRaiseHook_1357018 = [null];
var localRaiseHook_1357023 = [null];
var outOfMemHook_1357026 = [null];
var unhandledExceptionHook_1357031 = [null];
function isFatPointer_1465401(ti_1465403) {
  var result_1465404 = false;
  BeforeRet: do {
    result_1465404 = !((ConstSet1[ti_1465403.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_1465404;
}
function nimCopyAux(dest_1470028, src_1470029, n_1470031) {
    switch (n_1470031.kind) {
    case 0:
      break;
    case 1:
            dest_1470028[n_1470031.offset] = nimCopy(dest_1470028[n_1470031.offset], src_1470029[n_1470031.offset], n_1470031.typ);
      break;
    case 2:
          for (var i = 0; i < n_1470031.sons.length; i++) {
      nimCopyAux(dest_1470028, src_1470029, n_1470031.sons[i]);
    }
      break;
    case 3:
            dest_1470028[n_1470031.offset] = nimCopy(dest_1470028[n_1470031.offset], src_1470029[n_1470031.offset], n_1470031.typ);
      for (var i = 0; i < n_1470031.sons.length; ++i) {
        nimCopyAux(dest_1470028, src_1470029, n_1470031.sons[i][1]);
      }
      break;
    }
}
function add_1357042(x_1357045, x_1357045_Idx, y_1357046) {
          if (x_1357045[x_1357045_Idx] === null) { x_1357045[x_1357045_Idx] = []; }
      var off = x_1357045[x_1357045_Idx].length;
      x_1357045[x_1357045_Idx].length += y_1357046.length;
      for (var i = 0; i < y_1357046.length; ++i) {
        x_1357045[x_1357045_Idx][off+i] = y_1357046.charCodeAt(i);
      }
}
function auxWriteStackTrace_1380038(f_1380040) {
          var Tmp3;
  var result_1380041 = [[]];
    var it_1380051 = f_1380040;
    var i_1380053 = 0;
    var total_1380055 = 0;
    var tempFrames_1380062 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI1380043);
    L1: do {
        L2: while (true) {
          if (!!((it_1380051 == null))) Tmp3 = false; else {            Tmp3 = (i_1380053 <= 63);          }        if (!Tmp3) break L2;
          tempFrames_1380062[i_1380053].Field0 = it_1380051.procname;
          tempFrames_1380062[i_1380053].Field1 = it_1380051.line;
          tempFrames_1380062[i_1380053].Field2 = it_1380051.filename;
          i_1380053 += 1;
          total_1380055 += 1;
          it_1380051 = it_1380051.prev;
        }
    } while(false);
    L4: do {
        L5: while (true) {
        if (!!((it_1380051 == null))) break L5;
          total_1380055 += 1;
          it_1380051 = it_1380051.prev;
        }
    } while(false);
    result_1380041[0] = nimCopy(null, [], NTI1188013);
    if (!((total_1380055 == i_1380053))) {
    result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("("));;
    result_1380041[0].push.apply(result_1380041[0], cstrToNimstr(((total_1380055 - i_1380053))+""));;
    result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(" calls omitted) ...\x0A"));;
    }
    L6: do {
      var j_1395236 = 0;
      var colontmp__1865232 = 0;
      colontmp__1865232 = (i_1380053 - 1);
      var res_1865237 = colontmp__1865232;
      L7: do {
          L8: while (true) {
          if (!(0 <= res_1865237)) break L8;
            j_1395236 = res_1865237;
            result_1380041[0].push.apply(result_1380041[0], cstrToNimstr(tempFrames_1380062[j_1395236].Field2));;
            if ((0 < tempFrames_1380062[j_1395236].Field1)) {
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("("));;
            result_1380041[0].push.apply(result_1380041[0], cstrToNimstr((tempFrames_1380062[j_1395236].Field1)+""));;
            if (false) {
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(", "));;
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("0"));;
            }
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(")"));;
            }
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(" at "));;
            add_1357042(result_1380041, 0, tempFrames_1380062[j_1395236].Field0);
            result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("\x0A"));;
            res_1865237 -= 1;
          }
      } while(false);
    } while(false);
  return result_1380041[0];
}
function rawWriteStackTrace_1410260() {
  var result_1410262 = [];
    if (!((framePtr == null))) {
    result_1410262 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(auxWriteStackTrace_1380038(framePtr) || []), NTI1188013);
    }
    else {
      result_1410262 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI1188013);
    }
  return result_1410262;
}
function newSeq_1455128(len_1455131) {
  var result_1455133 = [];
    result_1455133 = new Array(len_1455131); for (var i=0;i<len_1455131;++i) {result_1455133[i]=null;}
  return result_1455133;
}
function unhandledException(e_1415059) {
    var buf_1415060 = [[]];
    if (!(((e_1415059.message).length == 0))) {
    buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("Error: unhandled exception: "));;
    buf_1415060[0].push.apply(buf_1415060[0], e_1415059.message);;
    }
    else {
    buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("Error: unhandled exception"));;
    }
    buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit(" ["));;
    add_1357042(buf_1415060, 0, e_1415059.name);
    buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("]\x0A"));;
    buf_1415060[0].push.apply(buf_1415060[0], rawWriteStackTrace_1410260());;
    var cbuf_1420201 = toJSStr(buf_1415060[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_1420201);
  }
  else {
    throw cbuf_1420201;
  }
}
function raiseIndexError(i_1440047, a_1440048, b_1440049) {
    var Tmp1;
    if ((b_1440049 < a_1440048)) {
    Tmp1 = makeNimstrLit("index out of bounds, the container is empty");
    }
    else {
    Tmp1 = (makeNimstrLit("index ") || []).concat(cstrToNimstr((i_1440047)+"") || [],makeNimstrLit(" not in ") || [],cstrToNimstr((a_1440048)+"") || [],makeNimstrLit(" .. ") || [],cstrToNimstr((b_1440049)+"") || []);
    }
    raiseException({message: nimCopy(null, Tmp1, NTI1188013), parent: null, m_type: NTI1194649, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_1855072(s_1855078, value_1855079) {
  var result_1855080 = false;
    result_1855080 = ((s_1855078.a <= value_1855079) && (value_1855079 <= s_1855078.b));
  return result_1855080;
}
function HEX2EHEX2E_1855001(a_1855006, b_1855008) {
  var result_1855014 = ({a: 0, b: 0});
    nimCopy(result_1855014, {a: a_1855006, b: b_1855008}, NTI1855011);
  return result_1855014;
}
function raiseOverflow() {
    raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI1194637, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_1460403) {
        if (a_1460403 > 2147483647 || a_1460403 < -2147483648) raiseOverflow();
}
function sysFatal_1305418(message_1305422) {
    raiseException({message: nimCopy(null, message_1305422, NTI1188013), m_type: NTI1194641, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_1305414(msg_1305416) {
    sysFatal_1305418(msg_1305416);
}
function failedAssertImpl_1305480(msg_1305482) {
    raiseAssert_1305414(msg_1305482);
}
          var Tmp5;
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
var s_1852002 = [[]];
L1: do {
  var c_1852004 = [0];
  var i_1865217 = 0;
  var L_1865218 = 5;
  L2: do {
      L3: while (true) {
      if (!(i_1865217 < L_1865218)) break L3;
        c_1852004[0] = makeNimstrLit("1_2_3")[chckIndx(i_1865217, 0, (makeNimstrLit("1_2_3")).length-1)];
        L4: do {
          if (contains_1855072(HEX2EHEX2E_1855001(48, 57), c_1852004[0])) {
          Tmp5 = c_1852004[0];
          }
          else {
            break L4;
          }
        } while(false);
        addChar(s_1852002[0], Tmp5);;
        i_1865217 = addInt(i_1865217, 1);
        if (!((5 == L_1865218))) {
        failedAssertImpl_1305480(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.4.0/lib/system/iterators.nim(222, 11) `len(a) == L` the length of the string changed while iterating over it"));
        }
      }
  } while(false);
} while(false);
if (!(eqStrings(s_1852002[0], makeNimstrLit("123")))) {
failedAssertImpl_1305480(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}
framePtr = F.prev;
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
framePtr = F.prev;
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
framePtr = F.prev;

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.2.0 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:460
    throw new Error(cbuf_190201);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 10) `s == "123"`  [AssertionError]
No stack traceback available

    at unhandledException (/home/runner/work/Nim/Nim/temp:460:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:275:5)
    at sys_fatal_102618 (/home/runner/work/Nim/Nim/temp:470:5)
    at raise_assert_102614 (/home/runner/work/Nim/Nim/temp:475:5)
    at failed_assert_impl_102680 (/home/runner/work/Nim/Nim/temp:480:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:513:1)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)

Node.js v18.16.1
Error: execution of an external program failed: '/usr/local/bin/node /home/runner/work/Nim/Nim/temp '

Stats

• Created 2023-07-10T13:52:01Z
• Started 2023-07-10T13:52:56
• Finished 2023-07-10T13:52:56
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI143 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI160043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI6008 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6286 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI114 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI6281 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI6217 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6219 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6241 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI112 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI110 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI625011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NNI625011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI110, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI110, name: "b", sons: null}]};
NTI625011.node = NNI625011;
var NNI6241 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6241.node = NNI6241;
var NNI6219 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6219.node = NNI6219;
NTI6281.base = NTI6217;
NTI6286.base = NTI6217;
var NNI6217 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI6281, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI114, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI112, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI112, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI6286, name: "up", sons: null}]};
NTI6217.node = NNI6217;
var NNI6008 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6008.node = NNI6008;
NTI6217.base = NTI6008;
NTI6219.base = NTI6217;
NTI6241.base = NTI6219;
var NNI160043 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI114, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI143, name: "Field1", sons: null}]};
NTI160043.node = NNI160043;
function makeNimstrLit(c_225062) {
      var ln = c_225062.length;
  var result = new Array(ln);
  for (var i = 0; i < ln; ++i) {
    result[i] = c_225062.charCodeAt(i);
  }
  return result;
}
function addChar(x_275031, c_275032) {
    x_275031.push(c_275032);
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_240023, src_240024, ti_240025) {
  var result_245219 = null;
    switch (ti_240025.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(is_fat_pointer_235401(ti_240025))) {
      result_245219 = src_240024;
      }
      else {
        result_245219 = [src_240024[0], src_240024[1]];
      }
      break;
    case 19:
            if (dest_240023 === null || dest_240023 === undefined) {
        dest_240023 = {};
      }
      else {
        for (var key in dest_240023) { delete dest_240023[key]; }
      }
      for (var key in src_240024) { dest_240023[key] = src_240024[key]; }
      result_245219 = dest_240023;
      break;
    case 18:
    case 17:
      if (!((ti_240025.base == null))) {
      result_245219 = nimCopy(dest_240023, src_240024, ti_240025.base);
      }
      else {
      if ((ti_240025.kind == 17)) {
      result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {m_type: ti_240025} : dest_240023;
      }
      else {
        result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {} : dest_240023;
      }
      }
      nimCopyAux(result_245219, src_240024, ti_240025.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_240024 === null) {
        result_245219 = null;
      }
      else {
        if (dest_240023 === null || dest_240023 === undefined) {
          dest_240023 = new Array(src_240024.length);
        }
        else {
          dest_240023.length = src_240024.length;
        }
        result_245219 = dest_240023;
        for (var i = 0; i < src_240024.length; ++i) {
          result_245219[i] = nimCopy(result_245219[i], src_240024[i], ti_240025.base);
        }
      }
      break;
    case 28:
            if (src_240024 !== null) {
        result_245219 = src_240024.slice(0);
      }
      break;
    default: 
      result_245219 = src_240024;
      break;
    }
  return result_245219;
}
function arrayConstr(len_250067, value_250068, typ_250069) {
        var result = new Array(len_250067);
    for (var i = 0; i < len_250067; ++i) result[i] = nimCopy(null, value_250068, typ_250069);
    return result;
}
function cstrToNimstr(c_225079) {
      var ln = c_225079.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_225079.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_225079.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_225096) {
                    var Tmp5;
            var Tmp7;
  var result_225097 = null;
    var res_225170 = new_seq_225128((s_225096 != null ? s_225096.length : 0));
    var i_225172 = 0;
    var j_225174 = 0;
    L1: do {
        L2: while (true) {
        if (!(i_225172 < (s_225096 != null ? s_225096.length : 0))) break L2;
          var c_225175 = s_225096[i_225172];
          if ((c_225175 < 128)) {
          res_225170[j_225174] = String.fromCharCode(c_225175);
          i_225172 += 1;
          }
          else {
            var helper_225198 = new_seq_225128(0);
            L3: do {
                L4: while (true) {
                if (!true) break L4;
                  var code_225199 = c_225175.toString(16);
                  if (((code_225199 != null ? code_225199.length : 0) == 1)) {
                  if (helper_225198 != null) { helper_225198.push("%0"); } else { helper_225198 = ["%0"]; };
                  }
                  else {
                  if (helper_225198 != null) { helper_225198.push("%"); } else { helper_225198 = ["%"]; };
                  }
                  if (helper_225198 != null) { helper_225198.push(code_225199); } else { helper_225198 = [code_225199]; };
                  i_225172 += 1;
                    if (((s_225096 != null ? s_225096.length : 0) <= i_225172)) Tmp5 = true; else {                      Tmp5 = (s_225096[i_225172] < 128);                    }                  if (Tmp5) {
                  break L3;
                  }
                  c_225175 = s_225096[i_225172];
                }
            } while(false);
++excHandler;
            Tmp7 = framePtr;
            try {
            res_225170[j_225174] = decodeURIComponent(helper_225198.join(""));
--excHandler;
} catch (EXC) {
 var prevJSError = lastJSError;
 lastJSError = EXC;
 --excHandler;
            framePtr = Tmp7;
            res_225170[j_225174] = helper_225198.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Tmp7;
            }
          }
          j_225174 += 1;
        }
    } while(false);
    if (res_225170 === null) res_225170 = [];
               if (res_225170.length < j_225174) { for (var i=res_225170.length;i<j_225174;++i) res_225170.push(null); }
               else { res_225170.length = j_225174; };
    result_225097 = res_225170.join("");
  return result_225097;
}
function raiseException(e_190218, ename_190219) {
    e_190218.name = ename_190219;
    if ((excHandler == 0)) {
    unhandledException(e_190218);
    }
    e_190218.trace = nimCopy(null, raw_write_stack_trace_180059(), NTI112);
    throw e_190218;
}
function eqStrings(a_230222, b_230223) {
        if (a_230222 == b_230223) return true;
    if (a_230222 === null && b_230223.length == 0) return true;
    if (b_230223 === null && a_230222.length == 0) return true;
    if ((!a_230222) || (!b_230223)) return false;
    var alen = a_230222.length;
    if (alen != b_230223.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_230222[i] != b_230223[i]) return false;
    return true;
}
process.exitCode = 0;
var global_raise_hook_142018 = [null];
var local_raise_hook_142023 = [null];
var out_of_mem_hook_142026 = [null];
var unhandled_exception_hook_142031 = [null];
function contains_625072(s_625078, value_625079) {
  var result_625080 = false;
    result_625080 = ((s_625078.a <= value_625079) && (value_625079 <= s_625078.b));
  return result_625080;
}
function is_fat_pointer_235401(ti_235403) {
  var result_235404 = false;
  BeforeRet: do {
    result_235404 = !((ConstSet1[ti_235403.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_235404;
}
function nimCopyAux(dest_240028, src_240029, n_240031) {
    switch (n_240031.kind) {
    case 0:
      break;
    case 1:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      break;
    case 2:
          for (var i = 0; i < n_240031.sons.length; i++) {
      nimCopyAux(dest_240028, src_240029, n_240031.sons[i]);
    }
      break;
    case 3:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      for (var i = 0; i < n_240031.sons.length; ++i) {
        nimCopyAux(dest_240028, src_240029, n_240031.sons[i][1]);
      }
      break;
    }
}
function HEX2EHEX2E_625001(a_625006, b_625008) {
  var result_625014 = {a: 0, b: 0};
    nimCopy(result_625014, {a: a_625006, b: b_625008}, NTI625011);
  return result_625014;
}
function add_142042(x_142045, x_142045_Idx, y_142046) {
          if (x_142045[x_142045_Idx] === null) { x_142045[x_142045_Idx] = []; }
      var off = x_142045[x_142045_Idx].length;
      x_142045[x_142045_Idx].length += y_142046.length;
      for (var i = 0; i < y_142046.length; ++i) {
        x_142045[x_142045_Idx][off+i] = y_142046.charCodeAt(i);
      }
}
function aux_write_stack_trace_160038(f_160040) {
          var Tmp3;
  var result_160041 = [null];
    var it_160049 = f_160040;
    var i_160051 = 0;
    var total_160053 = 0;
    var temp_frames_160060 = arrayConstr(64, {Field0: null, Field1: 0}, NTI160043);
    L1: do {
        L2: while (true) {
          if (!!((it_160049 == null))) Tmp3 = false; else {            Tmp3 = (i_160051 <= 63);          }        if (!Tmp3) break L2;
          temp_frames_160060[i_160051].Field0 = it_160049.procname;
          temp_frames_160060[i_160051].Field1 = it_160049.line;
          i_160051 += 1;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    L4: do {
        L5: while (true) {
        if (!!((it_160049 == null))) break L5;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    result_160041[0] = nimCopy(null, [], NTI112);
    if (!((total_160053 == i_160051))) {
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("(")); } else { result_160041[0] = makeNimstrLit("("); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr(((total_160053 - i_160051))+"")); } else { result_160041[0] = cstrToNimstr(((total_160053 - i_160051))+"").slice(); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(" calls omitted) ...\x0A")); } else { result_160041[0] = makeNimstrLit(" calls omitted) ...\x0A"); };
    }
    L6: do {
      var j_175236 = 0;
      var colontmp__635227 = 0;
      colontmp__635227 = (i_160051 - 1);
      var res_635232 = colontmp__635227;
      L7: do {
          L8: while (true) {
          if (!(0 <= res_635232)) break L8;
            j_175236 = res_635232;
            add_142042(result_160041, 0, temp_frames_160060[j_175236].Field0);
            if ((0 < temp_frames_160060[j_175236].Field1)) {
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(", line: ")); } else { result_160041[0] = makeNimstrLit(", line: "); };
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr((temp_frames_160060[j_175236].Field1)+"")); } else { result_160041[0] = cstrToNimstr((temp_frames_160060[j_175236].Field1)+"").slice(); };
            }
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("\x0A")); } else { result_160041[0] = makeNimstrLit("\x0A"); };
            res_635232 -= 1;
          }
      } while(false);
    } while(false);
  return result_160041[0];
}
function raw_write_stack_trace_180059() {
  var result_180061 = null;
    if (!((framePtr == null))) {
    result_180061 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(aux_write_stack_trace_160038(framePtr) || []), NTI112);
    }
    else {
      result_180061 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI112);
    }
  return result_180061;
}
function new_seq_225128(len_225131) {
  var result_225133 = null;
    result_225133 = new Array(len_225131); for (var i=0;i<len_225131;++i) {result_225133[i]=null;}
  return result_225133;
}
function unhandledException(e_185059) {
    var buf_185060 = [[]];
    if (!(((e_185059.message != null ? e_185059.message.length : 0) == 0))) {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception: ")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception: "); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(e_185059.message); } else { buf_185060[0] = e_185059.message.slice(); };
    }
    else {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception"); };
    }
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit(" [")); } else { buf_185060[0] = makeNimstrLit(" ["); };
    add_142042(buf_185060, 0, e_185059.name);
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("]\x0A")); } else { buf_185060[0] = makeNimstrLit("]\x0A"); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(raw_write_stack_trace_180059()); } else { buf_185060[0] = raw_write_stack_trace_180059().slice(); };
    var cbuf_190201 = toJSStr(buf_185060[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_190201);
  }
  else {
    throw cbuf_190201;
  }
}
function sys_fatal_102618(message_102622) {
    raiseException({message: nimCopy(null, message_102622, NTI112), m_type: NTI6241, parent: null, name: null, trace: null, up: null}, "AssertionError");
}
function raise_assert_102614(msg_102616) {
    sys_fatal_102618(msg_102616);
}
function failed_assert_impl_102680(msg_102682) {
    raise_assert_102614(msg_102682);
}
          var Tmp5;
var s_622003 = [[]];
L1: do {
  var c_622005 = [0];
  var i_635217 = 0;
  var l_635218 = 5;
  L2: do {
      L3: while (true) {
      if (!(i_635217 < l_635218)) break L3;
        c_622005[0] = makeNimstrLit("1_2_3")[i_635217];
        L4: do {
          if (contains_625072(HEX2EHEX2E_625001(48, 57), c_622005[0])) {
          Tmp5 = c_622005[0];
          }
          else {
            break L4;
          }
        } while(false);
        if (s_622003[0] != null) { addChar(s_622003[0], Tmp5); } else { s_622003[0] = [Tmp5]; };
        i_635217 += 1;
        if (!((5 == l_635218))) {
        failed_assert_impl_102680(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.2.0/lib/system/iterators.nim(207, 11) `len(a) == L` the length of the string changed while iterating over it"));
        }
      }
  } while(false);
} while(false);
if (!(eqStrings(s_622003[0], makeNimstrLit("123")))) {
failed_assert_impl_102680(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.0.0 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp.nim(2, 43) Error: expression 'c' is of type 'char' and has to be discarded

Stats

• Created 2023-07-10T13:52:01Z
• Started 2023-07-10T13:53:08
• Finished 2023-07-10T13:53:08
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI143 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI160043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI6008 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6286 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI114 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI6281 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI6217 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6219 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6241 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI112 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI110 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI625011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NNI625011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI110, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI110, name: "b", sons: null}]};
NTI625011.node = NNI625011;
var NNI6241 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6241.node = NNI6241;
var NNI6219 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6219.node = NNI6219;
NTI6281.base = NTI6217;
NTI6286.base = NTI6217;
var NNI6217 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI6281, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI114, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI112, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI112, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI6286, name: "up", sons: null}]};
NTI6217.node = NNI6217;
var NNI6008 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6008.node = NNI6008;
NTI6217.base = NTI6008;
NTI6219.base = NTI6217;
NTI6241.base = NTI6219;
var NNI160043 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI114, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI143, name: "Field1", sons: null}]};
NTI160043.node = NNI160043;
function makeNimstrLit(c_225062) {
      var ln = c_225062.length;
  var result = new Array(ln);
  for (var i = 0; i < ln; ++i) {
    result[i] = c_225062.charCodeAt(i);
  }
  return result;
}
function addChar(x_275031, c_275032) {
    x_275031.push(c_275032);
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_240023, src_240024, ti_240025) {
  var result_245219 = null;
    switch (ti_240025.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(is_fat_pointer_235401(ti_240025))) {
      result_245219 = src_240024;
      }
      else {
        result_245219 = [src_240024[0], src_240024[1]];
      }
      break;
    case 19:
            if (dest_240023 === null || dest_240023 === undefined) {
        dest_240023 = {};
      }
      else {
        for (var key in dest_240023) { delete dest_240023[key]; }
      }
      for (var key in src_240024) { dest_240023[key] = src_240024[key]; }
      result_245219 = dest_240023;
      break;
    case 18:
    case 17:
      if (!((ti_240025.base == null))) {
      result_245219 = nimCopy(dest_240023, src_240024, ti_240025.base);
      }
      else {
      if ((ti_240025.kind == 17)) {
      result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {m_type: ti_240025} : dest_240023;
      }
      else {
        result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {} : dest_240023;
      }
      }
      nimCopyAux(result_245219, src_240024, ti_240025.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_240024 === null) {
        result_245219 = null;
      }
      else {
        if (dest_240023 === null || dest_240023 === undefined) {
          dest_240023 = new Array(src_240024.length);
        }
        else {
          dest_240023.length = src_240024.length;
        }
        result_245219 = dest_240023;
        for (var i = 0; i < src_240024.length; ++i) {
          result_245219[i] = nimCopy(result_245219[i], src_240024[i], ti_240025.base);
        }
      }
      break;
    case 28:
            if (src_240024 !== null) {
        result_245219 = src_240024.slice(0);
      }
      break;
    default: 
      result_245219 = src_240024;
      break;
    }
  return result_245219;
}
function arrayConstr(len_250067, value_250068, typ_250069) {
        var result = new Array(len_250067);
    for (var i = 0; i < len_250067; ++i) result[i] = nimCopy(null, value_250068, typ_250069);
    return result;
}
function cstrToNimstr(c_225079) {
      var ln = c_225079.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_225079.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_225079.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_225096) {
                    var Tmp5;
            var Tmp7;
  var result_225097 = null;
    var res_225170 = new_seq_225128((s_225096 != null ? s_225096.length : 0));
    var i_225172 = 0;
    var j_225174 = 0;
    L1: do {
        L2: while (true) {
        if (!(i_225172 < (s_225096 != null ? s_225096.length : 0))) break L2;
          var c_225175 = s_225096[i_225172];
          if ((c_225175 < 128)) {
          res_225170[j_225174] = String.fromCharCode(c_225175);
          i_225172 += 1;
          }
          else {
            var helper_225198 = new_seq_225128(0);
            L3: do {
                L4: while (true) {
                if (!true) break L4;
                  var code_225199 = c_225175.toString(16);
                  if (((code_225199 != null ? code_225199.length : 0) == 1)) {
                  if (helper_225198 != null) { helper_225198.push("%0"); } else { helper_225198 = ["%0"]; };
                  }
                  else {
                  if (helper_225198 != null) { helper_225198.push("%"); } else { helper_225198 = ["%"]; };
                  }
                  if (helper_225198 != null) { helper_225198.push(code_225199); } else { helper_225198 = [code_225199]; };
                  i_225172 += 1;
                    if (((s_225096 != null ? s_225096.length : 0) <= i_225172)) Tmp5 = true; else {                      Tmp5 = (s_225096[i_225172] < 128);                    }                  if (Tmp5) {
                  break L3;
                  }
                  c_225175 = s_225096[i_225172];
                }
            } while(false);
++excHandler;
            Tmp7 = framePtr;
            try {
            res_225170[j_225174] = decodeURIComponent(helper_225198.join(""));
--excHandler;
} catch (EXC) {
 var prevJSError = lastJSError;
 lastJSError = EXC;
 --excHandler;
            framePtr = Tmp7;
            res_225170[j_225174] = helper_225198.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Tmp7;
            }
          }
          j_225174 += 1;
        }
    } while(false);
    if (res_225170 === null) res_225170 = [];
               if (res_225170.length < j_225174) { for (var i=res_225170.length;i<j_225174;++i) res_225170.push(null); }
               else { res_225170.length = j_225174; };
    result_225097 = res_225170.join("");
  return result_225097;
}
function raiseException(e_190218, ename_190219) {
    e_190218.name = ename_190219;
    if ((excHandler == 0)) {
    unhandledException(e_190218);
    }
    e_190218.trace = nimCopy(null, raw_write_stack_trace_180059(), NTI112);
    throw e_190218;
}
function eqStrings(a_230222, b_230223) {
        if (a_230222 == b_230223) return true;
    if (a_230222 === null && b_230223.length == 0) return true;
    if (b_230223 === null && a_230222.length == 0) return true;
    if ((!a_230222) || (!b_230223)) return false;
    var alen = a_230222.length;
    if (alen != b_230223.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_230222[i] != b_230223[i]) return false;
    return true;
}
process.exitCode = 0;
var global_raise_hook_142018 = [null];
var local_raise_hook_142023 = [null];
var out_of_mem_hook_142026 = [null];
var unhandled_exception_hook_142031 = [null];
function contains_625072(s_625078, value_625079) {
  var result_625080 = false;
    result_625080 = ((s_625078.a <= value_625079) && (value_625079 <= s_625078.b));
  return result_625080;
}
function is_fat_pointer_235401(ti_235403) {
  var result_235404 = false;
  BeforeRet: do {
    result_235404 = !((ConstSet1[ti_235403.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_235404;
}
function nimCopyAux(dest_240028, src_240029, n_240031) {
    switch (n_240031.kind) {
    case 0:
      break;
    case 1:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      break;
    case 2:
          for (var i = 0; i < n_240031.sons.length; i++) {
      nimCopyAux(dest_240028, src_240029, n_240031.sons[i]);
    }
      break;
    case 3:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      for (var i = 0; i < n_240031.sons.length; ++i) {
        nimCopyAux(dest_240028, src_240029, n_240031.sons[i][1]);
      }
      break;
    }
}
function HEX2EHEX2E_625001(a_625006, b_625008) {
  var result_625014 = {a: 0, b: 0};
    nimCopy(result_625014, {a: a_625006, b: b_625008}, NTI625011);
  return result_625014;
}
function add_142042(x_142045, x_142045_Idx, y_142046) {
          if (x_142045[x_142045_Idx] === null) { x_142045[x_142045_Idx] = []; }
      var off = x_142045[x_142045_Idx].length;
      x_142045[x_142045_Idx].length += y_142046.length;
      for (var i = 0; i < y_142046.length; ++i) {
        x_142045[x_142045_Idx][off+i] = y_142046.charCodeAt(i);
      }
}
function aux_write_stack_trace_160038(f_160040) {
          var Tmp3;
  var result_160041 = [null];
    var it_160049 = f_160040;
    var i_160051 = 0;
    var total_160053 = 0;
    var temp_frames_160060 = arrayConstr(64, {Field0: null, Field1: 0}, NTI160043);
    L1: do {
        L2: while (true) {
          if (!!((it_160049 == null))) Tmp3 = false; else {            Tmp3 = (i_160051 <= 63);          }        if (!Tmp3) break L2;
          temp_frames_160060[i_160051].Field0 = it_160049.procname;
          temp_frames_160060[i_160051].Field1 = it_160049.line;
          i_160051 += 1;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    L4: do {
        L5: while (true) {
        if (!!((it_160049 == null))) break L5;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    result_160041[0] = nimCopy(null, [], NTI112);
    if (!((total_160053 == i_160051))) {
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("(")); } else { result_160041[0] = makeNimstrLit("("); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr(((total_160053 - i_160051))+"")); } else { result_160041[0] = cstrToNimstr(((total_160053 - i_160051))+"").slice(); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(" calls omitted) ...\x0A")); } else { result_160041[0] = makeNimstrLit(" calls omitted) ...\x0A"); };
    }
    L6: do {
      var j_175236 = 0;
      var colontmp__635227 = 0;
      colontmp__635227 = (i_160051 - 1);
      var res_635232 = colontmp__635227;
      L7: do {
          L8: while (true) {
          if (!(0 <= res_635232)) break L8;
            j_175236 = res_635232;
            add_142042(result_160041, 0, temp_frames_160060[j_175236].Field0);
            if ((0 < temp_frames_160060[j_175236].Field1)) {
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(", line: ")); } else { result_160041[0] = makeNimstrLit(", line: "); };
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr((temp_frames_160060[j_175236].Field1)+"")); } else { result_160041[0] = cstrToNimstr((temp_frames_160060[j_175236].Field1)+"").slice(); };
            }
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("\x0A")); } else { result_160041[0] = makeNimstrLit("\x0A"); };
            res_635232 -= 1;
          }
      } while(false);
    } while(false);
  return result_160041[0];
}
function raw_write_stack_trace_180059() {
  var result_180061 = null;
    if (!((framePtr == null))) {
    result_180061 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(aux_write_stack_trace_160038(framePtr) || []), NTI112);
    }
    else {
      result_180061 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI112);
    }
  return result_180061;
}
function new_seq_225128(len_225131) {
  var result_225133 = null;
    result_225133 = new Array(len_225131); for (var i=0;i<len_225131;++i) {result_225133[i]=null;}
  return result_225133;
}
function unhandledException(e_185059) {
    var buf_185060 = [[]];
    if (!(((e_185059.message != null ? e_185059.message.length : 0) == 0))) {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception: ")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception: "); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(e_185059.message); } else { buf_185060[0] = e_185059.message.slice(); };
    }
    else {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception"); };
    }
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit(" [")); } else { buf_185060[0] = makeNimstrLit(" ["); };
    add_142042(buf_185060, 0, e_185059.name);
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("]\x0A")); } else { buf_185060[0] = makeNimstrLit("]\x0A"); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(raw_write_stack_trace_180059()); } else { buf_185060[0] = raw_write_stack_trace_180059().slice(); };
    var cbuf_190201 = toJSStr(buf_185060[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_190201);
  }
  else {
    throw cbuf_190201;
  }
}
function sys_fatal_102618(message_102622) {
    raiseException({message: nimCopy(null, message_102622, NTI112), m_type: NTI6241, parent: null, name: null, trace: null, up: null}, "AssertionError");
}
function raise_assert_102614(msg_102616) {
    sys_fatal_102618(msg_102616);
}
function failed_assert_impl_102680(msg_102682) {
    raise_assert_102614(msg_102682);
}
          var Tmp5;
var s_622003 = [[]];
L1: do {
  var c_622005 = [0];
  var i_635217 = 0;
  var l_635218 = 5;
  L2: do {
      L3: while (true) {
      if (!(i_635217 < l_635218)) break L3;
        c_622005[0] = makeNimstrLit("1_2_3")[i_635217];
        L4: do {
          if (contains_625072(HEX2EHEX2E_625001(48, 57), c_622005[0])) {
          Tmp5 = c_622005[0];
          }
          else {
            break L4;
          }
        } while(false);
        if (s_622003[0] != null) { addChar(s_622003[0], Tmp5); } else { s_622003[0] = [Tmp5]; };
        i_635217 += 1;
        if (!((5 == l_635218))) {
        failed_assert_impl_102680(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.2.0/lib/system/iterators.nim(207, 11) `len(a) == L` the length of the string changed while iterating over it"));
        }
      }
  } while(false);
} while(false);
if (!(eqStrings(s_622003[0], makeNimstrLit("123")))) {
failed_assert_impl_102680(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

0.20.2 :-1: FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen  --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off  --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp.nim(2, 43) Error: expression 'c' is of type 'char' and has to be discarded

Stats

• Created 2023-07-10T13:52:01Z
• Started 2023-07-10T13:53:19
• Finished 2023-07-10T13:53:19
• Duration now
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen --run -d:strip -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --threads:off --verbosity:0 --hints:off --warnings:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

IR

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI143 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI160043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI6008 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6286 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI114 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI6281 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI6217 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6219 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6241 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI112 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI110 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI625011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NNI625011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI110, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI110, name: "b", sons: null}]};
NTI625011.node = NNI625011;
var NNI6241 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6241.node = NNI6241;
var NNI6219 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6219.node = NNI6219;
NTI6281.base = NTI6217;
NTI6286.base = NTI6217;
var NNI6217 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI6281, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI114, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI112, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI112, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI6286, name: "up", sons: null}]};
NTI6217.node = NNI6217;
var NNI6008 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6008.node = NNI6008;
NTI6217.base = NTI6008;
NTI6219.base = NTI6217;
NTI6241.base = NTI6219;
var NNI160043 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI114, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI143, name: "Field1", sons: null}]};
NTI160043.node = NNI160043;
function makeNimstrLit(c_225062) {
      var ln = c_225062.length;
  var result = new Array(ln);
  for (var i = 0; i < ln; ++i) {
    result[i] = c_225062.charCodeAt(i);
  }
  return result;
}
function addChar(x_275031, c_275032) {
    x_275031.push(c_275032);
}
function setConstr() {
        var result = {};
    for (var i = 0; i < arguments.length; ++i) {
      var x = arguments[i];
      if (typeof(x) == "object") {
        for (var j = x[0]; j <= x[1]; ++j) {
          result[j] = true;
        }
      } else {
        result[x] = true;
      }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_240023, src_240024, ti_240025) {
  var result_245219 = null;
    switch (ti_240025.kind) {
    case 21:
    case 22:
    case 23:
    case 5:
      if (!(is_fat_pointer_235401(ti_240025))) {
      result_245219 = src_240024;
      }
      else {
        result_245219 = [src_240024[0], src_240024[1]];
      }
      break;
    case 19:
            if (dest_240023 === null || dest_240023 === undefined) {
        dest_240023 = {};
      }
      else {
        for (var key in dest_240023) { delete dest_240023[key]; }
      }
      for (var key in src_240024) { dest_240023[key] = src_240024[key]; }
      result_245219 = dest_240023;
      break;
    case 18:
    case 17:
      if (!((ti_240025.base == null))) {
      result_245219 = nimCopy(dest_240023, src_240024, ti_240025.base);
      }
      else {
      if ((ti_240025.kind == 17)) {
      result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {m_type: ti_240025} : dest_240023;
      }
      else {
        result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {} : dest_240023;
      }
      }
      nimCopyAux(result_245219, src_240024, ti_240025.node);
      break;
    case 24:
    case 4:
    case 27:
    case 16:
            if (src_240024 === null) {
        result_245219 = null;
      }
      else {
        if (dest_240023 === null || dest_240023 === undefined) {
          dest_240023 = new Array(src_240024.length);
        }
        else {
          dest_240023.length = src_240024.length;
        }
        result_245219 = dest_240023;
        for (var i = 0; i < src_240024.length; ++i) {
          result_245219[i] = nimCopy(result_245219[i], src_240024[i], ti_240025.base);
        }
      }
      break;
    case 28:
            if (src_240024 !== null) {
        result_245219 = src_240024.slice(0);
      }
      break;
    default: 
      result_245219 = src_240024;
      break;
    }
  return result_245219;
}
function arrayConstr(len_250067, value_250068, typ_250069) {
        var result = new Array(len_250067);
    for (var i = 0; i < len_250067; ++i) result[i] = nimCopy(null, value_250068, typ_250069);
    return result;
}
function cstrToNimstr(c_225079) {
      var ln = c_225079.length;
  var result = new Array(ln);
  var r = 0;
  for (var i = 0; i < ln; ++i) {
    var ch = c_225079.charCodeAt(i);
    if (ch < 128) {
      result[r] = ch;
    }
    else {
      if (ch < 2048) {
        result[r] = (ch >> 6) | 192;
      }
      else {
        if (ch < 55296 || ch >= 57344) {
          result[r] = (ch >> 12) | 224;
        }
        else {
            ++i;
            ch = 65536 + (((ch & 1023) << 10) | (c_225079.charCodeAt(i) & 1023));
            result[r] = (ch >> 18) | 240;
            ++r;
            result[r] = ((ch >> 12) & 63) | 128;
        }
        ++r;
        result[r] = ((ch >> 6) & 63) | 128;
      }
      ++r;
      result[r] = (ch & 63) | 128;
    }
    ++r;
  }
  return result;
}
function toJSStr(s_225096) {
                    var Tmp5;
            var Tmp7;
  var result_225097 = null;
    var res_225170 = new_seq_225128((s_225096 != null ? s_225096.length : 0));
    var i_225172 = 0;
    var j_225174 = 0;
    L1: do {
        L2: while (true) {
        if (!(i_225172 < (s_225096 != null ? s_225096.length : 0))) break L2;
          var c_225175 = s_225096[i_225172];
          if ((c_225175 < 128)) {
          res_225170[j_225174] = String.fromCharCode(c_225175);
          i_225172 += 1;
          }
          else {
            var helper_225198 = new_seq_225128(0);
            L3: do {
                L4: while (true) {
                if (!true) break L4;
                  var code_225199 = c_225175.toString(16);
                  if (((code_225199 != null ? code_225199.length : 0) == 1)) {
                  if (helper_225198 != null) { helper_225198.push("%0"); } else { helper_225198 = ["%0"]; };
                  }
                  else {
                  if (helper_225198 != null) { helper_225198.push("%"); } else { helper_225198 = ["%"]; };
                  }
                  if (helper_225198 != null) { helper_225198.push(code_225199); } else { helper_225198 = [code_225199]; };
                  i_225172 += 1;
                    if (((s_225096 != null ? s_225096.length : 0) <= i_225172)) Tmp5 = true; else {                      Tmp5 = (s_225096[i_225172] < 128);                    }                  if (Tmp5) {
                  break L3;
                  }
                  c_225175 = s_225096[i_225172];
                }
            } while(false);
++excHandler;
            Tmp7 = framePtr;
            try {
            res_225170[j_225174] = decodeURIComponent(helper_225198.join(""));
--excHandler;
} catch (EXC) {
 var prevJSError = lastJSError;
 lastJSError = EXC;
 --excHandler;
            framePtr = Tmp7;
            res_225170[j_225174] = helper_225198.join("");
            lastJSError = prevJSError;
            } finally {
            framePtr = Tmp7;
            }
          }
          j_225174 += 1;
        }
    } while(false);
    if (res_225170 === null) res_225170 = [];
               if (res_225170.length < j_225174) { for (var i=res_225170.length;i<j_225174;++i) res_225170.push(null); }
               else { res_225170.length = j_225174; };
    result_225097 = res_225170.join("");
  return result_225097;
}
function raiseException(e_190218, ename_190219) {
    e_190218.name = ename_190219;
    if ((excHandler == 0)) {
    unhandledException(e_190218);
    }
    e_190218.trace = nimCopy(null, raw_write_stack_trace_180059(), NTI112);
    throw e_190218;
}
function eqStrings(a_230222, b_230223) {
        if (a_230222 == b_230223) return true;
    if (a_230222 === null && b_230223.length == 0) return true;
    if (b_230223 === null && a_230222.length == 0) return true;
    if ((!a_230222) || (!b_230223)) return false;
    var alen = a_230222.length;
    if (alen != b_230223.length) return false;
    for (var i = 0; i < alen; ++i)
      if (a_230222[i] != b_230223[i]) return false;
    return true;
}
process.exitCode = 0;
var global_raise_hook_142018 = [null];
var local_raise_hook_142023 = [null];
var out_of_mem_hook_142026 = [null];
var unhandled_exception_hook_142031 = [null];
function contains_625072(s_625078, value_625079) {
  var result_625080 = false;
    result_625080 = ((s_625078.a <= value_625079) && (value_625079 <= s_625078.b));
  return result_625080;
}
function is_fat_pointer_235401(ti_235403) {
  var result_235404 = false;
  BeforeRet: do {
    result_235404 = !((ConstSet1[ti_235403.base.kind] != undefined));
    break BeforeRet;
  } while (false);
  return result_235404;
}
function nimCopyAux(dest_240028, src_240029, n_240031) {
    switch (n_240031.kind) {
    case 0:
      break;
    case 1:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      break;
    case 2:
          for (var i = 0; i < n_240031.sons.length; i++) {
      nimCopyAux(dest_240028, src_240029, n_240031.sons[i]);
    }
      break;
    case 3:
            dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
      for (var i = 0; i < n_240031.sons.length; ++i) {
        nimCopyAux(dest_240028, src_240029, n_240031.sons[i][1]);
      }
      break;
    }
}
function HEX2EHEX2E_625001(a_625006, b_625008) {
  var result_625014 = {a: 0, b: 0};
    nimCopy(result_625014, {a: a_625006, b: b_625008}, NTI625011);
  return result_625014;
}
function add_142042(x_142045, x_142045_Idx, y_142046) {
          if (x_142045[x_142045_Idx] === null) { x_142045[x_142045_Idx] = []; }
      var off = x_142045[x_142045_Idx].length;
      x_142045[x_142045_Idx].length += y_142046.length;
      for (var i = 0; i < y_142046.length; ++i) {
        x_142045[x_142045_Idx][off+i] = y_142046.charCodeAt(i);
      }
}
function aux_write_stack_trace_160038(f_160040) {
          var Tmp3;
  var result_160041 = [null];
    var it_160049 = f_160040;
    var i_160051 = 0;
    var total_160053 = 0;
    var temp_frames_160060 = arrayConstr(64, {Field0: null, Field1: 0}, NTI160043);
    L1: do {
        L2: while (true) {
          if (!!((it_160049 == null))) Tmp3 = false; else {            Tmp3 = (i_160051 <= 63);          }        if (!Tmp3) break L2;
          temp_frames_160060[i_160051].Field0 = it_160049.procname;
          temp_frames_160060[i_160051].Field1 = it_160049.line;
          i_160051 += 1;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    L4: do {
        L5: while (true) {
        if (!!((it_160049 == null))) break L5;
          total_160053 += 1;
          it_160049 = it_160049.prev;
        }
    } while(false);
    result_160041[0] = nimCopy(null, [], NTI112);
    if (!((total_160053 == i_160051))) {
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("(")); } else { result_160041[0] = makeNimstrLit("("); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr(((total_160053 - i_160051))+"")); } else { result_160041[0] = cstrToNimstr(((total_160053 - i_160051))+"").slice(); };
    if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(" calls omitted) ...\x0A")); } else { result_160041[0] = makeNimstrLit(" calls omitted) ...\x0A"); };
    }
    L6: do {
      var j_175236 = 0;
      var colontmp__635227 = 0;
      colontmp__635227 = (i_160051 - 1);
      var res_635232 = colontmp__635227;
      L7: do {
          L8: while (true) {
          if (!(0 <= res_635232)) break L8;
            j_175236 = res_635232;
            add_142042(result_160041, 0, temp_frames_160060[j_175236].Field0);
            if ((0 < temp_frames_160060[j_175236].Field1)) {
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(", line: ")); } else { result_160041[0] = makeNimstrLit(", line: "); };
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr((temp_frames_160060[j_175236].Field1)+"")); } else { result_160041[0] = cstrToNimstr((temp_frames_160060[j_175236].Field1)+"").slice(); };
            }
            if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("\x0A")); } else { result_160041[0] = makeNimstrLit("\x0A"); };
            res_635232 -= 1;
          }
      } while(false);
    } while(false);
  return result_160041[0];
}
function raw_write_stack_trace_180059() {
  var result_180061 = null;
    if (!((framePtr == null))) {
    result_180061 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(aux_write_stack_trace_160038(framePtr) || []), NTI112);
    }
    else {
      result_180061 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI112);
    }
  return result_180061;
}
function new_seq_225128(len_225131) {
  var result_225133 = null;
    result_225133 = new Array(len_225131); for (var i=0;i<len_225131;++i) {result_225133[i]=null;}
  return result_225133;
}
function unhandledException(e_185059) {
    var buf_185060 = [[]];
    if (!(((e_185059.message != null ? e_185059.message.length : 0) == 0))) {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception: ")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception: "); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(e_185059.message); } else { buf_185060[0] = e_185059.message.slice(); };
    }
    else {
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception"); };
    }
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit(" [")); } else { buf_185060[0] = makeNimstrLit(" ["); };
    add_142042(buf_185060, 0, e_185059.name);
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("]\x0A")); } else { buf_185060[0] = makeNimstrLit("]\x0A"); };
    if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(raw_write_stack_trace_180059()); } else { buf_185060[0] = raw_write_stack_trace_180059().slice(); };
    var cbuf_190201 = toJSStr(buf_185060[0]);
    framePtr = null;
      if (typeof(Error) !== "undefined") {
    throw new Error(cbuf_190201);
  }
  else {
    throw cbuf_190201;
  }
}
function sys_fatal_102618(message_102622) {
    raiseException({message: nimCopy(null, message_102622, NTI112), m_type: NTI6241, parent: null, name: null, trace: null, up: null}, "AssertionError");
}
function raise_assert_102614(msg_102616) {
    sys_fatal_102618(msg_102616);
}
function failed_assert_impl_102680(msg_102682) {
    raise_assert_102614(msg_102682);
}
          var Tmp5;
var s_622003 = [[]];
L1: do {
  var c_622005 = [0];
  var i_635217 = 0;
  var l_635218 = 5;
  L2: do {
      L3: while (true) {
      if (!(i_635217 < l_635218)) break L3;
        c_622005[0] = makeNimstrLit("1_2_3")[i_635217];
        L4: do {
          if (contains_625072(HEX2EHEX2E_625001(48, 57), c_622005[0])) {
          Tmp5 = c_622005[0];
          }
          else {
            break L4;
          }
        } while(false);
        if (s_622003[0] != null) { addChar(s_622003[0], Tmp5); } else { s_622003[0] = [Tmp5]; };
        i_635217 += 1;
        if (!((5 == l_635218))) {
        failed_assert_impl_102680(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.2.0/lib/system/iterators.nim(207, 11) `len(a) == L` the length of the string changed while iterating over it"));
        }
      }
  } while(false);
} while(false);
if (!(eqStrings(s_622003[0], makeNimstrLit("123")))) {
failed_assert_impl_102680(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

🤖 Bug found in 50 minutes bisecting 7 commits at 0 commits per second.

[juancarlospaco]

Problem is that is not valid code?, like continue and raise is not char whatsoever, takes invalid code.

[hamidb80]

Problem is that is not valid code?

Sure it's a valid code, take a look at no_return pragma

[metagn]

It is valid code, statements that halt execution are accepted as branches of if/case/try expressions, but I can't find where this is documented to work. The alternative the manual says the continue statement is sugar for also doesn't work:

func number(lit: string): string =
  for b in lit:
    block iter:
      result.add:
        if b in '0'..'9': b
        elif b == '_': break iter
        else: raise newException(ValueError, "not a valid digit")

let s = number "1_2_3"
echo s, " ", s.len

[juancarlospaco]

When its result.add(continue) what that suppose to mean?.

[metagn]

According to evaluation order, as the second argument of the call (after result), the continue statement gets executed, so add is not called. Although result.add(continue) will not compile, because continue doesn't have a type. if false: continue else: 123 does.

For example, in Rust, it does have a type (()/!), so it works.

fn main() {
    let mut a: Vec<i64> = vec![];
    for _ in 0..5 {
        a.push(continue);
    }
    println!("{:?}", a); // []
}

You might have better understanding when learning about language features in the real time chats like Discord rather than the issue tracker.

[Araq]

Control flow within a single call that leads to the cancellation of the call itself is highly questionable style and shouldn't compile but of course existing code ("exceptions are bad!") now depends on it and we have to keep supporting it.

[juancarlospaco]

But 2.0 is a great excuse to fix it...

[metagn]

So this works on every other backend, people probably use it, it's not particularly unsound as evidenced by it being in other languages, but you are suggesting to add logic (that would be nontrivial and arbitrary) to disallow it in 2.0 that has been in wait for 2 years and is supposed to come out this month, with there being no prior discussion on removing this than this issue that 4 people have interacted with. Would be great if you could cool it on the platitudes for the sake of productivity

[hamidb80]

!nim js

var s = ""
for c in "1_2_3": s.add(if c in '0'..'9': c else: continue)
doAssert s == "123"

[github-actions]

🐧 Linux bisect by @hamidb80 (contributor)

devel 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:537
    throw new Error(cbuf_33556640);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 1) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:537:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:296:5)
    at sysFatal__stdZassertions_u45 (/home/runner/work/Nim/Nim/temp:649:5)
    at raiseAssert__stdZassertions_u43 (/home/runner/work/Nim/Nim/temp:655:5)
    at failedAssertImpl__stdZassertions_u85 (/home/runner/work/Nim/Nim/temp:661:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:696:1)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
    at Module.load (node:internal/modules/cjs/loader:1203:32)
    at Module._load (node:internal/modules/cjs/loader:1019:12)

Node.js v18.20.4
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp'
assertions.nim(34)       raiseAssert
Error: unhandled exception: errGenerated [AssertionDefect]

IR

Compiled filesize 21.44 Kb (21,950 bytes)

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI134217745 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554448 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI520093705 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI134217749 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217751 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554435 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555822 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555163 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555171 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554449 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554450 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555170 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555167 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555168 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217741 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217743 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI134217743 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217743.node = NNI134217743;
var NNI134217741 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217741.node = NNI134217741;
var NNI33555168 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555168.node = NNI33555168;
NTI33555170.base = NTI33555167;
NTI33555171.base = NTI33555167;
var NNI33555167 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555170, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554450, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554449, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554449, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555171, name: "up", sons: null}]};
NTI33555167.node = NNI33555167;
var NNI33555163 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555163.node = NNI33555163;
NTI33555167.base = NTI33555163;
NTI33555168.base = NTI33555167;
NTI134217741.base = NTI33555168;
NTI134217743.base = NTI134217741;
var NNI33555822 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554450, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554435, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554450, name: "Field2", sons: null}]};
NTI33555822.node = NNI33555822;
var NNI134217751 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217751.node = NNI134217751;
NTI134217751.base = NTI33555168;
var NNI134217749 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217749.node = NNI134217749;
NTI134217749.base = NTI33555168;
var NNI520093705 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554448, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554448, name: "b", sons: null}]};
NTI520093705.node = NNI520093705;
var NNI134217745 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217745.node = NNI134217745;
NTI134217745.base = NTI33555168;
function mnewString(len_p0) {
  var result = new Array(len_p0);
 for (var i = 0; i < len_p0; i++) {result[i] = 0;}
 return result;
}
function arrayConstr(len_p0, value_p1, typ_p2) {
  var result = new Array(len_p0);
 for (var i = 0; i < len_p0; ++i) result[i] = nimCopy(null, value_p1, typ_p2);
 return result;
}
function setConstr() {
  var result = {};
 for (var i = 0; i < arguments.length; ++i) {
 var x = arguments[i];
 if (typeof(x) == "object") {
  for (var j = x[0]; j <= x[1]; ++j) {
  result[j] = true;
  }
 } else {
  result[x] = true;
 }
 }
 return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_p0, src_p1, ti_p2) {
var result_33557269 = null;
 switch (ti_p2.kind) {
 case 21:
 case 22:
 case 23:
 case 5:
 if (!(isFatPointer__system_u2817(ti_p2))) {
 result_33557269 = src_p1;
 }
 else {
  result_33557269 = [src_p1[0], src_p1[1]];
 }
 break;
 case 19:
   if (dest_p0 === null || dest_p0 === undefined) {
  dest_p0 = {};
 }
 else {
  for (var key in dest_p0) { delete dest_p0[key]; }
 }
 for (var key in src_p1) { dest_p0[key] = src_p1[key]; }
 result_33557269 = dest_p0;
 break;
 case 18:
 case 17:
 if (!((ti_p2.base == null))) {
 result_33557269 = nimCopy(dest_p0, src_p1, ti_p2.base);
 }
 else {
 if ((ti_p2.kind == 17)) {
 result_33557269 = (dest_p0 === null || dest_p0 === undefined) ? {m_type: ti_p2} : dest_p0;
 }
 else {
  result_33557269 = (dest_p0 === null || dest_p0 === undefined) ? {} : dest_p0;
 }
 }
 nimCopyAux(result_33557269, src_p1, ti_p2.node);
 break;
 case 4:
 case 16:
   if(ArrayBuffer.isView(src_p1)) { 
  if(dest_p0 === null || dest_p0 === undefined || dest_p0.length != src_p1.length) {
  dest_p0 = new src_p1.constructor(src_p1);
  } else {
  dest_p0.set(src_p1, 0);
  }
  result_33557269 = dest_p0;
 } else {
  if (src_p1 === null) {
  result_33557269 = null;
  }
  else {
  if (dest_p0 === null || dest_p0 === undefined || dest_p0.length != src_p1.length) {
   dest_p0 = new Array(src_p1.length);
  }
  result_33557269 = dest_p0;
  for (var i = 0; i < src_p1.length; ++i) {
   result_33557269[i] = nimCopy(result_33557269[i], src_p1[i], ti_p2.base);
  }
  }
 }
 break;
 case 24:
 case 27:
   if (src_p1 === null) {
  result_33557269 = null;
 }
 else {
  if (dest_p0 === null || dest_p0 === undefined || dest_p0.length != src_p1.length) {
  dest_p0 = new Array(src_p1.length);
  }
  result_33557269 = dest_p0;
  for (var i = 0; i < src_p1.length; ++i) {
  result_33557269[i] = nimCopy(result_33557269[i], src_p1[i], ti_p2.base);
  }
 }
 break;
 case 28:
   if (src_p1 !== null) {
  result_33557269 = src_p1.slice(0);
 }
 break;
 default: 
 result_33557269 = src_p1;
 break;
 }
return result_33557269;
}
function cstrToNimstr(c_p0) {
 var ln = c_p0.length;
var result = new Array(ln);
var r = 0;
for (var i = 0; i < ln; ++i) {
 var ch = c_p0.charCodeAt(i);
 if (ch < 128) {
 result[r] = ch;
 }
 else {
 if (ch < 2048) {
  result[r] = (ch >> 6) | 192;
 }
 else {
  if (ch < 55296 || ch >= 57344) {
  result[r] = (ch >> 12) | 224;
  }
  else {
   ++i;
   ch = 65536 + (((ch & 1023) << 10) | (c_p0.charCodeAt(i) & 1023));
   result[r] = (ch >> 18) | 240;
   ++r;
   result[r] = ((ch >> 12) & 63) | 128;
  }
  ++r;
  result[r] = ((ch >> 6) & 63) | 128;
 }
 ++r;
 result[r] = (ch & 63) | 128;
 }
 ++r;
}
return result;
}
function toJSStr(s_p0) {
var result_33556891 = null;
 var res_33556932 = newSeq__system_u2476((s_p0).length);
 var i_33556933 = 0;
 var j_33556934 = 0;
 Label1: {
  Label2: while (true) {
  if (!(i_33556933 < (s_p0).length)) break Label2;
  var c_33556935 = s_p0[i_33556933];
  if ((c_33556935 < 128)) {
  res_33556932[j_33556934] = String.fromCharCode(c_33556935);
  i_33556933 += 1;
  }
  else {
   var helper_33556947 = newSeq__system_u2476(0);
   Label3: {
    Label4: while (true) {
    if (!true) break Label4;
    var code_33556948 = c_33556935.toString(16);
    if ((((code_33556948) == null ? 0 : (code_33556948).length) == 1)) {
    helper_33556947.push("%0");;
    }
    else {
    helper_33556947.push("%");;
    }
    helper_33556947.push(code_33556948);;
    i_33556933 += 1;
    if ((((s_p0).length <= i_33556933) || (s_p0[i_33556933] < 128))) {
    break Label3;
    }
    c_33556935 = s_p0[i_33556933];
    }
   };
++excHandler;
   try {
   res_33556932[j_33556934] = decodeURIComponent(helper_33556947.join(""));
--excHandler;
} catch (EXCEPTION) {
var prevJSError = lastJSError;
lastJSError = EXCEPTION;
--excHandler;
   res_33556932[j_33556934] = helper_33556947.join("");
   lastJSError = prevJSError;
   } finally {
   }
  }
  j_33556934 += 1;
  }
 };
 if (res_33556932.length < j_33556934) { for (var i = res_33556932.length ; i < j_33556934 ; ++i) res_33556932.push(null); }
   else { res_33556932.length = j_33556934; };
 result_33556891 = res_33556932.join("");
return result_33556891;
}
function raiseException(e_p0, ename_p1) {
 e_p0.name = ename_p1;
 if ((excHandler == 0)) {
 unhandledException(e_p0);
 }
 e_p0.trace = nimCopy(null, rawWriteStackTrace__system_u2161(), NTI33554449);
 throw e_p0;
}
function addInt(a_p0, b_p1) {
  var result = a_p0 + b_p1;
 checkOverflowInt(result);
 return result;
}
function chckRange(i_p0, a_p1, b_p2) {
var result_33557309 = 0;
BeforeRet: {
 if (((a_p1 <= i_p0) && (i_p0 <= b_p2))) {
 result_33557309 = i_p0;
 break BeforeRet;
 }
 else {
 raiseRangeError();
 }
};
return result_33557309;
}
function chckIndx(i_p0, a_p1, b_p2) {
var result_33557304 = 0;
BeforeRet: {
 if (((a_p1 <= i_p0) && (i_p0 <= b_p2))) {
 result_33557304 = i_p0;
 break BeforeRet;
 }
 else {
 raiseIndexError(i_p0, a_p1, b_p2);
 }
};
return result_33557304;
}
function addChar(x_p0, c_p1) {
 x_p0.push(c_p1);
}
function makeNimstrLit(c_p0) {
 var result = [];
for (var i = 0; i < c_p0.length; ++i) {
 result[i] = c_p0.charCodeAt(i);
}
return result;
}
function eqStrings(a_p0, b_p1) {
  if (a_p0 == b_p1) return true;
 if (a_p0 === null && b_p1.length == 0) return true;
 if (b_p1 === null && a_p0.length == 0) return true;
 if ((!a_p0) || (!b_p1)) return false;
 var alen = a_p0.length;
 if (alen != b_p1.length) return false;
 for (var i = 0; i < alen; ++i)
 if (a_p0[i] != b_p1[i]) return false;
 return true;
}
function add__system_u1931(x_p0, x_p0_Idx, y_p1) {
  if (x_p0[x_p0_Idx] === null) { x_p0[x_p0_Idx] = []; }
 var off = x_p0[x_p0_Idx].length;
 x_p0[x_p0_Idx].length += y_p1.length;
 for (var i = 0; i < y_p1.length; ++i) {
  x_p0[x_p0_Idx][off+i] = y_p1.charCodeAt(i);
 }
}
function isFatPointer__system_u2817(ti_p0) {
var result_33557251 = false;
BeforeRet: {
 result_33557251 = !((ConstSet1[ti_p0.base.kind] != undefined));
 break BeforeRet;
};
return result_33557251;
}
function nimCopyAux(dest_p0, src_p1, n_p2) {
 switch (n_p2.kind) {
 case 0:
 break;
 case 1:
   dest_p0[n_p2.offset] = nimCopy(dest_p0[n_p2.offset], src_p1[n_p2.offset], n_p2.typ);
 break;
 case 2:
  for (var i = 0; i < n_p2.sons.length; i++) {
 nimCopyAux(dest_p0, src_p1, n_p2.sons[i]);
 }
 break;
 case 3:
   dest_p0[n_p2.offset] = nimCopy(dest_p0[n_p2.offset], src_p1[n_p2.offset], n_p2.typ);
 for (var i = 0; i < n_p2.sons.length; ++i) {
  nimCopyAux(dest_p0, src_p1, n_p2.sons[i][1]);
 }
 break;
 }
}
function auxWriteStackTrace__system_u2068(f_p0) {
var result_33556502 = [[]];
 var it_33556510 = f_p0;
 var i_33556511 = 0;
 var total_33556512 = 0;
 var tempFrames_33556513 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555822);
 Label1: {
  Label2: while (true) {
  if (!(!((it_33556510 == null)) && (i_33556511 <= 63))) break Label2;
  tempFrames_33556513[i_33556511].Field0 = it_33556510.procname;
  tempFrames_33556513[i_33556511].Field1 = it_33556510.line;
  tempFrames_33556513[i_33556511].Field2 = it_33556510.filename;
  i_33556511 += 1;
  total_33556512 += 1;
  it_33556510 = it_33556510.prev;
  }
 };
 Label3: {
  Label4: while (true) {
  if (!!((it_33556510 == null))) break Label4;
  total_33556512 += 1;
  it_33556510 = it_33556510.prev;
  }
 };
 result_33556502[0] = nimCopy(null, [], NTI33554449);
 if (!((total_33556512 == i_33556511))) {
 result_33556502[0].push.apply(result_33556502[0], [40]);;
 result_33556502[0].push.apply(result_33556502[0], HEX24__systemZdollars_u8((total_33556512 - i_33556511)));;
 result_33556502[0].push.apply(result_33556502[0], [32,99,97,108,108,115,32,111,109,105,116,116,101,100,41,32,46,46,46,10]);;
 }
 Label5: {
 var j_33556543 = 0;
 var colontmp__520093771 = 0;
 colontmp__520093771 = (i_33556511 - 1);
 var res_520093773 = colontmp__520093771;
 Label6: {
  Label7: while (true) {
  if (!(0 <= res_520093773)) break Label7;
   j_33556543 = res_520093773;
   result_33556502[0].push.apply(result_33556502[0], cstrToNimstr(tempFrames_33556513[j_33556543].Field2));;
   if ((0 < tempFrames_33556513[j_33556543].Field1)) {
   result_33556502[0].push.apply(result_33556502[0], [40]);;
   addInt__stdZprivateZdigitsutils_u238(result_33556502, 0, tempFrames_33556513[j_33556543].Field1);
   if (false) {
   result_33556502[0].push.apply(result_33556502[0], [44,32]);;
   addInt__stdZprivateZdigitsutils_u238(result_33556502, 0, 0);
   }
   result_33556502[0].push.apply(result_33556502[0], [41]);;
   }
   result_33556502[0].push.apply(result_33556502[0], [32,97,116,32]);;
   add__system_u1931(result_33556502, 0, tempFrames_33556513[j_33556543].Field0);
   result_33556502[0].push.apply(result_33556502[0], [10]);;
   res_520093773 -= 1;
  }
 };
 };
return result_33556502[0];
}
function rawWriteStackTrace__system_u2161() {
var result_33556594 = [];
 if (!((framePtr == null))) {
 result_33556594 = nimCopy(null, ([84,114,97,99,101,98,97,99,107,32,40,109,111,115,116,32,114,101,99,101,110,116,32,99,97,108,108,32,108,97,115,116,41,10]).concat(auxWriteStackTrace__system_u2068(framePtr)), NTI33554449);
 }
 else {
 result_33556594 = nimCopy(null, [78,111,32,115,116,97,99,107,32,116,114,97,99,101,98,97,99,107,32,97,118,97,105,108,97,98,108,101,10], NTI33554449);
 }
return result_33556594;
}
function newSeq__system_u2476(len_p0) {
var result_33556911 = [];
 result_33556911 = new Array(len_p0); for (var i = 0 ; i < len_p0 ; ++i) { result_33556911[i] = null; }
return result_33556911;
}
function unhandledException(e_p0) {
 var buf_33556639 = [[]];
 if (!(((e_p0.message).length == 0))) {
 buf_33556639[0].push.apply(buf_33556639[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110,58,32]);;
 buf_33556639[0].push.apply(buf_33556639[0], e_p0.message);;
 }
 else {
 buf_33556639[0].push.apply(buf_33556639[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110]);;
 }
 buf_33556639[0].push.apply(buf_33556639[0], [32,91]);;
 add__system_u1931(buf_33556639, 0, e_p0.name);
 buf_33556639[0].push.apply(buf_33556639[0], [93,10]);;
 buf_33556639[0].push.apply(buf_33556639[0], rawWriteStackTrace__system_u2161());;
 var cbuf_33556640 = toJSStr(buf_33556639[0]);
 framePtr = null;
 if (typeof(Error) !== "undefined") {
 throw new Error(cbuf_33556640);
}
else {
 throw cbuf_33556640;
}
}
function raiseOverflow() {
 raiseException({message: [111,118,101,114,45,32,111,114,32,117,110,100,101,114,102,108,111,119], parent: null, m_type: NTI134217743, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_p0) {
  if (a_p0 > 2147483647 || a_p0 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
 raiseException({message: [118,97,108,117,101,32,111,117,116,32,111,102,32,114,97,110,103,101], parent: null, m_type: NTI134217751, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars__stdZprivateZdigitsutils_u199(result_p0, result_p0_Idx, x_p1, start_p2, n_p3) {
 var Temporary1;
 var old_301990093 = (result_p0[result_p0_Idx]).length;
 if (result_p0[result_p0_Idx].length < (Temporary1 = chckRange(addInt(old_301990093, n_p3), 0, 2147483647), Temporary1)) { for (var i = result_p0[result_p0_Idx].length; i < Temporary1; ++i) result_p0[result_p0_Idx].push(0); }
  else {result_p0[result_p0_Idx].length = Temporary1; };
 Label2: {
 var iHEX60gensym4_301990107 = 0;
 var i_520093766 = 0;
 Label3: {
  Label4: while (true) {
  if (!(i_520093766 < n_p3)) break Label4;
   iHEX60gensym4_301990107 = i_520093766;
   result_p0[result_p0_Idx][chckIndx(addInt(old_301990093, iHEX60gensym4_301990107), 0, (result_p0[result_p0_Idx]).length - 1)] = x_p1.charCodeAt(chckIndx(addInt(start_p2, iHEX60gensym4_301990107), 0, (x_p1).length - 1));
   i_520093766 = addInt(i_520093766, 1);
  }
 };
 };
}
function addChars__stdZprivateZdigitsutils_u195(result_p0, result_p0_Idx, x_p1) {
 addChars__stdZprivateZdigitsutils_u199(result_p0, result_p0_Idx, x_p1, 0, ((x_p1) == null ? 0 : (x_p1).length));
}
function addInt__stdZprivateZdigitsutils_u220(result_p0, result_p0_Idx, x_p1) {
 addChars__stdZprivateZdigitsutils_u195(result_p0, result_p0_Idx, ((x_p1) + ""));
}
function addInt__stdZprivateZdigitsutils_u238(result_p0, result_p0_Idx, x_p1) {
 addInt__stdZprivateZdigitsutils_u220(result_p0, result_p0_Idx, BigInt(x_p1));
}
function HEX24__systemZdollars_u8(x_p0) {
var result_369098762 = [[]];
 addInt__stdZprivateZdigitsutils_u238(result_369098762, 0, x_p0);
return result_369098762[0];
}
function raiseIndexError(i_p0, a_p1, b_p2) {
 var Temporary1;
 if ((b_p2 < a_p1)) {
 Temporary1 = [105,110,100,101,120,32,111,117,116,32,111,102,32,98,111,117,110,100,115,44,32,116,104,101,32,99,111,110,116,97,105,110,101,114,32,105,115,32,101,109,112,116,121];
 }
 else {
 Temporary1 = ([105,110,100,101,120,32]).concat(HEX24__systemZdollars_u8(i_p0),[32,110,111,116,32,105,110,32],HEX24__systemZdollars_u8(a_p1),[32,46,46,32],HEX24__systemZdollars_u8(b_p2));
 }
 raiseException({message: nimCopy(null, Temporary1, NTI33554449), parent: null, m_type: NTI134217749, name: null, trace: [], up: null}, "IndexDefect");
}
function contains__temp_u48(s_p0, value_p1) {
var result_520093750 = false;
 result_520093750 = ((s_p0.a <= value_p1) && (value_p1 <= s_p0.b));
return result_520093750;
}
function HEX2EHEX2E__temp_u3(a_p0, b_p1) {
var result_520093706 = ({a: 0, b: 0});
 result_520093706 = nimCopy(result_520093706, {a: a_p0, b: b_p1}, NTI520093705);
return result_520093706;
}
function sysFatal__stdZassertions_u45(message_p1) {
 raiseException({message: nimCopy(null, message_p1, NTI33554449), m_type: NTI134217745, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert__stdZassertions_u43(msg_p0) {
 sysFatal__stdZassertions_u45(msg_p0);
}
function failedAssertImpl__stdZassertions_u85(msg_p0) {
 raiseAssert__stdZassertions_u43(msg_p0);
}
  var Temporary5;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_520093697 = [[]];
Label1: {
var c_520093698 = [0];
var i_520093759 = 0;
var L_520093760 = 5;
Label2: {
 Label3: while (true) {
 if (!(i_520093759 < L_520093760)) break Label3;
  c_520093698[0] = [49,95,50,95,51][chckIndx(i_520093759, 0, ([49,95,50,95,51]).length - 1)];
  Label4: {
  if (contains__temp_u48(HEX2EHEX2E__temp_u3(48, 57), c_520093698[0])) {
  Temporary5 = c_520093698[0];
  }
  else {
   break Label4;
  }
  };
  addChar(s_520093697[0], Temporary5);;
  i_520093759 += 1;
  if (!((5 == L_520093760))) {
  failedAssertImpl__stdZassertions_u85(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-#devel/lib/system/iterators.nim(272, 11) `len(a) == L` the length of the string changed while iterating over it"));
  }
 }
};
};
if (!(eqStrings(s_520093697[0], [49,50,51]))) {
failedAssertImpl__stdZassertions_u85([47,104,111,109,101,47,114,117,110,110,101,114,47,119,111,114,107,47,78,105,109,47,78,105,109,47,116,101,109,112,46,110,105,109,40,51,44,32,49,41,32,96,115,32,61,61,32,34,49,50,51,34,96,32]);
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

Stats

• Started 2024-08-03T19:34:18
• Finished 2024-08-03T19:34:18
• Duration

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

stable 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:537
    throw new Error(cbuf_33556651);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 1) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:537:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:296:5)
    at sysFatal_268435501 (/home/runner/work/Nim/Nim/temp:649:5)
    at raiseAssert_268435499 (/home/runner/work/Nim/Nim/temp:655:5)
    at failedAssertImpl_268435541 (/home/runner/work/Nim/Nim/temp:661:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:696:1)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
    at Module.load (node:internal/modules/cjs/loader:1203:32)
    at Module._load (node:internal/modules/cjs/loader:1019:12)

Node.js v18.20.4
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp'
assertions.nim(34)       raiseAssert
Error: unhandled exception: options.nim(682, 5) `false` errGenerated [AssertionDefect]

IR

Compiled filesize 22.73 Kb (23,271 bytes)

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI134217745 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554448 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI520093705 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI134217749 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217751 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554435 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555838 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555173 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555181 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554449 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554450 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555180 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555177 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555178 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217741 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217743 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI134217743 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217743.node = NNI134217743;
var NNI134217741 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217741.node = NNI134217741;
var NNI33555178 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555178.node = NNI33555178;
NTI33555180.base = NTI33555177;
NTI33555181.base = NTI33555177;
var NNI33555177 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555180, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554450, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554449, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554449, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555181, name: "up", sons: null}]};
NTI33555177.node = NNI33555177;
var NNI33555173 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555173.node = NNI33555173;
NTI33555177.base = NTI33555173;
NTI33555178.base = NTI33555177;
NTI134217741.base = NTI33555178;
NTI134217743.base = NTI134217741;
var NNI33555838 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554450, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554435, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554450, name: "Field2", sons: null}]};
NTI33555838.node = NNI33555838;
var NNI134217751 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217751.node = NNI134217751;
NTI134217751.base = NTI33555178;
var NNI134217749 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217749.node = NNI134217749;
NTI134217749.base = NTI33555178;
var NNI520093705 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554448, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554448, name: "b", sons: null}]};
NTI520093705.node = NNI520093705;
var NNI134217745 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217745.node = NNI134217745;
NTI134217745.base = NTI33555178;
function mnewString(len_33557003) {
  var result = new Array(len_33557003);
 for (var i = 0; i < len_33557003; i++) {result[i] = 0;}
 return result;
}
function arrayConstr(len_33557314, value_33557315, typ_33557316) {
  var result = new Array(len_33557314);
 for (var i = 0; i < len_33557314; ++i) result[i] = nimCopy(null, value_33557315, typ_33557316);
 return result;
}
function setConstr() {
  var result = {};
 for (var i = 0; i < arguments.length; ++i) {
 var x = arguments[i];
 if (typeof(x) == "object") {
  for (var j = x[0]; j <= x[1]; ++j) {
  result[j] = true;
  }
 } else {
  result[x] = true;
 }
 }
 return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557268, src_33557269, ti_33557270) {
var result_33557279 = null;
 switch (ti_33557270.kind) {
 case 21:
 case 22:
 case 23:
 case 5:
 if (!(isFatPointer_33557259(ti_33557270))) {
 result_33557279 = src_33557269;
 }
 else {
  result_33557279 = [src_33557269[0], src_33557269[1]];
 }
 break;
 case 19:
   if (dest_33557268 === null || dest_33557268 === undefined) {
  dest_33557268 = {};
 }
 else {
  for (var key in dest_33557268) { delete dest_33557268[key]; }
 }
 for (var key in src_33557269) { dest_33557268[key] = src_33557269[key]; }
 result_33557279 = dest_33557268;
 break;
 case 18:
 case 17:
 if (!((ti_33557270.base == null))) {
 result_33557279 = nimCopy(dest_33557268, src_33557269, ti_33557270.base);
 }
 else {
 if ((ti_33557270.kind == 17)) {
 result_33557279 = (dest_33557268 === null || dest_33557268 === undefined) ? {m_type: ti_33557270} : dest_33557268;
 }
 else {
  result_33557279 = (dest_33557268 === null || dest_33557268 === undefined) ? {} : dest_33557268;
 }
 }
 nimCopyAux(result_33557279, src_33557269, ti_33557270.node);
 break;
 case 4:
 case 16:
   if(ArrayBuffer.isView(src_33557269)) { 
  if(dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
  dest_33557268 = new src_33557269.constructor(src_33557269);
  } else {
  dest_33557268.set(src_33557269, 0);
  }
  result_33557279 = dest_33557268;
 } else {
  if (src_33557269 === null) {
  result_33557279 = null;
  }
  else {
  if (dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
   dest_33557268 = new Array(src_33557269.length);
  }
  result_33557279 = dest_33557268;
  for (var i = 0; i < src_33557269.length; ++i) {
   result_33557279[i] = nimCopy(result_33557279[i], src_33557269[i], ti_33557270.base);
  }
  }
 }
 break;
 case 24:
 case 27:
   if (src_33557269 === null) {
  result_33557279 = null;
 }
 else {
  if (dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
  dest_33557268 = new Array(src_33557269.length);
  }
  result_33557279 = dest_33557268;
  for (var i = 0; i < src_33557269.length; ++i) {
  result_33557279[i] = nimCopy(result_33557279[i], src_33557269[i], ti_33557270.base);
  }
 }
 break;
 case 28:
   if (src_33557269 !== null) {
  result_33557279 = src_33557269.slice(0);
 }
 break;
 default: 
 result_33557279 = src_33557269;
 break;
 }
return result_33557279;
}
function cstrToNimstr(c_33556898) {
 var ln = c_33556898.length;
var result = new Array(ln);
var r = 0;
for (var i = 0; i < ln; ++i) {
 var ch = c_33556898.charCodeAt(i);
 if (ch < 128) {
 result[r] = ch;
 }
 else {
 if (ch < 2048) {
  result[r] = (ch >> 6) | 192;
 }
 else {
  if (ch < 55296 || ch >= 57344) {
  result[r] = (ch >> 12) | 224;
  }
  else {
   ++i;
   ch = 65536 + (((ch & 1023) << 10) | (c_33556898.charCodeAt(i) & 1023));
   result[r] = (ch >> 18) | 240;
   ++r;
   result[r] = ((ch >> 12) & 63) | 128;
  }
  ++r;
  result[r] = ((ch >> 6) & 63) | 128;
 }
 ++r;
 result[r] = (ch & 63) | 128;
 }
 ++r;
}
return result;
}
function toJSStr(s_33556901) {
var result_33556902 = null;
 var res_33556943 = newSeq_33556919((s_33556901).length);
 var i_33556944 = 0;
 var j_33556945 = 0;
 Label1: {
  Label2: while (true) {
  if (!(i_33556944 < (s_33556901).length)) break Label2;
  var c_33556946 = s_33556901[i_33556944];
  if ((c_33556946 < 128)) {
  res_33556943[j_33556945] = String.fromCharCode(c_33556946);
  i_33556944 += 1;
  }
  else {
   var helper_33556959 = newSeq_33556919(0);
   Label3: {
    Label4: while (true) {
    if (!true) break Label4;
    var code_33556960 = c_33556946.toString(16);
    if ((((code_33556960) == null ? 0 : (code_33556960).length) == 1)) {
    helper_33556959.push("%0");;
    }
    else {
    helper_33556959.push("%");;
    }
    helper_33556959.push(code_33556960);;
    i_33556944 += 1;
    if ((((s_33556901).length <= i_33556944) || (s_33556901[i_33556944] < 128))) {
    break Label3;
    }
    c_33556946 = s_33556901[i_33556944];
    }
   };
++excHandler;
   try {
   res_33556943[j_33556945] = decodeURIComponent(helper_33556959.join(""));
--excHandler;
} catch (EXCEPTION) {
var prevJSError = lastJSError;
lastJSError = EXCEPTION;
--excHandler;
   res_33556943[j_33556945] = helper_33556959.join("");
   lastJSError = prevJSError;
   } finally {
   }
  }
  j_33556945 += 1;
  }
 };
 if (res_33556943.length < j_33556945) { for (var i = res_33556943.length ; i < j_33556945 ; ++i) res_33556943.push(null); }
   else { res_33556943.length = j_33556945; };
 result_33556902 = res_33556943.join("");
return result_33556902;
}
function raiseException(e_33556653, ename_33556654) {
 e_33556653.name = ename_33556654;
 if ((excHandler == 0)) {
 unhandledException(e_33556653);
 }
 e_33556653.trace = nimCopy(null, rawWriteStackTrace_33556604(), NTI33554449);
 throw e_33556653;
}
function addInt(a_33557050, b_33557051) {
  var result = a_33557050 + b_33557051;
 checkOverflowInt(result);
 return result;
}
function chckRange(i_33557324, a_33557325, b_33557326) {
var result_33557327 = 0;
BeforeRet: {
 if (((a_33557325 <= i_33557324) && (i_33557324 <= b_33557326))) {
 result_33557327 = i_33557324;
 break BeforeRet;
 }
 else {
 raiseRangeError();
 }
};
return result_33557327;
}
function chckIndx(i_33557319, a_33557320, b_33557321) {
var result_33557322 = 0;
BeforeRet: {
 if (((a_33557320 <= i_33557319) && (i_33557319 <= b_33557321))) {
 result_33557322 = i_33557319;
 break BeforeRet;
 }
 else {
 raiseIndexError(i_33557319, a_33557320, b_33557321);
 }
};
return result_33557322;
}
function addChar(x_33557415, c_33557416) {
 x_33557415.push(c_33557416);
}
function makeNimstrLit(c_33556895) {
 var result = [];
for (var i = 0; i < c_33556895.length; ++i) {
 result[i] = c_33556895.charCodeAt(i);
}
return result;
}
function eqStrings(a_33557041, b_33557042) {
  if (a_33557041 == b_33557042) return true;
 if (a_33557041 === null && b_33557042.length == 0) return true;
 if (b_33557042 === null && a_33557041.length == 0) return true;
 if ((!a_33557041) || (!b_33557042)) return false;
 var alen = a_33557041.length;
 if (alen != b_33557042.length) return false;
 for (var i = 0; i < alen; ++i)
 if (a_33557041[i] != b_33557042[i]) return false;
 return true;
}
function add_33556373(x_33556374, x_33556374_Idx, y_33556375) {
  if (x_33556374[x_33556374_Idx] === null) { x_33556374[x_33556374_Idx] = []; }
 var off = x_33556374[x_33556374_Idx].length;
 x_33556374[x_33556374_Idx].length += y_33556375.length;
 for (var i = 0; i < y_33556375.length; ++i) {
  x_33556374[x_33556374_Idx][off+i] = y_33556375.charCodeAt(i);
 }
}
function isFatPointer_33557259(ti_33557260) {
var result_33557261 = false;
BeforeRet: {
 result_33557261 = !((ConstSet1[ti_33557260.base.kind] != undefined));
 break BeforeRet;
};
return result_33557261;
}
function nimCopyAux(dest_33557272, src_33557273, n_33557274) {
 switch (n_33557274.kind) {
 case 0:
 break;
 case 1:
   dest_33557272[n_33557274.offset] = nimCopy(dest_33557272[n_33557274.offset], src_33557273[n_33557274.offset], n_33557274.typ);
 break;
 case 2:
  for (var i = 0; i < n_33557274.sons.length; i++) {
 nimCopyAux(dest_33557272, src_33557273, n_33557274.sons[i]);
 }
 break;
 case 3:
   dest_33557272[n_33557274.offset] = nimCopy(dest_33557272[n_33557274.offset], src_33557273[n_33557274.offset], n_33557274.typ);
 for (var i = 0; i < n_33557274.sons.length; ++i) {
  nimCopyAux(dest_33557272, src_33557273, n_33557274.sons[i][1]);
 }
 break;
 }
}
function auxWriteStackTrace_33556508(f_33556509) {
var result_33556510 = [[]];
 var it_33556518 = f_33556509;
 var i_33556519 = 0;
 var total_33556520 = 0;
 var tempFrames_33556521 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555838);
 Label1: {
  Label2: while (true) {
  if (!(!((it_33556518 == null)) && (i_33556519 <= 63))) break Label2;
  tempFrames_33556521[i_33556519].Field0 = it_33556518.procname;
  tempFrames_33556521[i_33556519].Field1 = it_33556518.line;
  tempFrames_33556521[i_33556519].Field2 = it_33556518.filename;
  i_33556519 += 1;
  total_33556520 += 1;
  it_33556518 = it_33556518.prev;
  }
 };
 Label3: {
  Label4: while (true) {
  if (!!((it_33556518 == null))) break Label4;
  total_33556520 += 1;
  it_33556518 = it_33556518.prev;
  }
 };
 result_33556510[0] = nimCopy(null, [], NTI33554449);
 if (!((total_33556520 == i_33556519))) {
 result_33556510[0].push.apply(result_33556510[0], [40]);;
 result_33556510[0].push.apply(result_33556510[0], HEX24_369098760((total_33556520 - i_33556519)));;
 result_33556510[0].push.apply(result_33556510[0], [32,99,97,108,108,115,32,111,109,105,116,116,101,100,41,32,46,46,46,10]);;
 }
 Label5: {
 var j_33556554 = 0;
 var colontmp__520093771 = 0;
 colontmp__520093771 = (i_33556519 - 1);
 var res_520093773 = colontmp__520093771;
 Label6: {
  Label7: while (true) {
  if (!(0 <= res_520093773)) break Label7;
   j_33556554 = res_520093773;
   result_33556510[0].push.apply(result_33556510[0], cstrToNimstr(tempFrames_33556521[j_33556554].Field2));;
   if ((0 < tempFrames_33556521[j_33556554].Field1)) {
   result_33556510[0].push.apply(result_33556510[0], [40]);;
   addInt_301990129(result_33556510, 0, tempFrames_33556521[j_33556554].Field1);
   if (false) {
   result_33556510[0].push.apply(result_33556510[0], [44,32]);;
   addInt_301990129(result_33556510, 0, 0);
   }
   result_33556510[0].push.apply(result_33556510[0], [41]);;
   }
   result_33556510[0].push.apply(result_33556510[0], [32,97,116,32]);;
   add_33556373(result_33556510, 0, tempFrames_33556521[j_33556554].Field0);
   result_33556510[0].push.apply(result_33556510[0], [10]);;
   res_520093773 -= 1;
  }
 };
 };
return result_33556510[0];
}
function rawWriteStackTrace_33556604() {
var result_33556605 = [];
 if (!((framePtr == null))) {
 result_33556605 = nimCopy(null, ([84,114,97,99,101,98,97,99,107,32,40,109,111,115,116,32,114,101,99,101,110,116,32,99,97,108,108,32,108,97,115,116,41,10] || []).concat(auxWriteStackTrace_33556508(framePtr) || []), NTI33554449);
 }
 else {
 result_33556605 = nimCopy(null, [78,111,32,115,116,97,99,107,32,116,114,97,99,101,98,97,99,107,32,97,118,97,105,108,97,98,108,101,10], NTI33554449);
 }
return result_33556605;
}
function newSeq_33556919(len_33556921) {
var result_33556922 = [];
 result_33556922 = new Array(len_33556921); for (var i = 0 ; i < len_33556921 ; ++i) { result_33556922[i] = null; }
return result_33556922;
}
function unhandledException(e_33556649) {
 var buf_33556650 = [[]];
 if (!(((e_33556649.message).length == 0))) {
 buf_33556650[0].push.apply(buf_33556650[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110,58,32]);;
 buf_33556650[0].push.apply(buf_33556650[0], e_33556649.message);;
 }
 else {
 buf_33556650[0].push.apply(buf_33556650[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110]);;
 }
 buf_33556650[0].push.apply(buf_33556650[0], [32,91]);;
 add_33556373(buf_33556650, 0, e_33556649.name);
 buf_33556650[0].push.apply(buf_33556650[0], [93,10]);;
 buf_33556650[0].push.apply(buf_33556650[0], rawWriteStackTrace_33556604());;
 var cbuf_33556651 = toJSStr(buf_33556650[0]);
 framePtr = null;
 if (typeof(Error) !== "undefined") {
 throw new Error(cbuf_33556651);
}
else {
 throw cbuf_33556651;
}
}
function raiseOverflow() {
 raiseException({message: [111,118,101,114,45,32,111,114,32,117,110,100,101,114,102,108,111,119], parent: null, m_type: NTI134217743, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33557048) {
  if (a_33557048 > 2147483647 || a_33557048 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
 raiseException({message: [118,97,108,117,101,32,111,117,116,32,111,102,32,114,97,110,103,101], parent: null, m_type: NTI134217751, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_301990090(result_301990092, result_301990092_Idx, x_301990093, start_301990094, n_301990095) {
 var Temporary1;
 var old_301990096 = (result_301990092[result_301990092_Idx]).length;
 if (result_301990092[result_301990092_Idx].length < (Temporary1 = chckRange(addInt(old_301990096, n_301990095), 0, 2147483647), Temporary1)) { for (var i = result_301990092[result_301990092_Idx].length; i < Temporary1; ++i) result_301990092[result_301990092_Idx].push(0); }
  else {result_301990092[result_301990092_Idx].length = Temporary1; };
 Label2: {
 var iHEX60gensym4_301990110 = 0;
 var i_520093766 = 0;
 Label3: {
  Label4: while (true) {
  if (!(i_520093766 < n_301990095)) break Label4;
   iHEX60gensym4_301990110 = i_520093766;
   result_301990092[result_301990092_Idx][chckIndx(addInt(old_301990096, iHEX60gensym4_301990110), 0, (result_301990092[result_301990092_Idx]).length - 1)] = x_301990093.charCodeAt(chckIndx(addInt(start_301990094, iHEX60gensym4_301990110), 0, (x_301990093).length - 1));
   i_520093766 = addInt(i_520093766, 1);
  }
 };
 };
}
function addChars_301990086(result_301990088, result_301990088_Idx, x_301990089) {
 addChars_301990090(result_301990088, result_301990088_Idx, x_301990089, 0, ((x_301990089) == null ? 0 : (x_301990089).length));
}
function addInt_301990111(result_301990112, result_301990112_Idx, x_301990113) {
 addChars_301990086(result_301990112, result_301990112_Idx, ((x_301990113) + ""));
}
function addInt_301990129(result_301990130, result_301990130_Idx, x_301990131) {
 addInt_301990111(result_301990130, result_301990130_Idx, BigInt(x_301990131));
}
function HEX24_369098760(x_369098761) {
var result_369098762 = [[]];
 addInt_301990129(result_369098762, 0, x_369098761);
return result_369098762[0];
}
function raiseIndexError(i_33556812, a_33556813, b_33556814) {
 var Temporary1;
 if ((b_33556814 < a_33556813)) {
 Temporary1 = [105,110,100,101,120,32,111,117,116,32,111,102,32,98,111,117,110,100,115,44,32,116,104,101,32,99,111,110,116,97,105,110,101,114,32,105,115,32,101,109,112,116,121];
 }
 else {
 Temporary1 = ([105,110,100,101,120,32] || []).concat(HEX24_369098760(i_33556812) || [],[32,110,111,116,32,105,110,32] || [],HEX24_369098760(a_33556813) || [],[32,46,46,32] || [],HEX24_369098760(b_33556814) || []);
 }
 raiseException({message: nimCopy(null, Temporary1, NTI33554449), parent: null, m_type: NTI134217749, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_520093744(s_520093748, value_520093749) {
var result_520093750 = false;
 result_520093750 = ((s_520093748.a <= value_520093749) && (value_520093749 <= s_520093748.b));
return result_520093750;
}
function HEX2EHEX2E_520093699(a_520093702, b_520093703) {
var result_520093706 = ({a: 0, b: 0});
 result_520093706 = nimCopy(result_520093706, {a: a_520093702, b: b_520093703}, NTI520093705);
return result_520093706;
}
function sysFatal_268435501(message_268435504) {
 raiseException({message: nimCopy(null, message_268435504, NTI33554449), m_type: NTI134217745, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_268435499(msg_268435500) {
 sysFatal_268435501(msg_268435500);
}
function failedAssertImpl_268435541(msg_268435542) {
 raiseAssert_268435499(msg_268435542);
}
  var Temporary5;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_520093697 = [[]];
Label1: {
var c_520093698 = [0];
var i_520093759 = 0;
var L_520093760 = 5;
Label2: {
 Label3: while (true) {
 if (!(i_520093759 < L_520093760)) break Label3;
  c_520093698[0] = [49,95,50,95,51][chckIndx(i_520093759, 0, ([49,95,50,95,51]).length - 1)];
  Label4: {
  if (contains_520093744(HEX2EHEX2E_520093699(48, 57), c_520093698[0])) {
  Temporary5 = c_520093698[0];
  }
  else {
   break Label4;
  }
  };
  addChar(s_520093697[0], Temporary5);;
  i_520093759 += 1;
  if (!((5 == L_520093760))) {
  failedAssertImpl_268435541(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-2.0.8/lib/system/iterators.nim(272, 11) `len(a) == L` the length of the string changed while iterating over it"));
  }
 }
};
};
if (!(eqStrings(s_520093697[0], [49,50,51]))) {
failedAssertImpl_268435541([47,104,111,109,101,47,114,117,110,110,101,114,47,119,111,114,107,47,78,105,109,47,78,105,109,47,116,101,109,112,46,110,105,109,40,51,44,32,49,41,32,96,115,32,61,61,32,34,49,50,51,34,96,32]);
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

Stats

• Started 2024-08-03T19:34:22
• Finished 2024-08-03T19:34:22
• Duration

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

2.0.4 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:537
    throw new Error(cbuf_33556651);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 1) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:537:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:296:5)
    at sysFatal_268435501 (/home/runner/work/Nim/Nim/temp:649:5)
    at raiseAssert_268435499 (/home/runner/work/Nim/Nim/temp:655:5)
    at failedAssertImpl_268435541 (/home/runner/work/Nim/Nim/temp:661:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:696:1)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
    at Module.load (node:internal/modules/cjs/loader:1203:32)
    at Module._load (node:internal/modules/cjs/loader:1019:12)

Node.js v18.20.4
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp'
assertions.nim(34)       raiseAssert
Error: unhandled exception: options.nim(681, 5) `false` errGenerated [AssertionDefect]

IR

Compiled filesize 22.75 Kb (23,291 bytes)

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI134217745 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554448 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI520093705 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI134217749 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217751 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554435 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555835 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555173 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555181 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554449 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554450 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555180 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555177 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555178 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217741 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217743 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI134217743 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217743.node = NNI134217743;
var NNI134217741 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217741.node = NNI134217741;
var NNI33555178 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555178.node = NNI33555178;
NTI33555180.base = NTI33555177;
NTI33555181.base = NTI33555177;
var NNI33555177 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555180, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554450, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554449, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554449, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555181, name: "up", sons: null}]};
NTI33555177.node = NNI33555177;
var NNI33555173 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555173.node = NNI33555173;
NTI33555177.base = NTI33555173;
NTI33555178.base = NTI33555177;
NTI134217741.base = NTI33555178;
NTI134217743.base = NTI134217741;
var NNI33555835 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554450, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554435, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554450, name: "Field2", sons: null}]};
NTI33555835.node = NNI33555835;
var NNI134217751 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217751.node = NNI134217751;
NTI134217751.base = NTI33555178;
var NNI134217749 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217749.node = NNI134217749;
NTI134217749.base = NTI33555178;
var NNI520093705 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554448, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554448, name: "b", sons: null}]};
NTI520093705.node = NNI520093705;
var NNI134217745 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217745.node = NNI134217745;
NTI134217745.base = NTI33555178;
function mnewString(len_33557003) {
  var result = new Array(len_33557003);
 for (var i = 0; i < len_33557003; i++) {result[i] = 0;}
 return result;
}
function arrayConstr(len_33557314, value_33557315, typ_33557316) {
  var result = new Array(len_33557314);
 for (var i = 0; i < len_33557314; ++i) result[i] = nimCopy(null, value_33557315, typ_33557316);
 return result;
}
function setConstr() {
  var result = {};
 for (var i = 0; i < arguments.length; ++i) {
 var x = arguments[i];
 if (typeof(x) == "object") {
  for (var j = x[0]; j <= x[1]; ++j) {
  result[j] = true;
  }
 } else {
  result[x] = true;
 }
 }
 return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557268, src_33557269, ti_33557270) {
var result_33557279 = null;
 switch (ti_33557270.kind) {
 case 21:
 case 22:
 case 23:
 case 5:
 if (!(isFatPointer_33557259(ti_33557270))) {
 result_33557279 = src_33557269;
 }
 else {
  result_33557279 = [src_33557269[0], src_33557269[1]];
 }
 break;
 case 19:
   if (dest_33557268 === null || dest_33557268 === undefined) {
  dest_33557268 = {};
 }
 else {
  for (var key in dest_33557268) { delete dest_33557268[key]; }
 }
 for (var key in src_33557269) { dest_33557268[key] = src_33557269[key]; }
 result_33557279 = dest_33557268;
 break;
 case 18:
 case 17:
 if (!((ti_33557270.base == null))) {
 result_33557279 = nimCopy(dest_33557268, src_33557269, ti_33557270.base);
 }
 else {
 if ((ti_33557270.kind == 17)) {
 result_33557279 = (dest_33557268 === null || dest_33557268 === undefined) ? {m_type: ti_33557270} : dest_33557268;
 }
 else {
  result_33557279 = (dest_33557268 === null || dest_33557268 === undefined) ? {} : dest_33557268;
 }
 }
 nimCopyAux(result_33557279, src_33557269, ti_33557270.node);
 break;
 case 4:
 case 16:
   if(ArrayBuffer.isView(src_33557269)) { 
  if(dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
  dest_33557268 = new src_33557269.constructor(src_33557269);
  } else {
  dest_33557268.set(src_33557269, 0);
  }
  result_33557279 = dest_33557268;
 } else {
  if (src_33557269 === null) {
  result_33557279 = null;
  }
  else {
  if (dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
   dest_33557268 = new Array(src_33557269.length);
  }
  result_33557279 = dest_33557268;
  for (var i = 0; i < src_33557269.length; ++i) {
   result_33557279[i] = nimCopy(result_33557279[i], src_33557269[i], ti_33557270.base);
  }
  }
 }
 break;
 case 24:
 case 27:
   if (src_33557269 === null) {
  result_33557279 = null;
 }
 else {
  if (dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
  dest_33557268 = new Array(src_33557269.length);
  }
  result_33557279 = dest_33557268;
  for (var i = 0; i < src_33557269.length; ++i) {
  result_33557279[i] = nimCopy(result_33557279[i], src_33557269[i], ti_33557270.base);
  }
 }
 break;
 case 28:
   if (src_33557269 !== null) {
  result_33557279 = src_33557269.slice(0);
 }
 break;
 default: 
 result_33557279 = src_33557269;
 break;
 }
return result_33557279;
}
function cstrToNimstr(c_33556898) {
 var ln = c_33556898.length;
var result = new Array(ln);
var r = 0;
for (var i = 0; i < ln; ++i) {
 var ch = c_33556898.charCodeAt(i);
 if (ch < 128) {
 result[r] = ch;
 }
 else {
 if (ch < 2048) {
  result[r] = (ch >> 6) | 192;
 }
 else {
  if (ch < 55296 || ch >= 57344) {
  result[r] = (ch >> 12) | 224;
  }
  else {
   ++i;
   ch = 65536 + (((ch & 1023) << 10) | (c_33556898.charCodeAt(i) & 1023));
   result[r] = (ch >> 18) | 240;
   ++r;
   result[r] = ((ch >> 12) & 63) | 128;
  }
  ++r;
  result[r] = ((ch >> 6) & 63) | 128;
 }
 ++r;
 result[r] = (ch & 63) | 128;
 }
 ++r;
}
return result;
}
function toJSStr(s_33556901) {
var result_33556902 = null;
 var res_33556943 = newSeq_33556919((s_33556901).length);
 var i_33556944 = 0;
 var j_33556945 = 0;
 Label1: {
  Label2: while (true) {
  if (!(i_33556944 < (s_33556901).length)) break Label2;
  var c_33556946 = s_33556901[i_33556944];
  if ((c_33556946 < 128)) {
  res_33556943[j_33556945] = String.fromCharCode(c_33556946);
  i_33556944 += 1;
  }
  else {
   var helper_33556959 = newSeq_33556919(0);
   Label3: {
    Label4: while (true) {
    if (!true) break Label4;
    var code_33556960 = c_33556946.toString(16);
    if ((((code_33556960) == null ? 0 : (code_33556960).length) == 1)) {
    helper_33556959.push("%0");;
    }
    else {
    helper_33556959.push("%");;
    }
    helper_33556959.push(code_33556960);;
    i_33556944 += 1;
    if ((((s_33556901).length <= i_33556944) || (s_33556901[i_33556944] < 128))) {
    break Label3;
    }
    c_33556946 = s_33556901[i_33556944];
    }
   };
++excHandler;
   try {
   res_33556943[j_33556945] = decodeURIComponent(helper_33556959.join(""));
--excHandler;
} catch (EXCEPTION) {
var prevJSError = lastJSError;
lastJSError = EXCEPTION;
--excHandler;
   res_33556943[j_33556945] = helper_33556959.join("");
   lastJSError = prevJSError;
   } finally {
   }
  }
  j_33556945 += 1;
  }
 };
 if (res_33556943.length < j_33556945) { for (var i = res_33556943.length ; i < j_33556945 ; ++i) res_33556943.push(null); }
   else { res_33556943.length = j_33556945; };
 result_33556902 = res_33556943.join("");
return result_33556902;
}
function raiseException(e_33556653, ename_33556654) {
 e_33556653.name = ename_33556654;
 if ((excHandler == 0)) {
 unhandledException(e_33556653);
 }
 e_33556653.trace = nimCopy(null, rawWriteStackTrace_33556604(), NTI33554449);
 throw e_33556653;
}
function addInt(a_33557050, b_33557051) {
  var result = a_33557050 + b_33557051;
 checkOverflowInt(result);
 return result;
}
function chckRange(i_33557324, a_33557325, b_33557326) {
var result_33557327 = 0;
BeforeRet: {
 if (((a_33557325 <= i_33557324) && (i_33557324 <= b_33557326))) {
 result_33557327 = i_33557324;
 break BeforeRet;
 }
 else {
 raiseRangeError();
 }
};
return result_33557327;
}
function chckIndx(i_33557319, a_33557320, b_33557321) {
var result_33557322 = 0;
BeforeRet: {
 if (((a_33557320 <= i_33557319) && (i_33557319 <= b_33557321))) {
 result_33557322 = i_33557319;
 break BeforeRet;
 }
 else {
 raiseIndexError(i_33557319, a_33557320, b_33557321);
 }
};
return result_33557322;
}
function addChar(x_33557415, c_33557416) {
 x_33557415.push(c_33557416);
}
function makeNimstrLit(c_33556895) {
 var result = [];
for (var i = 0; i < c_33556895.length; ++i) {
 result[i] = c_33556895.charCodeAt(i);
}
return result;
}
function eqStrings(a_33557041, b_33557042) {
  if (a_33557041 == b_33557042) return true;
 if (a_33557041 === null && b_33557042.length == 0) return true;
 if (b_33557042 === null && a_33557041.length == 0) return true;
 if ((!a_33557041) || (!b_33557042)) return false;
 var alen = a_33557041.length;
 if (alen != b_33557042.length) return false;
 for (var i = 0; i < alen; ++i)
 if (a_33557041[i] != b_33557042[i]) return false;
 return true;
}
function add_33556373(x_33556374, x_33556374_Idx, y_33556375) {
  if (x_33556374[x_33556374_Idx] === null) { x_33556374[x_33556374_Idx] = []; }
 var off = x_33556374[x_33556374_Idx].length;
 x_33556374[x_33556374_Idx].length += y_33556375.length;
 for (var i = 0; i < y_33556375.length; ++i) {
  x_33556374[x_33556374_Idx][off+i] = y_33556375.charCodeAt(i);
 }
}
function isFatPointer_33557259(ti_33557260) {
var result_33557261 = false;
BeforeRet: {
 result_33557261 = !((ConstSet1[ti_33557260.base.kind] != undefined));
 break BeforeRet;
};
return result_33557261;
}
function nimCopyAux(dest_33557272, src_33557273, n_33557274) {
 switch (n_33557274.kind) {
 case 0:
 break;
 case 1:
   dest_33557272[n_33557274.offset] = nimCopy(dest_33557272[n_33557274.offset], src_33557273[n_33557274.offset], n_33557274.typ);
 break;
 case 2:
  for (var i = 0; i < n_33557274.sons.length; i++) {
 nimCopyAux(dest_33557272, src_33557273, n_33557274.sons[i]);
 }
 break;
 case 3:
   dest_33557272[n_33557274.offset] = nimCopy(dest_33557272[n_33557274.offset], src_33557273[n_33557274.offset], n_33557274.typ);
 for (var i = 0; i < n_33557274.sons.length; ++i) {
  nimCopyAux(dest_33557272, src_33557273, n_33557274.sons[i][1]);
 }
 break;
 }
}
function auxWriteStackTrace_33556508(f_33556509) {
var result_33556510 = [[]];
 var it_33556518 = f_33556509;
 var i_33556519 = 0;
 var total_33556520 = 0;
 var tempFrames_33556521 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555835);
 Label1: {
  Label2: while (true) {
  if (!(!((it_33556518 == null)) && (i_33556519 <= 63))) break Label2;
  tempFrames_33556521[i_33556519].Field0 = it_33556518.procname;
  tempFrames_33556521[i_33556519].Field1 = it_33556518.line;
  tempFrames_33556521[i_33556519].Field2 = it_33556518.filename;
  i_33556519 += 1;
  total_33556520 += 1;
  it_33556518 = it_33556518.prev;
  }
 };
 Label3: {
  Label4: while (true) {
  if (!!((it_33556518 == null))) break Label4;
  total_33556520 += 1;
  it_33556518 = it_33556518.prev;
  }
 };
 result_33556510[0] = nimCopy(null, [], NTI33554449);
 if (!((total_33556520 == i_33556519))) {
 result_33556510[0].push.apply(result_33556510[0], [40]);;
 result_33556510[0].push.apply(result_33556510[0], HEX24_369098760((total_33556520 - i_33556519)));;
 result_33556510[0].push.apply(result_33556510[0], [32,99,97,108,108,115,32,111,109,105,116,116,101,100,41,32,46,46,46,10]);;
 }
 Label5: {
 var j_33556554 = 0;
 var colontmp__520093771 = 0;
 colontmp__520093771 = (i_33556519 - 1);
 var res_520093773 = colontmp__520093771;
 Label6: {
  Label7: while (true) {
  if (!(0 <= res_520093773)) break Label7;
   j_33556554 = res_520093773;
   result_33556510[0].push.apply(result_33556510[0], cstrToNimstr(tempFrames_33556521[j_33556554].Field2));;
   if ((0 < tempFrames_33556521[j_33556554].Field1)) {
   result_33556510[0].push.apply(result_33556510[0], [40]);;
   addInt_301990129(result_33556510, 0, tempFrames_33556521[j_33556554].Field1);
   if (false) {
   result_33556510[0].push.apply(result_33556510[0], [44,32]);;
   addInt_301990129(result_33556510, 0, 0);
   }
   result_33556510[0].push.apply(result_33556510[0], [41]);;
   }
   result_33556510[0].push.apply(result_33556510[0], [32,97,116,32]);;
   add_33556373(result_33556510, 0, tempFrames_33556521[j_33556554].Field0);
   result_33556510[0].push.apply(result_33556510[0], [10]);;
   res_520093773 -= 1;
  }
 };
 };
return result_33556510[0];
}
function rawWriteStackTrace_33556604() {
var result_33556605 = [];
 if (!((framePtr == null))) {
 result_33556605 = nimCopy(null, ([84,114,97,99,101,98,97,99,107,32,40,109,111,115,116,32,114,101,99,101,110,116,32,99,97,108,108,32,108,97,115,116,41,10] || []).concat(auxWriteStackTrace_33556508(framePtr) || []), NTI33554449);
 }
 else {
 result_33556605 = nimCopy(null, [78,111,32,115,116,97,99,107,32,116,114,97,99,101,98,97,99,107,32,97,118,97,105,108,97,98,108,101,10], NTI33554449);
 }
return result_33556605;
}
function newSeq_33556919(len_33556921) {
var result_33556922 = [];
 result_33556922 = new Array(len_33556921); for (var i = 0 ; i < len_33556921 ; ++i) { result_33556922[i] = null; }
return result_33556922;
}
function unhandledException(e_33556649) {
 var buf_33556650 = [[]];
 if (!(((e_33556649.message).length == 0))) {
 buf_33556650[0].push.apply(buf_33556650[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110,58,32]);;
 buf_33556650[0].push.apply(buf_33556650[0], e_33556649.message);;
 }
 else {
 buf_33556650[0].push.apply(buf_33556650[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110]);;
 }
 buf_33556650[0].push.apply(buf_33556650[0], [32,91]);;
 add_33556373(buf_33556650, 0, e_33556649.name);
 buf_33556650[0].push.apply(buf_33556650[0], [93,10]);;
 buf_33556650[0].push.apply(buf_33556650[0], rawWriteStackTrace_33556604());;
 var cbuf_33556651 = toJSStr(buf_33556650[0]);
 framePtr = null;
 if (typeof(Error) !== "undefined") {
 throw new Error(cbuf_33556651);
}
else {
 throw cbuf_33556651;
}
}
function raiseOverflow() {
 raiseException({message: [111,118,101,114,45,32,111,114,32,117,110,100,101,114,102,108,111,119], parent: null, m_type: NTI134217743, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33557048) {
  if (a_33557048 > 2147483647 || a_33557048 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
 raiseException({message: [118,97,108,117,101,32,111,117,116,32,111,102,32,114,97,110,103,101], parent: null, m_type: NTI134217751, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_301990090(result_301990092, result_301990092_Idx, x_301990093, start_301990094, n_301990095) {
 var Temporary1;
 var old_301990096 = (result_301990092[result_301990092_Idx]).length;
 if (result_301990092[result_301990092_Idx].length < (Temporary1 = chckRange(addInt(old_301990096, n_301990095), 0, 2147483647), Temporary1)) { for (var i = result_301990092[result_301990092_Idx].length; i < Temporary1; ++i) result_301990092[result_301990092_Idx].push(0); }
  else {result_301990092[result_301990092_Idx].length = Temporary1; };
 Label2: {
 var iHEX60gensym4_301990110 = 0;
 var i_520093766 = 0;
 Label3: {
  Label4: while (true) {
  if (!(i_520093766 < n_301990095)) break Label4;
   iHEX60gensym4_301990110 = i_520093766;
   result_301990092[result_301990092_Idx][chckIndx(addInt(old_301990096, iHEX60gensym4_301990110), 0, (result_301990092[result_301990092_Idx]).length - 1)] = x_301990093.charCodeAt(chckIndx(addInt(start_301990094, iHEX60gensym4_301990110), 0, (x_301990093).length - 1));
   i_520093766 = addInt(i_520093766, 1);
  }
 };
 };
}
function addChars_301990086(result_301990088, result_301990088_Idx, x_301990089) {
 addChars_301990090(result_301990088, result_301990088_Idx, x_301990089, 0, ((x_301990089) == null ? 0 : (x_301990089).length));
}
function addInt_301990111(result_301990112, result_301990112_Idx, x_301990113) {
 addChars_301990086(result_301990112, result_301990112_Idx, ((x_301990113) + ""));
}
function addInt_301990129(result_301990130, result_301990130_Idx, x_301990131) {
 addInt_301990111(result_301990130, result_301990130_Idx, BigInt(x_301990131));
}
function HEX24_369098760(x_369098761) {
var result_369098762 = [[]];
 addInt_301990129(result_369098762, 0, x_369098761);
return result_369098762[0];
}
function raiseIndexError(i_33556812, a_33556813, b_33556814) {
 var Temporary1;
 if ((b_33556814 < a_33556813)) {
 Temporary1 = [105,110,100,101,120,32,111,117,116,32,111,102,32,98,111,117,110,100,115,44,32,116,104,101,32,99,111,110,116,97,105,110,101,114,32,105,115,32,101,109,112,116,121];
 }
 else {
 Temporary1 = ([105,110,100,101,120,32] || []).concat(HEX24_369098760(i_33556812) || [],[32,110,111,116,32,105,110,32] || [],HEX24_369098760(a_33556813) || [],[32,46,46,32] || [],HEX24_369098760(b_33556814) || []);
 }
 raiseException({message: nimCopy(null, Temporary1, NTI33554449), parent: null, m_type: NTI134217749, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_520093744(s_520093748, value_520093749) {
var result_520093750 = false;
 result_520093750 = ((s_520093748.a <= value_520093749) && (value_520093749 <= s_520093748.b));
return result_520093750;
}
function HEX2EHEX2E_520093699(a_520093702, b_520093703) {
var result_520093706 = ({a: 0, b: 0});
 result_520093706 = nimCopy(result_520093706, {a: a_520093702, b: b_520093703}, NTI520093705);
return result_520093706;
}
function sysFatal_268435501(message_268435504) {
 raiseException({message: nimCopy(null, message_268435504, NTI33554449), m_type: NTI134217745, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_268435499(msg_268435500) {
 sysFatal_268435501(msg_268435500);
}
function failedAssertImpl_268435541(msg_268435542) {
 raiseAssert_268435499(msg_268435542);
}
  var Temporary5;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_520093697 = [[]];
Label1: {
var c_520093698 = [0];
var i_520093759 = 0;
var L_520093760 = 5;
Label2: {
 Label3: while (true) {
 if (!(i_520093759 < L_520093760)) break Label3;
  c_520093698[0] = [49,95,50,95,51][chckIndx(i_520093759, 0, ([49,95,50,95,51]).length - 1)];
  Label4: {
  if (contains_520093744(HEX2EHEX2E_520093699(48, 57), c_520093698[0])) {
  Temporary5 = c_520093698[0];
  }
  else {
   break Label4;
  }
  };
  addChar(s_520093697[0], Temporary5);;
  i_520093759 = addInt(i_520093759, 1);
  if (!((5 == L_520093760))) {
  failedAssertImpl_268435541(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-2.0.4/lib/system/iterators.nim(264, 11) `len(a) == L` the length of the string changed while iterating over it"));
  }
 }
};
};
if (!(eqStrings(s_520093697[0], [49,50,51]))) {
failedAssertImpl_268435541([47,104,111,109,101,47,114,117,110,110,101,114,47,119,111,114,107,47,78,105,109,47,78,105,109,47,116,101,109,112,46,110,105,109,40,51,44,32,49,41,32,96,115,32,61,61,32,34,49,50,51,34,96,32]);
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

Stats

• Started 2024-08-03T19:34:25
• Finished 2024-08-03T19:34:25
• Duration

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

2.0.0 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:535
    throw new Error(cbuf_33556651);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 1) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:535:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:294:5)
    at sysFatal_268435501 (/home/runner/work/Nim/Nim/temp:647:5)
    at raiseAssert_268435499 (/home/runner/work/Nim/Nim/temp:653:5)
    at failedAssertImpl_268435541 (/home/runner/work/Nim/Nim/temp:659:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:694:1)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
    at Module.load (node:internal/modules/cjs/loader:1203:32)
    at Module._load (node:internal/modules/cjs/loader:1019:12)

Node.js v18.20.4
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp'
assertions.nim(34)       raiseAssert
Error: unhandled exception: options.nim(664, 5) `false` errGenerated [AssertionDefect]

IR

Compiled filesize 22.66 Kb (23,206 bytes)

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI134217745 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554448 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI520093705 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI134217749 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217751 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554435 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555835 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555173 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555181 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554449 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554450 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555180 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555177 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555178 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217741 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI134217743 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI134217743 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217743.node = NNI134217743;
var NNI134217741 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217741.node = NNI134217741;
var NNI33555178 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555178.node = NNI33555178;
NTI33555180.base = NTI33555177;
NTI33555181.base = NTI33555177;
var NNI33555177 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555180, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554450, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554449, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554449, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555181, name: "up", sons: null}]};
NTI33555177.node = NNI33555177;
var NNI33555173 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555173.node = NNI33555173;
NTI33555177.base = NTI33555173;
NTI33555178.base = NTI33555177;
NTI134217741.base = NTI33555178;
NTI134217743.base = NTI134217741;
var NNI33555835 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554450, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554435, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554450, name: "Field2", sons: null}]};
NTI33555835.node = NNI33555835;
var NNI134217751 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217751.node = NNI134217751;
NTI134217751.base = NTI33555178;
var NNI134217749 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217749.node = NNI134217749;
NTI134217749.base = NTI33555178;
var NNI520093705 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554448, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554448, name: "b", sons: null}]};
NTI520093705.node = NNI520093705;
var NNI134217745 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI134217745.node = NNI134217745;
NTI134217745.base = NTI33555178;
function mnewString(len_33557003) {
  return new Array(len_33557003);
}
function arrayConstr(len_33557314, value_33557315, typ_33557316) {
  var result = new Array(len_33557314);
 for (var i = 0; i < len_33557314; ++i) result[i] = nimCopy(null, value_33557315, typ_33557316);
 return result;
}
function setConstr() {
  var result = {};
 for (var i = 0; i < arguments.length; ++i) {
 var x = arguments[i];
 if (typeof(x) == "object") {
  for (var j = x[0]; j <= x[1]; ++j) {
  result[j] = true;
  }
 } else {
  result[x] = true;
 }
 }
 return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557268, src_33557269, ti_33557270) {
var result_33557279 = null;
 switch (ti_33557270.kind) {
 case 21:
 case 22:
 case 23:
 case 5:
 if (!(isFatPointer_33557259(ti_33557270))) {
 result_33557279 = src_33557269;
 }
 else {
  result_33557279 = [src_33557269[0], src_33557269[1]];
 }
 break;
 case 19:
   if (dest_33557268 === null || dest_33557268 === undefined) {
  dest_33557268 = {};
 }
 else {
  for (var key in dest_33557268) { delete dest_33557268[key]; }
 }
 for (var key in src_33557269) { dest_33557268[key] = src_33557269[key]; }
 result_33557279 = dest_33557268;
 break;
 case 18:
 case 17:
 if (!((ti_33557270.base == null))) {
 result_33557279 = nimCopy(dest_33557268, src_33557269, ti_33557270.base);
 }
 else {
 if ((ti_33557270.kind == 17)) {
 result_33557279 = (dest_33557268 === null || dest_33557268 === undefined) ? {m_type: ti_33557270} : dest_33557268;
 }
 else {
  result_33557279 = (dest_33557268 === null || dest_33557268 === undefined) ? {} : dest_33557268;
 }
 }
 nimCopyAux(result_33557279, src_33557269, ti_33557270.node);
 break;
 case 4:
 case 16:
   if(ArrayBuffer.isView(src_33557269)) { 
  if(dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
  dest_33557268 = new src_33557269.constructor(src_33557269);
  } else {
  dest_33557268.set(src_33557269, 0);
  }
  result_33557279 = dest_33557268;
 } else {
  if (src_33557269 === null) {
  result_33557279 = null;
  }
  else {
  if (dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
   dest_33557268 = new Array(src_33557269.length);
  }
  result_33557279 = dest_33557268;
  for (var i = 0; i < src_33557269.length; ++i) {
   result_33557279[i] = nimCopy(result_33557279[i], src_33557269[i], ti_33557270.base);
  }
  }
 }
 break;
 case 24:
 case 27:
   if (src_33557269 === null) {
  result_33557279 = null;
 }
 else {
  if (dest_33557268 === null || dest_33557268 === undefined || dest_33557268.length != src_33557269.length) {
  dest_33557268 = new Array(src_33557269.length);
  }
  result_33557279 = dest_33557268;
  for (var i = 0; i < src_33557269.length; ++i) {
  result_33557279[i] = nimCopy(result_33557279[i], src_33557269[i], ti_33557270.base);
  }
 }
 break;
 case 28:
   if (src_33557269 !== null) {
  result_33557279 = src_33557269.slice(0);
 }
 break;
 default: 
 result_33557279 = src_33557269;
 break;
 }
return result_33557279;
}
function cstrToNimstr(c_33556898) {
 var ln = c_33556898.length;
var result = new Array(ln);
var r = 0;
for (var i = 0; i < ln; ++i) {
 var ch = c_33556898.charCodeAt(i);
 if (ch < 128) {
 result[r] = ch;
 }
 else {
 if (ch < 2048) {
  result[r] = (ch >> 6) | 192;
 }
 else {
  if (ch < 55296 || ch >= 57344) {
  result[r] = (ch >> 12) | 224;
  }
  else {
   ++i;
   ch = 65536 + (((ch & 1023) << 10) | (c_33556898.charCodeAt(i) & 1023));
   result[r] = (ch >> 18) | 240;
   ++r;
   result[r] = ((ch >> 12) & 63) | 128;
  }
  ++r;
  result[r] = ((ch >> 6) & 63) | 128;
 }
 ++r;
 result[r] = (ch & 63) | 128;
 }
 ++r;
}
return result;
}
function toJSStr(s_33556901) {
var result_33556902 = null;
 var res_33556943 = newSeq_33556919((s_33556901).length);
 var i_33556944 = 0;
 var j_33556945 = 0;
 Label1: {
  Label2: while (true) {
  if (!(i_33556944 < (s_33556901).length)) break Label2;
  var c_33556946 = s_33556901[i_33556944];
  if ((c_33556946 < 128)) {
  res_33556943[j_33556945] = String.fromCharCode(c_33556946);
  i_33556944 += 1;
  }
  else {
   var helper_33556959 = newSeq_33556919(0);
   Label3: {
    Label4: while (true) {
    if (!true) break Label4;
    var code_33556960 = c_33556946.toString(16);
    if ((((code_33556960) == null ? 0 : (code_33556960).length) == 1)) {
    helper_33556959.push("%0");;
    }
    else {
    helper_33556959.push("%");;
    }
    helper_33556959.push(code_33556960);;
    i_33556944 += 1;
    if ((((s_33556901).length <= i_33556944) || (s_33556901[i_33556944] < 128))) {
    break Label3;
    }
    c_33556946 = s_33556901[i_33556944];
    }
   };
++excHandler;
   try {
   res_33556943[j_33556945] = decodeURIComponent(helper_33556959.join(""));
--excHandler;
} catch (EXCEPTION) {
var prevJSError = lastJSError;
lastJSError = EXCEPTION;
--excHandler;
   res_33556943[j_33556945] = helper_33556959.join("");
   lastJSError = prevJSError;
   } finally {
   }
  }
  j_33556945 += 1;
  }
 };
 if (res_33556943.length < j_33556945) { for (var i = res_33556943.length ; i < j_33556945 ; ++i) res_33556943.push(null); }
   else { res_33556943.length = j_33556945; };
 result_33556902 = res_33556943.join("");
return result_33556902;
}
function raiseException(e_33556653, ename_33556654) {
 e_33556653.name = ename_33556654;
 if ((excHandler == 0)) {
 unhandledException(e_33556653);
 }
 e_33556653.trace = nimCopy(null, rawWriteStackTrace_33556604(), NTI33554449);
 throw e_33556653;
}
function addInt(a_33557050, b_33557051) {
  var result = a_33557050 + b_33557051;
 checkOverflowInt(result);
 return result;
}
function chckRange(i_33557324, a_33557325, b_33557326) {
var result_33557327 = 0;
BeforeRet: {
 if (((a_33557325 <= i_33557324) && (i_33557324 <= b_33557326))) {
 result_33557327 = i_33557324;
 break BeforeRet;
 }
 else {
 raiseRangeError();
 }
};
return result_33557327;
}
function chckIndx(i_33557319, a_33557320, b_33557321) {
var result_33557322 = 0;
BeforeRet: {
 if (((a_33557320 <= i_33557319) && (i_33557319 <= b_33557321))) {
 result_33557322 = i_33557319;
 break BeforeRet;
 }
 else {
 raiseIndexError(i_33557319, a_33557320, b_33557321);
 }
};
return result_33557322;
}
function addChar(x_33557415, c_33557416) {
 x_33557415.push(c_33557416);
}
function makeNimstrLit(c_33556895) {
 var result = [];
for (var i = 0; i < c_33556895.length; ++i) {
 result[i] = c_33556895.charCodeAt(i);
}
return result;
}
function eqStrings(a_33557041, b_33557042) {
  if (a_33557041 == b_33557042) return true;
 if (a_33557041 === null && b_33557042.length == 0) return true;
 if (b_33557042 === null && a_33557041.length == 0) return true;
 if ((!a_33557041) || (!b_33557042)) return false;
 var alen = a_33557041.length;
 if (alen != b_33557042.length) return false;
 for (var i = 0; i < alen; ++i)
 if (a_33557041[i] != b_33557042[i]) return false;
 return true;
}
function add_33556373(x_33556374, x_33556374_Idx, y_33556375) {
  if (x_33556374[x_33556374_Idx] === null) { x_33556374[x_33556374_Idx] = []; }
 var off = x_33556374[x_33556374_Idx].length;
 x_33556374[x_33556374_Idx].length += y_33556375.length;
 for (var i = 0; i < y_33556375.length; ++i) {
  x_33556374[x_33556374_Idx][off+i] = y_33556375.charCodeAt(i);
 }
}
function isFatPointer_33557259(ti_33557260) {
var result_33557261 = false;
BeforeRet: {
 result_33557261 = !((ConstSet1[ti_33557260.base.kind] != undefined));
 break BeforeRet;
};
return result_33557261;
}
function nimCopyAux(dest_33557272, src_33557273, n_33557274) {
 switch (n_33557274.kind) {
 case 0:
 break;
 case 1:
   dest_33557272[n_33557274.offset] = nimCopy(dest_33557272[n_33557274.offset], src_33557273[n_33557274.offset], n_33557274.typ);
 break;
 case 2:
  for (var i = 0; i < n_33557274.sons.length; i++) {
 nimCopyAux(dest_33557272, src_33557273, n_33557274.sons[i]);
 }
 break;
 case 3:
   dest_33557272[n_33557274.offset] = nimCopy(dest_33557272[n_33557274.offset], src_33557273[n_33557274.offset], n_33557274.typ);
 for (var i = 0; i < n_33557274.sons.length; ++i) {
  nimCopyAux(dest_33557272, src_33557273, n_33557274.sons[i][1]);
 }
 break;
 }
}
function auxWriteStackTrace_33556508(f_33556509) {
var result_33556510 = [[]];
 var it_33556518 = f_33556509;
 var i_33556519 = 0;
 var total_33556520 = 0;
 var tempFrames_33556521 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555835);
 Label1: {
  Label2: while (true) {
  if (!(!((it_33556518 == null)) && (i_33556519 <= 63))) break Label2;
  tempFrames_33556521[i_33556519].Field0 = it_33556518.procname;
  tempFrames_33556521[i_33556519].Field1 = it_33556518.line;
  tempFrames_33556521[i_33556519].Field2 = it_33556518.filename;
  i_33556519 += 1;
  total_33556520 += 1;
  it_33556518 = it_33556518.prev;
  }
 };
 Label3: {
  Label4: while (true) {
  if (!!((it_33556518 == null))) break Label4;
  total_33556520 += 1;
  it_33556518 = it_33556518.prev;
  }
 };
 result_33556510[0] = nimCopy(null, [], NTI33554449);
 if (!((total_33556520 == i_33556519))) {
 result_33556510[0].push.apply(result_33556510[0], [40]);;
 result_33556510[0].push.apply(result_33556510[0], HEX24_369098760((total_33556520 - i_33556519)));;
 result_33556510[0].push.apply(result_33556510[0], [32,99,97,108,108,115,32,111,109,105,116,116,101,100,41,32,46,46,46,10]);;
 }
 Label5: {
 var j_33556554 = 0;
 var colontmp__520093771 = 0;
 colontmp__520093771 = (i_33556519 - 1);
 var res_520093773 = colontmp__520093771;
 Label6: {
  Label7: while (true) {
  if (!(0 <= res_520093773)) break Label7;
   j_33556554 = res_520093773;
   result_33556510[0].push.apply(result_33556510[0], cstrToNimstr(tempFrames_33556521[j_33556554].Field2));;
   if ((0 < tempFrames_33556521[j_33556554].Field1)) {
   result_33556510[0].push.apply(result_33556510[0], [40]);;
   addInt_301990129(result_33556510, 0, tempFrames_33556521[j_33556554].Field1);
   if (false) {
   result_33556510[0].push.apply(result_33556510[0], [44,32]);;
   addInt_301990129(result_33556510, 0, 0);
   }
   result_33556510[0].push.apply(result_33556510[0], [41]);;
   }
   result_33556510[0].push.apply(result_33556510[0], [32,97,116,32]);;
   add_33556373(result_33556510, 0, tempFrames_33556521[j_33556554].Field0);
   result_33556510[0].push.apply(result_33556510[0], [10]);;
   res_520093773 -= 1;
  }
 };
 };
return result_33556510[0];
}
function rawWriteStackTrace_33556604() {
var result_33556605 = [];
 if (!((framePtr == null))) {
 result_33556605 = nimCopy(null, ([84,114,97,99,101,98,97,99,107,32,40,109,111,115,116,32,114,101,99,101,110,116,32,99,97,108,108,32,108,97,115,116,41,10] || []).concat(auxWriteStackTrace_33556508(framePtr) || []), NTI33554449);
 }
 else {
 result_33556605 = nimCopy(null, [78,111,32,115,116,97,99,107,32,116,114,97,99,101,98,97,99,107,32,97,118,97,105,108,97,98,108,101,10], NTI33554449);
 }
return result_33556605;
}
function newSeq_33556919(len_33556921) {
var result_33556922 = [];
 result_33556922 = new Array(len_33556921); for (var i = 0 ; i < len_33556921 ; ++i) { result_33556922[i] = null; }
return result_33556922;
}
function unhandledException(e_33556649) {
 var buf_33556650 = [[]];
 if (!(((e_33556649.message).length == 0))) {
 buf_33556650[0].push.apply(buf_33556650[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110,58,32]);;
 buf_33556650[0].push.apply(buf_33556650[0], e_33556649.message);;
 }
 else {
 buf_33556650[0].push.apply(buf_33556650[0], [69,114,114,111,114,58,32,117,110,104,97,110,100,108,101,100,32,101,120,99,101,112,116,105,111,110]);;
 }
 buf_33556650[0].push.apply(buf_33556650[0], [32,91]);;
 add_33556373(buf_33556650, 0, e_33556649.name);
 buf_33556650[0].push.apply(buf_33556650[0], [93,10]);;
 buf_33556650[0].push.apply(buf_33556650[0], rawWriteStackTrace_33556604());;
 var cbuf_33556651 = toJSStr(buf_33556650[0]);
 framePtr = null;
 if (typeof(Error) !== "undefined") {
 throw new Error(cbuf_33556651);
}
else {
 throw cbuf_33556651;
}
}
function raiseOverflow() {
 raiseException({message: [111,118,101,114,45,32,111,114,32,117,110,100,101,114,102,108,111,119], parent: null, m_type: NTI134217743, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33557048) {
  if (a_33557048 > 2147483647 || a_33557048 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
 raiseException({message: [118,97,108,117,101,32,111,117,116,32,111,102,32,114,97,110,103,101], parent: null, m_type: NTI134217751, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_301990090(result_301990092, result_301990092_Idx, x_301990093, start_301990094, n_301990095) {
 var Temporary1;
 var old_301990096 = (result_301990092[result_301990092_Idx]).length;
 if (result_301990092[result_301990092_Idx].length < (Temporary1 = chckRange(addInt(old_301990096, n_301990095), 0, 2147483647), Temporary1)) { for (var i = result_301990092[result_301990092_Idx].length; i < Temporary1; ++i) result_301990092[result_301990092_Idx].push(0); }
  else {result_301990092[result_301990092_Idx].length = Temporary1; };
 Label2: {
 var iHEX60gensym4_301990110 = 0;
 var i_520093766 = 0;
 Label3: {
  Label4: while (true) {
  if (!(i_520093766 < n_301990095)) break Label4;
   iHEX60gensym4_301990110 = i_520093766;
   result_301990092[result_301990092_Idx][chckIndx(addInt(old_301990096, iHEX60gensym4_301990110), 0, (result_301990092[result_301990092_Idx]).length - 1)] = x_301990093.charCodeAt(chckIndx(addInt(start_301990094, iHEX60gensym4_301990110), 0, (x_301990093).length - 1));
   i_520093766 = addInt(i_520093766, 1);
  }
 };
 };
}
function addChars_301990086(result_301990088, result_301990088_Idx, x_301990089) {
 addChars_301990090(result_301990088, result_301990088_Idx, x_301990089, 0, ((x_301990089) == null ? 0 : (x_301990089).length));
}
function addInt_301990111(result_301990112, result_301990112_Idx, x_301990113) {
 addChars_301990086(result_301990112, result_301990112_Idx, ((x_301990113) + ""));
}
function addInt_301990129(result_301990130, result_301990130_Idx, x_301990131) {
 addInt_301990111(result_301990130, result_301990130_Idx, BigInt(x_301990131));
}
function HEX24_369098760(x_369098761) {
var result_369098762 = [[]];
 addInt_301990129(result_369098762, 0, x_369098761);
return result_369098762[0];
}
function raiseIndexError(i_33556812, a_33556813, b_33556814) {
 var Temporary1;
 if ((b_33556814 < a_33556813)) {
 Temporary1 = [105,110,100,101,120,32,111,117,116,32,111,102,32,98,111,117,110,100,115,44,32,116,104,101,32,99,111,110,116,97,105,110,101,114,32,105,115,32,101,109,112,116,121];
 }
 else {
 Temporary1 = ([105,110,100,101,120,32] || []).concat(HEX24_369098760(i_33556812) || [],[32,110,111,116,32,105,110,32] || [],HEX24_369098760(a_33556813) || [],[32,46,46,32] || [],HEX24_369098760(b_33556814) || []);
 }
 raiseException({message: nimCopy(null, Temporary1, NTI33554449), parent: null, m_type: NTI134217749, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_520093744(s_520093748, value_520093749) {
var result_520093750 = false;
 result_520093750 = ((s_520093748.a <= value_520093749) && (value_520093749 <= s_520093748.b));
return result_520093750;
}
function HEX2EHEX2E_520093699(a_520093702, b_520093703) {
var result_520093706 = ({a: 0, b: 0});
 result_520093706 = nimCopy(result_520093706, {a: a_520093702, b: b_520093703}, NTI520093705);
return result_520093706;
}
function sysFatal_268435501(message_268435504) {
 raiseException({message: nimCopy(null, message_268435504, NTI33554449), m_type: NTI134217745, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_268435499(msg_268435500) {
 sysFatal_268435501(msg_268435500);
}
function failedAssertImpl_268435541(msg_268435542) {
 raiseAssert_268435499(msg_268435542);
}
  var Temporary5;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_520093697 = [[]];
Label1: {
var c_520093698 = [0];
var i_520093759 = 0;
var L_520093760 = 5;
Label2: {
 Label3: while (true) {
 if (!(i_520093759 < L_520093760)) break Label3;
  c_520093698[0] = [49,95,50,95,51][chckIndx(i_520093759, 0, ([49,95,50,95,51]).length - 1)];
  Label4: {
  if (contains_520093744(HEX2EHEX2E_520093699(48, 57), c_520093698[0])) {
  Temporary5 = c_520093698[0];
  }
  else {
   break Label4;
  }
  };
  addChar(s_520093697[0], Temporary5);;
  i_520093759 = addInt(i_520093759, 1);
  if (!((5 == L_520093760))) {
  failedAssertImpl_268435541(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-2.0.0/lib/system/iterators.nim(264, 11) `len(a) == L` the length of the string changed while iterating over it"));
  }
 }
};
};
if (!(eqStrings(s_520093697[0], [49,50,51]))) {
failedAssertImpl_268435541([47,104,111,109,101,47,114,117,110,110,101,114,47,119,111,114,107,47,78,105,109,47,78,105,109,47,116,101,109,112,46,110,105,109,40,51,44,32,49,41,32,96,115,32,61,61,32,34,49,50,51,34,96,32]);
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

Stats

• Started 2024-08-03T19:34:28
• Finished 2024-08-03T19:34:29
• Duration

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.6.20 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:520
    throw new Error(cbuf_33556665);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 10) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:520:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:284:5)
    at sysFatal_218103842 (/home/runner/work/Nim/Nim/temp:629:5)
    at raiseAssert_218103840 (/home/runner/work/Nim/Nim/temp:635:5)
    at failedAssertImpl_218103864 (/home/runner/work/Nim/Nim/temp:641:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:676:1)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
    at Module.load (node:internal/modules/cjs/loader:1203:32)
    at Module._load (node:internal/modules/cjs/loader:1019:12)

Node.js v18.20.4
Error: execution of an external program failed: '/usr/local/bin/node --unhandled-rejections=strict /home/runner/work/Nim/Nim/temp '
fatal.nim(54)            sysFatal
Error: unhandled exception: options.nim(662, 14) `false` errGenerated [AssertionDefect]

IR

Compiled filesize 21.89 Kb (22,419 bytes)

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI33555127 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554438 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI452984841 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555131 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555133 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33554456 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI33555922 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI33555086 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555168 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33554439 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI33554440 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI33555167 = {size: 0, kind: 22, base: null, node: null, finalizer: null};
var NTI33555115 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555116 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555123 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI33555125 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NNI33555125 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555125.node = NNI33555125;
var NNI33555123 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555123.node = NNI33555123;
var NNI33555116 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555116.node = NNI33555116;
NTI33555167.base = NTI33555115;
NTI33555168.base = NTI33555115;
var NNI33555115 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI33555167, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI33554440, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI33554439, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI33554439, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI33555168, name: "up", sons: null}]};
NTI33555115.node = NNI33555115;
var NNI33555086 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555086.node = NNI33555086;
NTI33555115.base = NTI33555086;
NTI33555116.base = NTI33555115;
NTI33555123.base = NTI33555116;
NTI33555125.base = NTI33555123;
var NNI33555922 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI33554440, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI33554456, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI33554440, name: "Field2", sons: null}]};
NTI33555922.node = NNI33555922;
var NNI33555133 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555133.node = NNI33555133;
NTI33555133.base = NTI33555116;
var NNI33555131 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555131.node = NNI33555131;
NTI33555131.base = NTI33555116;
var NNI452984841 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI33554438, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI33554438, name: "b", sons: null}]};
NTI452984841.node = NNI452984841;
var NNI33555127 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI33555127.node = NNI33555127;
NTI33555127.base = NTI33555116;
function makeNimstrLit(c_33556801) {
 var result = [];
for (var i = 0; i < c_33556801.length; ++i) {
 result[i] = c_33556801.charCodeAt(i);
}
return result;
}
function mnewString(len_33556893) {
  return new Array(len_33556893);
}
function arrayConstr(len_33557179, value_33557180, typ_33557181) {
  var result = new Array(len_33557179);
 for (var i = 0; i < len_33557179; ++i) result[i] = nimCopy(null, value_33557180, typ_33557181);
 return result;
}
function setConstr() {
  var result = {};
 for (var i = 0; i < arguments.length; ++i) {
 var x = arguments[i];
 if (typeof(x) == "object") {
  for (var j = x[0]; j <= x[1]; ++j) {
  result[j] = true;
  }
 } else {
  result[x] = true;
 }
 }
 return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33557140, src_33557141, ti_33557142) {
var result_33557151 = null;
 switch (ti_33557142.kind) {
 case 21:
 case 22:
 case 23:
 case 5:
 if (!(isFatPointer_33557131(ti_33557142))) {
 result_33557151 = src_33557141;
 }
 else {
  result_33557151 = [src_33557141[0], src_33557141[1]];
 }
 break;
 case 19:
   if (dest_33557140 === null || dest_33557140 === undefined) {
  dest_33557140 = {};
 }
 else {
  for (var key in dest_33557140) { delete dest_33557140[key]; }
 }
 for (var key in src_33557141) { dest_33557140[key] = src_33557141[key]; }
 result_33557151 = dest_33557140;
 break;
 case 18:
 case 17:
 if (!((ti_33557142.base == null))) {
 result_33557151 = nimCopy(dest_33557140, src_33557141, ti_33557142.base);
 }
 else {
 if ((ti_33557142.kind == 17)) {
 result_33557151 = (dest_33557140 === null || dest_33557140 === undefined) ? {m_type: ti_33557142} : dest_33557140;
 }
 else {
  result_33557151 = (dest_33557140 === null || dest_33557140 === undefined) ? {} : dest_33557140;
 }
 }
 nimCopyAux(result_33557151, src_33557141, ti_33557142.node);
 break;
 case 24:
 case 4:
 case 27:
 case 16:
   if (src_33557141 === null) {
  result_33557151 = null;
 }
 else {
  if (dest_33557140 === null || dest_33557140 === undefined || dest_33557140.length != src_33557141.length) {
  dest_33557140 = new Array(src_33557141.length);
  }
  result_33557151 = dest_33557140;
  for (var i = 0; i < src_33557141.length; ++i) {
  result_33557151[i] = nimCopy(result_33557151[i], src_33557141[i], ti_33557142.base);
  }
 }
 break;
 case 28:
   if (src_33557141 !== null) {
  result_33557151 = src_33557141.slice(0);
 }
 break;
 default: 
 result_33557151 = src_33557141;
 break;
 }
return result_33557151;
}
function cstrToNimstr(c_33556804) {
 var ln = c_33556804.length;
var result = new Array(ln);
var r = 0;
for (var i = 0; i < ln; ++i) {
 var ch = c_33556804.charCodeAt(i);
 if (ch < 128) {
 result[r] = ch;
 }
 else {
 if (ch < 2048) {
  result[r] = (ch >> 6) | 192;
 }
 else {
  if (ch < 55296 || ch >= 57344) {
  result[r] = (ch >> 12) | 224;
  }
  else {
   ++i;
   ch = 65536 + (((ch & 1023) << 10) | (c_33556804.charCodeAt(i) & 1023));
   result[r] = (ch >> 18) | 240;
   ++r;
   result[r] = ((ch >> 12) & 63) | 128;
  }
  ++r;
  result[r] = ((ch >> 6) & 63) | 128;
 }
 ++r;
 result[r] = (ch & 63) | 128;
 }
 ++r;
}
return result;
}
function toJSStr(s_33556807) {
     var Temporary5;
var result_33556808 = null;
 var res_33556842 = newSeq_33556825((s_33556807).length);
 var i_33556843 = 0;
 var j_33556844 = 0;
 Label1: do {
  Label2: while (true) {
  if (!(i_33556843 < (s_33556807).length)) break Label2;
  var c_33556845 = s_33556807[i_33556843];
  if ((c_33556845 < 128)) {
  res_33556842[j_33556844] = String.fromCharCode(c_33556845);
  i_33556843 += 1;
  }
  else {
   var helper_33556857 = newSeq_33556825(0);
   Label3: do {
    Label4: while (true) {
    if (!true) break Label4;
    var code_33556858 = c_33556845.toString(16);
    if ((((code_33556858) == null ? 0 : (code_33556858).length) == 1)) {
    helper_33556857.push("%0");;
    }
    else {
    helper_33556857.push("%");;
    }
    helper_33556857.push(code_33556858);;
    i_33556843 += 1;
     if (((s_33556807).length <= i_33556843)) Temporary5 = true; else {                      Temporary5 = (s_33556807[i_33556843] < 128);                    }                  if (Temporary5) {
    break Label3;
    }
    c_33556845 = s_33556807[i_33556843];
    }
   } while (false);
++excHandler;
   try {
   res_33556842[j_33556844] = decodeURIComponent(helper_33556857.join(""));
--excHandler;
} catch (EXCEPTION) {
var prevJSError = lastJSError;
lastJSError = EXCEPTION;
--excHandler;
   res_33556842[j_33556844] = helper_33556857.join("");
   lastJSError = prevJSError;
   } finally {
   }
  }
  j_33556844 += 1;
  }
 } while (false);
 if (res_33556842.length < j_33556844) { for (var i = res_33556842.length ; i < j_33556844 ; ++i) res_33556842.push(null); }
   else { res_33556842.length = j_33556844; };
 result_33556808 = res_33556842.join("");
return result_33556808;
}
function raiseException(e_33556667, ename_33556668) {
 e_33556667.name = ename_33556668;
 if ((excHandler == 0)) {
 unhandledException(e_33556667);
 }
 e_33556667.trace = nimCopy(null, rawWriteStackTrace_33556631(), NTI33554439);
 throw e_33556667;
}
function addInt(a_33556940, b_33556941) {
  var result = a_33556940 + b_33556941;
 checkOverflowInt(result);
 return result;
}
function chckRange(i_33557189, a_33557190, b_33557191) {
 var Temporary1;
var result_33557192 = 0;
BeforeRet: do {
 if (!(a_33557190 <= i_33557189)) Temporary1 = false; else {        Temporary1 = (i_33557189 <= b_33557191);      }    if (Temporary1) {
 result_33557192 = i_33557189;
 break BeforeRet;
 }
 else {
 raiseRangeError();
 }
} while (false);
return result_33557192;
}
function chckIndx(i_33557184, a_33557185, b_33557186) {
 var Temporary1;
var result_33557187 = 0;
BeforeRet: do {
 if (!(a_33557185 <= i_33557184)) Temporary1 = false; else {        Temporary1 = (i_33557184 <= b_33557186);      }    if (Temporary1) {
 result_33557187 = i_33557184;
 break BeforeRet;
 }
 else {
 raiseIndexError(i_33557184, a_33557185, b_33557186);
 }
} while (false);
return result_33557187;
}
function addChar(x_33557255, c_33557256) {
 x_33557255.push(c_33557256);
}
function eqStrings(a_33556931, b_33556932) {
  if (a_33556931 == b_33556932) return true;
 if (a_33556931 === null && b_33556932.length == 0) return true;
 if (b_33556932 === null && a_33556931.length == 0) return true;
 if ((!a_33556931) || (!b_33556932)) return false;
 var alen = a_33556931.length;
 if (alen != b_33556932.length) return false;
 for (var i = 0; i < alen; ++i)
 if (a_33556931[i] != b_33556932[i]) return false;
 return true;
}
function add_33556419(x_33556420, x_33556420_Idx, y_33556421) {
  if (x_33556420[x_33556420_Idx] === null) { x_33556420[x_33556420_Idx] = []; }
 var off = x_33556420[x_33556420_Idx].length;
 x_33556420[x_33556420_Idx].length += y_33556421.length;
 for (var i = 0; i < y_33556421.length; ++i) {
  x_33556420[x_33556420_Idx][off+i] = y_33556421.charCodeAt(i);
 }
}
function isFatPointer_33557131(ti_33557132) {
var result_33557133 = false;
BeforeRet: do {
 result_33557133 = !((ConstSet1[ti_33557132.base.kind] != undefined));
 break BeforeRet;
} while (false);
return result_33557133;
}
function nimCopyAux(dest_33557144, src_33557145, n_33557146) {
 switch (n_33557146.kind) {
 case 0:
 break;
 case 1:
   dest_33557144[n_33557146.offset] = nimCopy(dest_33557144[n_33557146.offset], src_33557145[n_33557146.offset], n_33557146.typ);
 break;
 case 2:
  for (var i = 0; i < n_33557146.sons.length; i++) {
 nimCopyAux(dest_33557144, src_33557145, n_33557146.sons[i]);
 }
 break;
 case 3:
   dest_33557144[n_33557146.offset] = nimCopy(dest_33557144[n_33557146.offset], src_33557145[n_33557146.offset], n_33557146.typ);
 for (var i = 0; i < n_33557146.sons.length; ++i) {
  nimCopyAux(dest_33557144, src_33557145, n_33557146.sons[i][1]);
 }
 break;
 }
}
function auxWriteStackTrace_33556559(f_33556560) {
  var Temporary3;
var result_33556561 = [[]];
 var it_33556569 = f_33556560;
 var i_33556570 = 0;
 var total_33556571 = 0;
 var tempFrames_33556572 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI33555922);
 Label1: do {
  Label2: while (true) {
  if (!!((it_33556569 == null))) Temporary3 = false; else {            Temporary3 = (i_33556570 <= 63);          }        if (!Temporary3) break Label2;
  tempFrames_33556572[i_33556570].Field0 = it_33556569.procname;
  tempFrames_33556572[i_33556570].Field1 = it_33556569.line;
  tempFrames_33556572[i_33556570].Field2 = it_33556569.filename;
  i_33556570 += 1;
  total_33556571 += 1;
  it_33556569 = it_33556569.prev;
  }
 } while (false);
 Label4: do {
  Label5: while (true) {
  if (!!((it_33556569 == null))) break Label5;
  total_33556571 += 1;
  it_33556569 = it_33556569.prev;
  }
 } while (false);
 result_33556561[0] = nimCopy(null, [], NTI33554439);
 if (!((total_33556571 == i_33556570))) {
 result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("("));;
 result_33556561[0].push.apply(result_33556561[0], HEX24_335544323((total_33556571 - i_33556570)));;
 result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(" calls omitted) ...\x0A"));;
 }
 Label6: do {
 var j_33556602 = 0;
 var colontmp__452984892 = 0;
 colontmp__452984892 = (i_33556570 - 1);
 var res_452984894 = colontmp__452984892;
 Label7: do {
  Label8: while (true) {
  if (!(0 <= res_452984894)) break Label8;
   j_33556602 = res_452984894;
   result_33556561[0].push.apply(result_33556561[0], cstrToNimstr(tempFrames_33556572[j_33556602].Field2));;
   if ((0 < tempFrames_33556572[j_33556602].Field1)) {
   result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("("));;
   addInt_251658457(result_33556561, 0, tempFrames_33556572[j_33556602].Field1);
   if (false) {
   result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(", "));;
   addInt_251658457(result_33556561, 0, 0);
   }
   result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(")"));;
   }
   result_33556561[0].push.apply(result_33556561[0], makeNimstrLit(" at "));;
   add_33556419(result_33556561, 0, tempFrames_33556572[j_33556602].Field0);
   result_33556561[0].push.apply(result_33556561[0], makeNimstrLit("\x0A"));;
   res_452984894 -= 1;
  }
 } while (false);
 } while (false);
return result_33556561[0];
}
function rawWriteStackTrace_33556631() {
var result_33556632 = [];
 if (!((framePtr == null))) {
 result_33556632 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(auxWriteStackTrace_33556559(framePtr) || []), NTI33554439);
 }
 else {
 result_33556632 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI33554439);
 }
return result_33556632;
}
function newSeq_33556825(len_33556827) {
var result_33556828 = [];
 result_33556828 = new Array(len_33556827); for (var i = 0 ; i < len_33556827 ; ++i) { result_33556828[i] = null; }
return result_33556828;
}
function unhandledException(e_33556663) {
 var buf_33556664 = [[]];
 if (!(((e_33556663.message).length == 0))) {
 buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("Error: unhandled exception: "));;
 buf_33556664[0].push.apply(buf_33556664[0], e_33556663.message);;
 }
 else {
 buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("Error: unhandled exception"));;
 }
 buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit(" ["));;
 add_33556419(buf_33556664, 0, e_33556663.name);
 buf_33556664[0].push.apply(buf_33556664[0], makeNimstrLit("]\x0A"));;
 buf_33556664[0].push.apply(buf_33556664[0], rawWriteStackTrace_33556631());;
 var cbuf_33556665 = toJSStr(buf_33556664[0]);
 framePtr = null;
 if (typeof(Error) !== "undefined") {
 throw new Error(cbuf_33556665);
}
else {
 throw cbuf_33556665;
}
}
function raiseOverflow() {
 raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI33555125, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_33556938) {
  if (a_33556938 > 2147483647 || a_33556938 < -2147483648) raiseOverflow();
}
function raiseRangeError() {
 raiseException({message: makeNimstrLit("value out of range"), parent: null, m_type: NTI33555133, name: null, trace: [], up: null}, "RangeDefect");
}
function addChars_251658415(result_251658417, result_251658417_Idx, x_251658418, start_251658419, n_251658420) {
 var old_251658421 = (result_251658417[result_251658417_Idx]).length;
 (result_251658417[result_251658417_Idx].length = chckRange(addInt(old_251658421, n_251658420), 0, 2147483647));
 Label1: do {
 var iHEX60gensym4_251658435 = 0;
 var i_452984887 = 0;
 Label2: do {
  Label3: while (true) {
  if (!(i_452984887 < n_251658420)) break Label3;
   iHEX60gensym4_251658435 = i_452984887;
   result_251658417[result_251658417_Idx][chckIndx(addInt(old_251658421, iHEX60gensym4_251658435), 0, (result_251658417[result_251658417_Idx]).length - 1)] = x_251658418.charCodeAt(chckIndx(addInt(start_251658419, iHEX60gensym4_251658435), 0, (x_251658418).length - 1));
   i_452984887 = addInt(i_452984887, 1);
  }
 } while (false);
 } while (false);
}
function addChars_251658411(result_251658413, result_251658413_Idx, x_251658414) {
 addChars_251658415(result_251658413, result_251658413_Idx, x_251658414, 0, ((x_251658414) == null ? 0 : (x_251658414).length));
}
function addInt_251658436(result_251658437, result_251658437_Idx, x_251658438) {
 addChars_251658411(result_251658437, result_251658437_Idx, ((x_251658438) + ""));
}
function addInt_251658457(result_251658458, result_251658458_Idx, x_251658459) {
 addInt_251658436(result_251658458, result_251658458_Idx, x_251658459);
}
function HEX24_335544323(x_335544324) {
var result_335544325 = [[]];
 addInt_251658457(result_335544325, 0, x_335544324);
return result_335544325[0];
}
function raiseIndexError(i_33556754, a_33556755, b_33556756) {
 var Temporary1;
 if ((b_33556756 < a_33556755)) {
 Temporary1 = makeNimstrLit("index out of bounds, the container is empty");
 }
 else {
 Temporary1 = (makeNimstrLit("index ") || []).concat(HEX24_335544323(i_33556754) || [],makeNimstrLit(" not in ") || [],HEX24_335544323(a_33556755) || [],makeNimstrLit(" .. ") || [],HEX24_335544323(b_33556756) || []);
 }
 raiseException({message: nimCopy(null, Temporary1, NTI33554439), parent: null, m_type: NTI33555131, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_452984865(s_452984869, value_452984870) {
var result_452984871 = false;
 result_452984871 = ((s_452984869.a <= value_452984870) && (value_452984870 <= s_452984869.b));
return result_452984871;
}
function HEX2EHEX2E_452984835(a_452984838, b_452984839) {
var result_452984842 = ({a: 0, b: 0});
 result_452984842 = nimCopy(result_452984842, {a: a_452984838, b: b_452984839}, NTI452984841);
return result_452984842;
}
function sysFatal_218103842(message_218103845) {
 raiseException({message: nimCopy(null, message_218103845, NTI33554439), m_type: NTI33555127, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_218103840(msg_218103841) {
 sysFatal_218103842(msg_218103841);
}
function failedAssertImpl_218103864(msg_218103865) {
 raiseAssert_218103840(msg_218103865);
}
  var Temporary5;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
var s_452984833 = [[]];
Label1: do {
var c_452984834 = [0];
var i_452984880 = 0;
var L_452984881 = 5;
Label2: do {
 Label3: while (true) {
 if (!(i_452984880 < L_452984881)) break Label3;
  c_452984834[0] = makeNimstrLit("1_2_3")[chckIndx(i_452984880, 0, (makeNimstrLit("1_2_3")).length - 1)];
  Label4: do {
  if (contains_452984865(HEX2EHEX2E_452984835(48, 57), c_452984834[0])) {
  Temporary5 = c_452984834[0];
  }
  else {
   break Label4;
  }
  } while (false);
  addChar(s_452984833[0], Temporary5);;
  i_452984880 = addInt(i_452984880, 1);
  if (!((5 == L_452984881))) {
  failedAssertImpl_218103864(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.6.20/lib/system/iterators.nim(258, 11) `len(a) == L` the length of the string changed while iterating over it"));
  }
 }
} while (false);
} while (false);
if (!(eqStrings(s_452984833[0], makeNimstrLit("123")))) {
failedAssertImpl_218103864(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;
var F = {procname: "module temp", prev: framePtr, filename: "/home/runner/work/Nim/Nim/temp.nim", line: 0};
framePtr = F;
framePtr = F.prev;

Stats

• Started 2024-08-03T19:34:31
• Finished 2024-08-03T19:34:31
• Duration

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.4.8 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:479
    throw new Error(cbuf_1420201);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 10) `s == "123"`  [AssertionDefect]
Traceback (most recent call last)
/home/runner/work/Nim/Nim/temp.nim at module temp

    at unhandledException (/home/runner/work/Nim/Nim/temp:479:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:274:5)
    at sysFatal_1305418 (/home/runner/work/Nim/Nim/temp:530:5)
    at raiseAssert_1305414 (/home/runner/work/Nim/Nim/temp:535:5)
    at failedAssertImpl_1305480 (/home/runner/work/Nim/Nim/temp:540:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:575:1)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
    at Module.load (node:internal/modules/cjs/loader:1203:32)
    at Module._load (node:internal/modules/cjs/loader:1019:12)

Node.js v18.20.4
Error: execution of an external program failed: '/usr/local/bin/node /home/runner/work/Nim/Nim/temp '

IR

Compiled filesize 18.76 Kb (19,213 bytes)

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
var NTI1194641 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194633 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194637 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1188011 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI1855011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI1188044 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI1380043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI1194408 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194728 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI1188015 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI1194723 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI1194617 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194619 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1194649 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI1188013 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NNI1194649 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194649.node = NNI1194649;
var NNI1194619 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194619.node = NNI1194619;
NTI1194723.base = NTI1194617;
NTI1194728.base = NTI1194617;
var NNI1194617 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI1194723, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI1188015, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI1188013, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI1188013, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI1194728, name: "up", sons: null}]};
NTI1194617.node = NNI1194617;
var NNI1194408 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194408.node = NNI1194408;
NTI1194617.base = NTI1194408;
NTI1194619.base = NTI1194617;
NTI1194649.base = NTI1194619;
var NNI1380043 = {kind: 2, len: 3, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI1188015, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI1188044, name: "Field1", sons: null}, 
{kind: 1, offset: "Field2", len: 0, typ: NTI1188015, name: "Field2", sons: null}]};
NTI1380043.node = NNI1380043;
var NNI1855011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI1188011, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI1188011, name: "b", sons: null}]};
NTI1855011.node = NNI1855011;
var NNI1194637 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194637.node = NNI1194637;
var NNI1194633 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194633.node = NNI1194633;
NTI1194633.base = NTI1194619;
NTI1194637.base = NTI1194633;
var NNI1194641 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI1194641.node = NNI1194641;
NTI1194641.base = NTI1194619;
function makeNimstrLit(c_1455062) {
 var ln = c_1455062.length;
var result = new Array(ln);
for (var i = 0; i < ln; ++i) {
 result[i] = c_1455062.charCodeAt(i);
}
return result;
}
function cstrToNimstr(c_1455079) {
 var ln = c_1455079.length;
var result = new Array(ln);
var r = 0;
for (var i = 0; i < ln; ++i) {
 var ch = c_1455079.charCodeAt(i);
 if (ch < 128) {
 result[r] = ch;
 }
 else {
 if (ch < 2048) {
  result[r] = (ch >> 6) | 192;
 }
 else {
  if (ch < 55296 || ch >= 57344) {
  result[r] = (ch >> 12) | 224;
  }
  else {
   ++i;
   ch = 65536 + (((ch & 1023) << 10) | (c_1455079.charCodeAt(i) & 1023));
   result[r] = (ch >> 18) | 240;
   ++r;
   result[r] = ((ch >> 12) & 63) | 128;
  }
  ++r;
  result[r] = ((ch >> 6) & 63) | 128;
 }
 ++r;
 result[r] = (ch & 63) | 128;
 }
 ++r;
}
return result;
}
function setConstr() {
  var result = {};
 for (var i = 0; i < arguments.length; ++i) {
 var x = arguments[i];
 if (typeof(x) == "object") {
  for (var j = x[0]; j <= x[1]; ++j) {
  result[j] = true;
  }
 } else {
  result[x] = true;
 }
 }
 return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_1470023, src_1470024, ti_1470025) {
var result_1475219 = null;
 switch (ti_1470025.kind) {
 case 21:
 case 22:
 case 23:
 case 5:
 if (!(isFatPointer_1465401(ti_1470025))) {
 result_1475219 = src_1470024;
 }
 else {
  result_1475219 = [src_1470024[0], src_1470024[1]];
 }
 break;
 case 19:
   if (dest_1470023 === null || dest_1470023 === undefined) {
  dest_1470023 = {};
 }
 else {
  for (var key in dest_1470023) { delete dest_1470023[key]; }
 }
 for (var key in src_1470024) { dest_1470023[key] = src_1470024[key]; }
 result_1475219 = dest_1470023;
 break;
 case 18:
 case 17:
 if (!((ti_1470025.base == null))) {
 result_1475219 = nimCopy(dest_1470023, src_1470024, ti_1470025.base);
 }
 else {
 if ((ti_1470025.kind == 17)) {
 result_1475219 = (dest_1470023 === null || dest_1470023 === undefined) ? {m_type: ti_1470025} : dest_1470023;
 }
 else {
  result_1475219 = (dest_1470023 === null || dest_1470023 === undefined) ? {} : dest_1470023;
 }
 }
 nimCopyAux(result_1475219, src_1470024, ti_1470025.node);
 break;
 case 24:
 case 4:
 case 27:
 case 16:
   if (src_1470024 === null) {
  result_1475219 = null;
 }
 else {
  if (dest_1470023 === null || dest_1470023 === undefined) {
  dest_1470023 = new Array(src_1470024.length);
  }
  else {
  dest_1470023.length = src_1470024.length;
  }
  result_1475219 = dest_1470023;
  for (var i = 0; i < src_1470024.length; ++i) {
  result_1475219[i] = nimCopy(result_1475219[i], src_1470024[i], ti_1470025.base);
  }
 }
 break;
 case 28:
   if (src_1470024 !== null) {
  result_1475219 = src_1470024.slice(0);
 }
 break;
 default: 
 result_1475219 = src_1470024;
 break;
 }
return result_1475219;
}
function arrayConstr(len_1480067, value_1480068, typ_1480069) {
  var result = new Array(len_1480067);
 for (var i = 0; i < len_1480067; ++i) result[i] = nimCopy(null, value_1480068, typ_1480069);
 return result;
}
function toJSStr(s_1455096) {
     var Tmp5;
   var Tmp7;
var result_1455097 = null;
 var res_1455170 = newSeq_1455128((s_1455096).length);
 var i_1455172 = 0;
 var j_1455174 = 0;
 L1: do {
  L2: while (true) {
  if (!(i_1455172 < (s_1455096).length)) break L2;
  var c_1455175 = s_1455096[i_1455172];
  if ((c_1455175 < 128)) {
  res_1455170[j_1455174] = String.fromCharCode(c_1455175);
  i_1455172 += 1;
  }
  else {
   var helper_1455198 = newSeq_1455128(0);
   L3: do {
    L4: while (true) {
    if (!true) break L4;
    var code_1455199 = c_1455175.toString(16);
    if ((((code_1455199) == null ? 0 : (code_1455199).length) == 1)) {
    helper_1455198.push("%0");;
    }
    else {
    helper_1455198.push("%");;
    }
    helper_1455198.push(code_1455199);;
    i_1455172 += 1;
     if (((s_1455096).length <= i_1455172)) Tmp5 = true; else {                      Tmp5 = (s_1455096[i_1455172] < 128);                    }                  if (Tmp5) {
    break L3;
    }
    c_1455175 = s_1455096[i_1455172];
    }
   } while(false);
++excHandler;
   Tmp7 = framePtr;
   try {
   res_1455170[j_1455174] = decodeURIComponent(helper_1455198.join(""));
--excHandler;
} catch (EXC) {
var prevJSError = lastJSError;
lastJSError = EXC;
--excHandler;
   framePtr = Tmp7;
   res_1455170[j_1455174] = helper_1455198.join("");
   lastJSError = prevJSError;
   } finally {
   framePtr = Tmp7;
   }
  }
  j_1455174 += 1;
  }
 } while(false);
 if (res_1455170.length < j_1455174) { for (var i=res_1455170.length;i<j_1455174;++i) res_1455170.push(null); }
   else { res_1455170.length = j_1455174; };
 result_1455097 = res_1455170.join("");
return result_1455097;
}
function raiseException(e_1420218, ename_1420219) {
 e_1420218.name = ename_1420219;
 if ((excHandler == 0)) {
 unhandledException(e_1420218);
 }
 e_1420218.trace = nimCopy(null, rawWriteStackTrace_1410260(), NTI1188013);
 throw e_1420218;
}
function chckIndx(i_1480086, a_1480087, b_1480088) {
 var Tmp1;
var result_1480089 = 0;
BeforeRet: do {
 if (!(a_1480087 <= i_1480086)) Tmp1 = false; else {        Tmp1 = (i_1480086 <= b_1480088);      }    if (Tmp1) {
 result_1480089 = i_1480086;
 break BeforeRet;
 }
 else {
 raiseIndexError(i_1480086, a_1480087, b_1480088);
 }
} while (false);
return result_1480089;
}
function addChar(x_1505031, c_1505032) {
 x_1505031.push(c_1505032);
}
function addInt(a_1460419, b_1460420) {
  var result = a_1460419 + b_1460420;
 checkOverflowInt(result);
 return result;
}
function eqStrings(a_1460222, b_1460223) {
  if (a_1460222 == b_1460223) return true;
 if (a_1460222 === null && b_1460223.length == 0) return true;
 if (b_1460223 === null && a_1460222.length == 0) return true;
 if ((!a_1460222) || (!b_1460223)) return false;
 var alen = a_1460222.length;
 if (alen != b_1460223.length) return false;
 for (var i = 0; i < alen; ++i)
 if (a_1460222[i] != b_1460223[i]) return false;
 return true;
}
function isFatPointer_1465401(ti_1465403) {
var result_1465404 = false;
BeforeRet: do {
 result_1465404 = !((ConstSet1[ti_1465403.base.kind] != undefined));
 break BeforeRet;
} while (false);
return result_1465404;
}
function nimCopyAux(dest_1470028, src_1470029, n_1470031) {
 switch (n_1470031.kind) {
 case 0:
 break;
 case 1:
   dest_1470028[n_1470031.offset] = nimCopy(dest_1470028[n_1470031.offset], src_1470029[n_1470031.offset], n_1470031.typ);
 break;
 case 2:
  for (var i = 0; i < n_1470031.sons.length; i++) {
 nimCopyAux(dest_1470028, src_1470029, n_1470031.sons[i]);
 }
 break;
 case 3:
   dest_1470028[n_1470031.offset] = nimCopy(dest_1470028[n_1470031.offset], src_1470029[n_1470031.offset], n_1470031.typ);
 for (var i = 0; i < n_1470031.sons.length; ++i) {
  nimCopyAux(dest_1470028, src_1470029, n_1470031.sons[i][1]);
 }
 break;
 }
}
function add_1357211(x_1357214, x_1357214_Idx, y_1357215) {
  if (x_1357214[x_1357214_Idx] === null) { x_1357214[x_1357214_Idx] = []; }
 var off = x_1357214[x_1357214_Idx].length;
 x_1357214[x_1357214_Idx].length += y_1357215.length;
 for (var i = 0; i < y_1357215.length; ++i) {
  x_1357214[x_1357214_Idx][off+i] = y_1357215.charCodeAt(i);
 }
}
function auxWriteStackTrace_1380038(f_1380040) {
  var Tmp3;
var result_1380041 = [[]];
 var it_1380051 = f_1380040;
 var i_1380053 = 0;
 var total_1380055 = 0;
 var tempFrames_1380062 = arrayConstr(64, {Field0: null, Field1: 0, Field2: null}, NTI1380043);
 L1: do {
  L2: while (true) {
  if (!!((it_1380051 == null))) Tmp3 = false; else {            Tmp3 = (i_1380053 <= 63);          }        if (!Tmp3) break L2;
  tempFrames_1380062[i_1380053].Field0 = it_1380051.procname;
  tempFrames_1380062[i_1380053].Field1 = it_1380051.line;
  tempFrames_1380062[i_1380053].Field2 = it_1380051.filename;
  i_1380053 += 1;
  total_1380055 += 1;
  it_1380051 = it_1380051.prev;
  }
 } while(false);
 L4: do {
  L5: while (true) {
  if (!!((it_1380051 == null))) break L5;
  total_1380055 += 1;
  it_1380051 = it_1380051.prev;
  }
 } while(false);
 result_1380041[0] = nimCopy(null, [], NTI1188013);
 if (!((total_1380055 == i_1380053))) {
 result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("("));;
 result_1380041[0].push.apply(result_1380041[0], cstrToNimstr(((total_1380055 - i_1380053))+""));;
 result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(" calls omitted) ...\x0A"));;
 }
 L6: do {
 var j_1395236 = 0;
 var colontmp__1865232 = 0;
 colontmp__1865232 = (i_1380053 - 1);
 var res_1865237 = colontmp__1865232;
 L7: do {
  L8: while (true) {
  if (!(0 <= res_1865237)) break L8;
   j_1395236 = res_1865237;
   result_1380041[0].push.apply(result_1380041[0], cstrToNimstr(tempFrames_1380062[j_1395236].Field2));;
   if ((0 < tempFrames_1380062[j_1395236].Field1)) {
   result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("("));;
   result_1380041[0].push.apply(result_1380041[0], cstrToNimstr((tempFrames_1380062[j_1395236].Field1)+""));;
   if (false) {
   result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(", "));;
   result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("0"));;
   }
   result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(")"));;
   }
   result_1380041[0].push.apply(result_1380041[0], makeNimstrLit(" at "));;
   add_1357211(result_1380041, 0, tempFrames_1380062[j_1395236].Field0);
   result_1380041[0].push.apply(result_1380041[0], makeNimstrLit("\x0A"));;
   res_1865237 -= 1;
  }
 } while(false);
 } while(false);
return result_1380041[0];
}
function rawWriteStackTrace_1410260() {
var result_1410262 = [];
 if (!((framePtr == null))) {
 result_1410262 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(auxWriteStackTrace_1380038(framePtr) || []), NTI1188013);
 }
 else {
 result_1410262 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI1188013);
 }
return result_1410262;
}
function newSeq_1455128(len_1455131) {
var result_1455133 = [];
 result_1455133 = new Array(len_1455131); for (var i=0;i<len_1455131;++i) {result_1455133[i]=null;}
return result_1455133;
}
function unhandledException(e_1415059) {
 var buf_1415060 = [[]];
 if (!(((e_1415059.message).length == 0))) {
 buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("Error: unhandled exception: "));;
 buf_1415060[0].push.apply(buf_1415060[0], e_1415059.message);;
 }
 else {
 buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("Error: unhandled exception"));;
 }
 buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit(" ["));;
 add_1357211(buf_1415060, 0, e_1415059.name);
 buf_1415060[0].push.apply(buf_1415060[0], makeNimstrLit("]\x0A"));;
 buf_1415060[0].push.apply(buf_1415060[0], rawWriteStackTrace_1410260());;
 var cbuf_1420201 = toJSStr(buf_1415060[0]);
 framePtr = null;
 if (typeof(Error) !== "undefined") {
 throw new Error(cbuf_1420201);
}
else {
 throw cbuf_1420201;
}
}
function raiseIndexError(i_1440047, a_1440048, b_1440049) {
 var Tmp1;
 if ((b_1440049 < a_1440048)) {
 Tmp1 = makeNimstrLit("index out of bounds, the container is empty");
 }
 else {
 Tmp1 = (makeNimstrLit("index ") || []).concat(cstrToNimstr((i_1440047)+"") || [],makeNimstrLit(" not in ") || [],cstrToNimstr((a_1440048)+"") || [],makeNimstrLit(" .. ") || [],cstrToNimstr((b_1440049)+"") || []);
 }
 raiseException({message: nimCopy(null, Tmp1, NTI1188013), parent: null, m_type: NTI1194649, name: null, trace: [], up: null}, "IndexDefect");
}
function contains_1855072(s_1855078, value_1855079) {
var result_1855080 = false;
 result_1855080 = ((s_1855078.a <= value_1855079) && (value_1855079 <= s_1855078.b));
return result_1855080;
}
function HEX2EHEX2E_1855001(a_1855006, b_1855008) {
var result_1855014 = ({a: 0, b: 0});
 nimCopy(result_1855014, {a: a_1855006, b: b_1855008}, NTI1855011);
return result_1855014;
}
function raiseOverflow() {
 raiseException({message: makeNimstrLit("over- or underflow"), parent: null, m_type: NTI1194637, name: null, trace: [], up: null}, "OverflowDefect");
}
function checkOverflowInt(a_1460403) {
  if (a_1460403 > 2147483647 || a_1460403 < -2147483648) raiseOverflow();
}
function sysFatal_1305418(message_1305422) {
 raiseException({message: nimCopy(null, message_1305422, NTI1188013), m_type: NTI1194641, parent: null, name: null, trace: [], up: null}, "AssertionDefect");
}
function raiseAssert_1305414(msg_1305416) {
 sysFatal_1305418(msg_1305416);
}
function failedAssertImpl_1305480(msg_1305482) {
 raiseAssert_1305414(msg_1305482);
}
  var Tmp5;
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
var s_1852002 = [[]];
L1: do {
var c_1852004 = [0];
var i_1865217 = 0;
var L_1865218 = 5;
L2: do {
 L3: while (true) {
 if (!(i_1865217 < L_1865218)) break L3;
  c_1852004[0] = makeNimstrLit("1_2_3")[chckIndx(i_1865217, 0, (makeNimstrLit("1_2_3")).length-1)];
  L4: do {
  if (contains_1855072(HEX2EHEX2E_1855001(48, 57), c_1852004[0])) {
  Tmp5 = c_1852004[0];
  }
  else {
   break L4;
  }
  } while(false);
  addChar(s_1852002[0], Tmp5);;
  i_1865217 = addInt(i_1865217, 1);
  if (!((5 == L_1865218))) {
  failedAssertImpl_1305480(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.4.8/lib/system/iterators.nim(222, 11) `len(a) == L` the length of the string changed while iterating over it"));
  }
 }
} while(false);
} while(false);
if (!(eqStrings(s_1852002[0], makeNimstrLit("123")))) {
failedAssertImpl_1305480(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}
framePtr = F.prev;
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
framePtr = F.prev;
var F={procname:"module temp",prev:framePtr,filename:"/home/runner/work/Nim/Nim/temp.nim",line:0};
framePtr = F;
framePtr = F.prev;

Stats

• Started 2024-08-03T19:34:33
• Finished 2024-08-03T19:34:33
• Duration

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.2.18 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp:460
    throw new Error(cbuf_190201);
    ^

Error: Error: unhandled exception: /home/runner/work/Nim/Nim/temp.nim(3, 10) `s == "123"`  [AssertionError]
No stack traceback available

    at unhandledException (/home/runner/work/Nim/Nim/temp:460:11)
    at raiseException (/home/runner/work/Nim/Nim/temp:275:5)
    at sys_fatal_102618 (/home/runner/work/Nim/Nim/temp:470:5)
    at raise_assert_102614 (/home/runner/work/Nim/Nim/temp:475:5)
    at failed_assert_impl_102680 (/home/runner/work/Nim/Nim/temp:480:5)
    at Object.<anonymous> (/home/runner/work/Nim/Nim/temp:513:1)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
    at Module.load (node:internal/modules/cjs/loader:1203:32)
    at Module._load (node:internal/modules/cjs/loader:1019:12)

Node.js v18.20.4
Error: execution of an external program failed: '/usr/local/bin/node /home/runner/work/Nim/Nim/temp '

IR

Compiled filesize 17.30 Kb (17,719 bytes)

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI143 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI160043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI6008 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6286 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI114 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI6281 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI6217 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6219 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6241 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI112 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI110 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI625011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NNI625011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI110, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI110, name: "b", sons: null}]};
NTI625011.node = NNI625011;
var NNI6241 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6241.node = NNI6241;
var NNI6219 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6219.node = NNI6219;
NTI6281.base = NTI6217;
NTI6286.base = NTI6217;
var NNI6217 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI6281, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI114, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI112, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI112, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI6286, name: "up", sons: null}]};
NTI6217.node = NNI6217;
var NNI6008 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6008.node = NNI6008;
NTI6217.base = NTI6008;
NTI6219.base = NTI6217;
NTI6241.base = NTI6219;
var NNI160043 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI114, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI143, name: "Field1", sons: null}]};
NTI160043.node = NNI160043;
function makeNimstrLit(c_225062) {
 var ln = c_225062.length;
var result = new Array(ln);
for (var i = 0; i < ln; ++i) {
 result[i] = c_225062.charCodeAt(i);
}
return result;
}
function addChar(x_275031, c_275032) {
 x_275031.push(c_275032);
}
function setConstr() {
  var result = {};
 for (var i = 0; i < arguments.length; ++i) {
 var x = arguments[i];
 if (typeof(x) == "object") {
  for (var j = x[0]; j <= x[1]; ++j) {
  result[j] = true;
  }
 } else {
  result[x] = true;
 }
 }
 return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_240023, src_240024, ti_240025) {
var result_245219 = null;
 switch (ti_240025.kind) {
 case 21:
 case 22:
 case 23:
 case 5:
 if (!(is_fat_pointer_235401(ti_240025))) {
 result_245219 = src_240024;
 }
 else {
  result_245219 = [src_240024[0], src_240024[1]];
 }
 break;
 case 19:
   if (dest_240023 === null || dest_240023 === undefined) {
  dest_240023 = {};
 }
 else {
  for (var key in dest_240023) { delete dest_240023[key]; }
 }
 for (var key in src_240024) { dest_240023[key] = src_240024[key]; }
 result_245219 = dest_240023;
 break;
 case 18:
 case 17:
 if (!((ti_240025.base == null))) {
 result_245219 = nimCopy(dest_240023, src_240024, ti_240025.base);
 }
 else {
 if ((ti_240025.kind == 17)) {
 result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {m_type: ti_240025} : dest_240023;
 }
 else {
  result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {} : dest_240023;
 }
 }
 nimCopyAux(result_245219, src_240024, ti_240025.node);
 break;
 case 24:
 case 4:
 case 27:
 case 16:
   if (src_240024 === null) {
  result_245219 = null;
 }
 else {
  if (dest_240023 === null || dest_240023 === undefined) {
  dest_240023 = new Array(src_240024.length);
  }
  else {
  dest_240023.length = src_240024.length;
  }
  result_245219 = dest_240023;
  for (var i = 0; i < src_240024.length; ++i) {
  result_245219[i] = nimCopy(result_245219[i], src_240024[i], ti_240025.base);
  }
 }
 break;
 case 28:
   if (src_240024 !== null) {
  result_245219 = src_240024.slice(0);
 }
 break;
 default: 
 result_245219 = src_240024;
 break;
 }
return result_245219;
}
function arrayConstr(len_250067, value_250068, typ_250069) {
  var result = new Array(len_250067);
 for (var i = 0; i < len_250067; ++i) result[i] = nimCopy(null, value_250068, typ_250069);
 return result;
}
function cstrToNimstr(c_225079) {
 var ln = c_225079.length;
var result = new Array(ln);
var r = 0;
for (var i = 0; i < ln; ++i) {
 var ch = c_225079.charCodeAt(i);
 if (ch < 128) {
 result[r] = ch;
 }
 else {
 if (ch < 2048) {
  result[r] = (ch >> 6) | 192;
 }
 else {
  if (ch < 55296 || ch >= 57344) {
  result[r] = (ch >> 12) | 224;
  }
  else {
   ++i;
   ch = 65536 + (((ch & 1023) << 10) | (c_225079.charCodeAt(i) & 1023));
   result[r] = (ch >> 18) | 240;
   ++r;
   result[r] = ((ch >> 12) & 63) | 128;
  }
  ++r;
  result[r] = ((ch >> 6) & 63) | 128;
 }
 ++r;
 result[r] = (ch & 63) | 128;
 }
 ++r;
}
return result;
}
function toJSStr(s_225096) {
     var Tmp5;
   var Tmp7;
var result_225097 = null;
 var res_225170 = new_seq_225128((s_225096 != null ? s_225096.length : 0));
 var i_225172 = 0;
 var j_225174 = 0;
 L1: do {
  L2: while (true) {
  if (!(i_225172 < (s_225096 != null ? s_225096.length : 0))) break L2;
  var c_225175 = s_225096[i_225172];
  if ((c_225175 < 128)) {
  res_225170[j_225174] = String.fromCharCode(c_225175);
  i_225172 += 1;
  }
  else {
   var helper_225198 = new_seq_225128(0);
   L3: do {
    L4: while (true) {
    if (!true) break L4;
    var code_225199 = c_225175.toString(16);
    if (((code_225199 != null ? code_225199.length : 0) == 1)) {
    if (helper_225198 != null) { helper_225198.push("%0"); } else { helper_225198 = ["%0"]; };
    }
    else {
    if (helper_225198 != null) { helper_225198.push("%"); } else { helper_225198 = ["%"]; };
    }
    if (helper_225198 != null) { helper_225198.push(code_225199); } else { helper_225198 = [code_225199]; };
    i_225172 += 1;
     if (((s_225096 != null ? s_225096.length : 0) <= i_225172)) Tmp5 = true; else {                      Tmp5 = (s_225096[i_225172] < 128);                    }                  if (Tmp5) {
    break L3;
    }
    c_225175 = s_225096[i_225172];
    }
   } while(false);
++excHandler;
   Tmp7 = framePtr;
   try {
   res_225170[j_225174] = decodeURIComponent(helper_225198.join(""));
--excHandler;
} catch (EXC) {
var prevJSError = lastJSError;
lastJSError = EXC;
--excHandler;
   framePtr = Tmp7;
   res_225170[j_225174] = helper_225198.join("");
   lastJSError = prevJSError;
   } finally {
   framePtr = Tmp7;
   }
  }
  j_225174 += 1;
  }
 } while(false);
 if (res_225170 === null) res_225170 = [];
   if (res_225170.length < j_225174) { for (var i=res_225170.length;i<j_225174;++i) res_225170.push(null); }
   else { res_225170.length = j_225174; };
 result_225097 = res_225170.join("");
return result_225097;
}
function raiseException(e_190218, ename_190219) {
 e_190218.name = ename_190219;
 if ((excHandler == 0)) {
 unhandledException(e_190218);
 }
 e_190218.trace = nimCopy(null, raw_write_stack_trace_180059(), NTI112);
 throw e_190218;
}
function eqStrings(a_230222, b_230223) {
  if (a_230222 == b_230223) return true;
 if (a_230222 === null && b_230223.length == 0) return true;
 if (b_230223 === null && a_230222.length == 0) return true;
 if ((!a_230222) || (!b_230223)) return false;
 var alen = a_230222.length;
 if (alen != b_230223.length) return false;
 for (var i = 0; i < alen; ++i)
 if (a_230222[i] != b_230223[i]) return false;
 return true;
}
process.exitCode = 0;
var global_raise_hook_142018 = [null];
var local_raise_hook_142023 = [null];
var out_of_mem_hook_142026 = [null];
var unhandled_exception_hook_142031 = [null];
function contains_625072(s_625078, value_625079) {
var result_625080 = false;
 result_625080 = ((s_625078.a <= value_625079) && (value_625079 <= s_625078.b));
return result_625080;
}
function is_fat_pointer_235401(ti_235403) {
var result_235404 = false;
BeforeRet: do {
 result_235404 = !((ConstSet1[ti_235403.base.kind] != undefined));
 break BeforeRet;
} while (false);
return result_235404;
}
function nimCopyAux(dest_240028, src_240029, n_240031) {
 switch (n_240031.kind) {
 case 0:
 break;
 case 1:
   dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
 break;
 case 2:
  for (var i = 0; i < n_240031.sons.length; i++) {
 nimCopyAux(dest_240028, src_240029, n_240031.sons[i]);
 }
 break;
 case 3:
   dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
 for (var i = 0; i < n_240031.sons.length; ++i) {
  nimCopyAux(dest_240028, src_240029, n_240031.sons[i][1]);
 }
 break;
 }
}
function HEX2EHEX2E_625001(a_625006, b_625008) {
var result_625014 = ({a: 0, b: 0});
 nimCopy(result_625014, {a: a_625006, b: b_625008}, NTI625011);
return result_625014;
}
function add_142042(x_142045, x_142045_Idx, y_142046) {
  if (x_142045[x_142045_Idx] === null) { x_142045[x_142045_Idx] = []; }
 var off = x_142045[x_142045_Idx].length;
 x_142045[x_142045_Idx].length += y_142046.length;
 for (var i = 0; i < y_142046.length; ++i) {
  x_142045[x_142045_Idx][off+i] = y_142046.charCodeAt(i);
 }
}
function aux_write_stack_trace_160038(f_160040) {
  var Tmp3;
var result_160041 = [null];
 var it_160049 = f_160040;
 var i_160051 = 0;
 var total_160053 = 0;
 var temp_frames_160060 = arrayConstr(64, {Field0: null, Field1: 0}, NTI160043);
 L1: do {
  L2: while (true) {
  if (!!((it_160049 == null))) Tmp3 = false; else {            Tmp3 = (i_160051 <= 63);          }        if (!Tmp3) break L2;
  temp_frames_160060[i_160051].Field0 = it_160049.procname;
  temp_frames_160060[i_160051].Field1 = it_160049.line;
  i_160051 += 1;
  total_160053 += 1;
  it_160049 = it_160049.prev;
  }
 } while(false);
 L4: do {
  L5: while (true) {
  if (!!((it_160049 == null))) break L5;
  total_160053 += 1;
  it_160049 = it_160049.prev;
  }
 } while(false);
 result_160041[0] = nimCopy(null, [], NTI112);
 if (!((total_160053 == i_160051))) {
 if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("(")); } else { result_160041[0] = makeNimstrLit("("); };
 if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr(((total_160053 - i_160051))+"")); } else { result_160041[0] = cstrToNimstr(((total_160053 - i_160051))+"").slice(); };
 if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(" calls omitted) ...\x0A")); } else { result_160041[0] = makeNimstrLit(" calls omitted) ...\x0A"); };
 }
 L6: do {
 var j_175236 = 0;
 var colontmp__635227 = 0;
 colontmp__635227 = (i_160051 - 1);
 var res_635232 = colontmp__635227;
 L7: do {
  L8: while (true) {
  if (!(0 <= res_635232)) break L8;
   j_175236 = res_635232;
   add_142042(result_160041, 0, temp_frames_160060[j_175236].Field0);
   if ((0 < temp_frames_160060[j_175236].Field1)) {
   if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(", line: ")); } else { result_160041[0] = makeNimstrLit(", line: "); };
   if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr((temp_frames_160060[j_175236].Field1)+"")); } else { result_160041[0] = cstrToNimstr((temp_frames_160060[j_175236].Field1)+"").slice(); };
   }
   if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("\x0A")); } else { result_160041[0] = makeNimstrLit("\x0A"); };
   res_635232 -= 1;
  }
 } while(false);
 } while(false);
return result_160041[0];
}
function raw_write_stack_trace_180059() {
var result_180061 = null;
 if (!((framePtr == null))) {
 result_180061 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(aux_write_stack_trace_160038(framePtr) || []), NTI112);
 }
 else {
 result_180061 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI112);
 }
return result_180061;
}
function new_seq_225128(len_225131) {
var result_225133 = null;
 result_225133 = new Array(len_225131); for (var i=0;i<len_225131;++i) {result_225133[i]=null;}
return result_225133;
}
function unhandledException(e_185059) {
 var buf_185060 = [[]];
 if (!(((e_185059.message != null ? e_185059.message.length : 0) == 0))) {
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception: ")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception: "); };
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(e_185059.message); } else { buf_185060[0] = e_185059.message.slice(); };
 }
 else {
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception"); };
 }
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit(" [")); } else { buf_185060[0] = makeNimstrLit(" ["); };
 add_142042(buf_185060, 0, e_185059.name);
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("]\x0A")); } else { buf_185060[0] = makeNimstrLit("]\x0A"); };
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(raw_write_stack_trace_180059()); } else { buf_185060[0] = raw_write_stack_trace_180059().slice(); };
 var cbuf_190201 = toJSStr(buf_185060[0]);
 framePtr = null;
 if (typeof(Error) !== "undefined") {
 throw new Error(cbuf_190201);
}
else {
 throw cbuf_190201;
}
}
function sys_fatal_102618(message_102622) {
 raiseException({message: nimCopy(null, message_102622, NTI112), m_type: NTI6241, parent: null, name: null, trace: null, up: null}, "AssertionError");
}
function raise_assert_102614(msg_102616) {
 sys_fatal_102618(msg_102616);
}
function failed_assert_impl_102680(msg_102682) {
 raise_assert_102614(msg_102682);
}
  var Tmp5;
var s_622003 = [[]];
L1: do {
var c_622005 = [0];
var i_635217 = 0;
var l_635218 = 5;
L2: do {
 L3: while (true) {
 if (!(i_635217 < l_635218)) break L3;
  c_622005[0] = makeNimstrLit("1_2_3")[i_635217];
  L4: do {
  if (contains_625072(HEX2EHEX2E_625001(48, 57), c_622005[0])) {
  Tmp5 = c_622005[0];
  }
  else {
   break L4;
  }
  } while(false);
  if (s_622003[0] != null) { addChar(s_622003[0], Tmp5); } else { s_622003[0] = [Tmp5]; };
  i_635217 += 1;
  if (!((5 == l_635218))) {
  failed_assert_impl_102680(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.2.18/lib/system/iterators.nim(207, 11) `len(a) == L` the length of the string changed while iterating over it"));
  }
 }
} while(false);
} while(false);
if (!(eqStrings(s_622003[0], makeNimstrLit("123")))) {
failed_assert_impl_102680(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}

Stats

• Started 2024-08-03T19:34:36
• Finished 2024-08-03T19:34:36
• Duration

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

1.0.10 👎 FAIL

Output

Error: Command failed: nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch  --run  -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim
/home/runner/work/Nim/Nim/temp.nim(2, 43) Error: expression 'c' is of type 'char' and has to be discarded

IR

Compiled filesize 17.30 Kb (17,719 bytes)

var framePtr = null;
var excHandler = 0;
var lastJSError = null;
if (typeof Int8Array === 'undefined') Int8Array = Array;
if (typeof Int16Array === 'undefined') Int16Array = Array;
if (typeof Int32Array === 'undefined') Int32Array = Array;
if (typeof Uint8Array === 'undefined') Uint8Array = Array;
if (typeof Uint16Array === 'undefined') Uint16Array = Array;
if (typeof Uint32Array === 'undefined') Uint32Array = Array;
if (typeof Float32Array === 'undefined') Float32Array = Array;
if (typeof Float64Array === 'undefined') Float64Array = Array;
var NTI143 = {size: 0,kind: 31,base: null,node: null,finalizer: null};
var NTI160043 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NTI6008 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6286 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI114 = {size: 0,kind: 29,base: null,node: null,finalizer: null};
var NTI6281 = {size: 0,kind: 22,base: null,node: null,finalizer: null};
var NTI6217 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6219 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI6241 = {size: 0, kind: 17, base: null, node: null, finalizer: null};
var NTI112 = {size: 0,kind: 28,base: null,node: null,finalizer: null};
var NTI110 = {size: 0,kind: 2,base: null,node: null,finalizer: null};
var NTI625011 = {size: 0, kind: 18, base: null, node: null, finalizer: null};
var NNI625011 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "a", len: 0, typ: NTI110, name: "a", sons: null}, 
{kind: 1, offset: "b", len: 0, typ: NTI110, name: "b", sons: null}]};
NTI625011.node = NNI625011;
var NNI6241 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6241.node = NNI6241;
var NNI6219 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6219.node = NNI6219;
NTI6281.base = NTI6217;
NTI6286.base = NTI6217;
var NNI6217 = {kind: 2, len: 5, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "parent", len: 0, typ: NTI6281, name: "parent", sons: null}, 
{kind: 1, offset: "name", len: 0, typ: NTI114, name: "name", sons: null}, 
{kind: 1, offset: "message", len: 0, typ: NTI112, name: "msg", sons: null}, 
{kind: 1, offset: "trace", len: 0, typ: NTI112, name: "trace", sons: null}, 
{kind: 1, offset: "up", len: 0, typ: NTI6286, name: "up", sons: null}]};
NTI6217.node = NNI6217;
var NNI6008 = {kind: 2, len: 0, offset: 0, typ: null, name: null, sons: []};
NTI6008.node = NNI6008;
NTI6217.base = NTI6008;
NTI6219.base = NTI6217;
NTI6241.base = NTI6219;
var NNI160043 = {kind: 2, len: 2, offset: 0, typ: null, name: null, sons: [{kind: 1, offset: "Field0", len: 0, typ: NTI114, name: "Field0", sons: null}, 
{kind: 1, offset: "Field1", len: 0, typ: NTI143, name: "Field1", sons: null}]};
NTI160043.node = NNI160043;
function makeNimstrLit(c_225062) {
 var ln = c_225062.length;
var result = new Array(ln);
for (var i = 0; i < ln; ++i) {
 result[i] = c_225062.charCodeAt(i);
}
return result;
}
function addChar(x_275031, c_275032) {
 x_275031.push(c_275032);
}
function setConstr() {
  var result = {};
 for (var i = 0; i < arguments.length; ++i) {
 var x = arguments[i];
 if (typeof(x) == "object") {
  for (var j = x[0]; j <= x[1]; ++j) {
  result[j] = true;
  }
 } else {
  result[x] = true;
 }
 }
 return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_240023, src_240024, ti_240025) {
var result_245219 = null;
 switch (ti_240025.kind) {
 case 21:
 case 22:
 case 23:
 case 5:
 if (!(is_fat_pointer_235401(ti_240025))) {
 result_245219 = src_240024;
 }
 else {
  result_245219 = [src_240024[0], src_240024[1]];
 }
 break;
 case 19:
   if (dest_240023 === null || dest_240023 === undefined) {
  dest_240023 = {};
 }
 else {
  for (var key in dest_240023) { delete dest_240023[key]; }
 }
 for (var key in src_240024) { dest_240023[key] = src_240024[key]; }
 result_245219 = dest_240023;
 break;
 case 18:
 case 17:
 if (!((ti_240025.base == null))) {
 result_245219 = nimCopy(dest_240023, src_240024, ti_240025.base);
 }
 else {
 if ((ti_240025.kind == 17)) {
 result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {m_type: ti_240025} : dest_240023;
 }
 else {
  result_245219 = (dest_240023 === null || dest_240023 === undefined) ? {} : dest_240023;
 }
 }
 nimCopyAux(result_245219, src_240024, ti_240025.node);
 break;
 case 24:
 case 4:
 case 27:
 case 16:
   if (src_240024 === null) {
  result_245219 = null;
 }
 else {
  if (dest_240023 === null || dest_240023 === undefined) {
  dest_240023 = new Array(src_240024.length);
  }
  else {
  dest_240023.length = src_240024.length;
  }
  result_245219 = dest_240023;
  for (var i = 0; i < src_240024.length; ++i) {
  result_245219[i] = nimCopy(result_245219[i], src_240024[i], ti_240025.base);
  }
 }
 break;
 case 28:
   if (src_240024 !== null) {
  result_245219 = src_240024.slice(0);
 }
 break;
 default: 
 result_245219 = src_240024;
 break;
 }
return result_245219;
}
function arrayConstr(len_250067, value_250068, typ_250069) {
  var result = new Array(len_250067);
 for (var i = 0; i < len_250067; ++i) result[i] = nimCopy(null, value_250068, typ_250069);
 return result;
}
function cstrToNimstr(c_225079) {
 var ln = c_225079.length;
var result = new Array(ln);
var r = 0;
for (var i = 0; i < ln; ++i) {
 var ch = c_225079.charCodeAt(i);
 if (ch < 128) {
 result[r] = ch;
 }
 else {
 if (ch < 2048) {
  result[r] = (ch >> 6) | 192;
 }
 else {
  if (ch < 55296 || ch >= 57344) {
  result[r] = (ch >> 12) | 224;
  }
  else {
   ++i;
   ch = 65536 + (((ch & 1023) << 10) | (c_225079.charCodeAt(i) & 1023));
   result[r] = (ch >> 18) | 240;
   ++r;
   result[r] = ((ch >> 12) & 63) | 128;
  }
  ++r;
  result[r] = ((ch >> 6) & 63) | 128;
 }
 ++r;
 result[r] = (ch & 63) | 128;
 }
 ++r;
}
return result;
}
function toJSStr(s_225096) {
     var Tmp5;
   var Tmp7;
var result_225097 = null;
 var res_225170 = new_seq_225128((s_225096 != null ? s_225096.length : 0));
 var i_225172 = 0;
 var j_225174 = 0;
 L1: do {
  L2: while (true) {
  if (!(i_225172 < (s_225096 != null ? s_225096.length : 0))) break L2;
  var c_225175 = s_225096[i_225172];
  if ((c_225175 < 128)) {
  res_225170[j_225174] = String.fromCharCode(c_225175);
  i_225172 += 1;
  }
  else {
   var helper_225198 = new_seq_225128(0);
   L3: do {
    L4: while (true) {
    if (!true) break L4;
    var code_225199 = c_225175.toString(16);
    if (((code_225199 != null ? code_225199.length : 0) == 1)) {
    if (helper_225198 != null) { helper_225198.push("%0"); } else { helper_225198 = ["%0"]; };
    }
    else {
    if (helper_225198 != null) { helper_225198.push("%"); } else { helper_225198 = ["%"]; };
    }
    if (helper_225198 != null) { helper_225198.push(code_225199); } else { helper_225198 = [code_225199]; };
    i_225172 += 1;
     if (((s_225096 != null ? s_225096.length : 0) <= i_225172)) Tmp5 = true; else {                      Tmp5 = (s_225096[i_225172] < 128);                    }                  if (Tmp5) {
    break L3;
    }
    c_225175 = s_225096[i_225172];
    }
   } while(false);
++excHandler;
   Tmp7 = framePtr;
   try {
   res_225170[j_225174] = decodeURIComponent(helper_225198.join(""));
--excHandler;
} catch (EXC) {
var prevJSError = lastJSError;
lastJSError = EXC;
--excHandler;
   framePtr = Tmp7;
   res_225170[j_225174] = helper_225198.join("");
   lastJSError = prevJSError;
   } finally {
   framePtr = Tmp7;
   }
  }
  j_225174 += 1;
  }
 } while(false);
 if (res_225170 === null) res_225170 = [];
   if (res_225170.length < j_225174) { for (var i=res_225170.length;i<j_225174;++i) res_225170.push(null); }
   else { res_225170.length = j_225174; };
 result_225097 = res_225170.join("");
return result_225097;
}
function raiseException(e_190218, ename_190219) {
 e_190218.name = ename_190219;
 if ((excHandler == 0)) {
 unhandledException(e_190218);
 }
 e_190218.trace = nimCopy(null, raw_write_stack_trace_180059(), NTI112);
 throw e_190218;
}
function eqStrings(a_230222, b_230223) {
  if (a_230222 == b_230223) return true;
 if (a_230222 === null && b_230223.length == 0) return true;
 if (b_230223 === null && a_230222.length == 0) return true;
 if ((!a_230222) || (!b_230223)) return false;
 var alen = a_230222.length;
 if (alen != b_230223.length) return false;
 for (var i = 0; i < alen; ++i)
 if (a_230222[i] != b_230223[i]) return false;
 return true;
}
process.exitCode = 0;
var global_raise_hook_142018 = [null];
var local_raise_hook_142023 = [null];
var out_of_mem_hook_142026 = [null];
var unhandled_exception_hook_142031 = [null];
function contains_625072(s_625078, value_625079) {
var result_625080 = false;
 result_625080 = ((s_625078.a <= value_625079) && (value_625079 <= s_625078.b));
return result_625080;
}
function is_fat_pointer_235401(ti_235403) {
var result_235404 = false;
BeforeRet: do {
 result_235404 = !((ConstSet1[ti_235403.base.kind] != undefined));
 break BeforeRet;
} while (false);
return result_235404;
}
function nimCopyAux(dest_240028, src_240029, n_240031) {
 switch (n_240031.kind) {
 case 0:
 break;
 case 1:
   dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
 break;
 case 2:
  for (var i = 0; i < n_240031.sons.length; i++) {
 nimCopyAux(dest_240028, src_240029, n_240031.sons[i]);
 }
 break;
 case 3:
   dest_240028[n_240031.offset] = nimCopy(dest_240028[n_240031.offset], src_240029[n_240031.offset], n_240031.typ);
 for (var i = 0; i < n_240031.sons.length; ++i) {
  nimCopyAux(dest_240028, src_240029, n_240031.sons[i][1]);
 }
 break;
 }
}
function HEX2EHEX2E_625001(a_625006, b_625008) {
var result_625014 = ({a: 0, b: 0});
 nimCopy(result_625014, {a: a_625006, b: b_625008}, NTI625011);
return result_625014;
}
function add_142042(x_142045, x_142045_Idx, y_142046) {
  if (x_142045[x_142045_Idx] === null) { x_142045[x_142045_Idx] = []; }
 var off = x_142045[x_142045_Idx].length;
 x_142045[x_142045_Idx].length += y_142046.length;
 for (var i = 0; i < y_142046.length; ++i) {
  x_142045[x_142045_Idx][off+i] = y_142046.charCodeAt(i);
 }
}
function aux_write_stack_trace_160038(f_160040) {
  var Tmp3;
var result_160041 = [null];
 var it_160049 = f_160040;
 var i_160051 = 0;
 var total_160053 = 0;
 var temp_frames_160060 = arrayConstr(64, {Field0: null, Field1: 0}, NTI160043);
 L1: do {
  L2: while (true) {
  if (!!((it_160049 == null))) Tmp3 = false; else {            Tmp3 = (i_160051 <= 63);          }        if (!Tmp3) break L2;
  temp_frames_160060[i_160051].Field0 = it_160049.procname;
  temp_frames_160060[i_160051].Field1 = it_160049.line;
  i_160051 += 1;
  total_160053 += 1;
  it_160049 = it_160049.prev;
  }
 } while(false);
 L4: do {
  L5: while (true) {
  if (!!((it_160049 == null))) break L5;
  total_160053 += 1;
  it_160049 = it_160049.prev;
  }
 } while(false);
 result_160041[0] = nimCopy(null, [], NTI112);
 if (!((total_160053 == i_160051))) {
 if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("(")); } else { result_160041[0] = makeNimstrLit("("); };
 if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr(((total_160053 - i_160051))+"")); } else { result_160041[0] = cstrToNimstr(((total_160053 - i_160051))+"").slice(); };
 if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(" calls omitted) ...\x0A")); } else { result_160041[0] = makeNimstrLit(" calls omitted) ...\x0A"); };
 }
 L6: do {
 var j_175236 = 0;
 var colontmp__635227 = 0;
 colontmp__635227 = (i_160051 - 1);
 var res_635232 = colontmp__635227;
 L7: do {
  L8: while (true) {
  if (!(0 <= res_635232)) break L8;
   j_175236 = res_635232;
   add_142042(result_160041, 0, temp_frames_160060[j_175236].Field0);
   if ((0 < temp_frames_160060[j_175236].Field1)) {
   if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit(", line: ")); } else { result_160041[0] = makeNimstrLit(", line: "); };
   if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(cstrToNimstr((temp_frames_160060[j_175236].Field1)+"")); } else { result_160041[0] = cstrToNimstr((temp_frames_160060[j_175236].Field1)+"").slice(); };
   }
   if (result_160041[0] != null) { result_160041[0] = (result_160041[0]).concat(makeNimstrLit("\x0A")); } else { result_160041[0] = makeNimstrLit("\x0A"); };
   res_635232 -= 1;
  }
 } while(false);
 } while(false);
return result_160041[0];
}
function raw_write_stack_trace_180059() {
var result_180061 = null;
 if (!((framePtr == null))) {
 result_180061 = nimCopy(null, (makeNimstrLit("Traceback (most recent call last)\x0A") || []).concat(aux_write_stack_trace_160038(framePtr) || []), NTI112);
 }
 else {
 result_180061 = nimCopy(null, makeNimstrLit("No stack traceback available\x0A"), NTI112);
 }
return result_180061;
}
function new_seq_225128(len_225131) {
var result_225133 = null;
 result_225133 = new Array(len_225131); for (var i=0;i<len_225131;++i) {result_225133[i]=null;}
return result_225133;
}
function unhandledException(e_185059) {
 var buf_185060 = [[]];
 if (!(((e_185059.message != null ? e_185059.message.length : 0) == 0))) {
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception: ")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception: "); };
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(e_185059.message); } else { buf_185060[0] = e_185059.message.slice(); };
 }
 else {
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("Error: unhandled exception")); } else { buf_185060[0] = makeNimstrLit("Error: unhandled exception"); };
 }
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit(" [")); } else { buf_185060[0] = makeNimstrLit(" ["); };
 add_142042(buf_185060, 0, e_185059.name);
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(makeNimstrLit("]\x0A")); } else { buf_185060[0] = makeNimstrLit("]\x0A"); };
 if (buf_185060[0] != null) { buf_185060[0] = (buf_185060[0]).concat(raw_write_stack_trace_180059()); } else { buf_185060[0] = raw_write_stack_trace_180059().slice(); };
 var cbuf_190201 = toJSStr(buf_185060[0]);
 framePtr = null;
 if (typeof(Error) !== "undefined") {
 throw new Error(cbuf_190201);
}
else {
 throw cbuf_190201;
}
}
function sys_fatal_102618(message_102622) {
 raiseException({message: nimCopy(null, message_102622, NTI112), m_type: NTI6241, parent: null, name: null, trace: null, up: null}, "AssertionError");
}
function raise_assert_102614(msg_102616) {
 sys_fatal_102618(msg_102616);
}
function failed_assert_impl_102680(msg_102682) {
 raise_assert_102614(msg_102682);
}
  var Tmp5;
var s_622003 = [[]];
L1: do {
var c_622005 = [0];
var i_635217 = 0;
var l_635218 = 5;
L2: do {
 L3: while (true) {
 if (!(i_635217 < l_635218)) break L3;
  c_622005[0] = makeNimstrLit("1_2_3")[i_635217];
  L4: do {
  if (contains_625072(HEX2EHEX2E_625001(48, 57), c_622005[0])) {
  Tmp5 = c_622005[0];
  }
  else {
   break L4;
  }
  } while(false);
  if (s_622003[0] != null) { addChar(s_622003[0], Tmp5); } else { s_622003[0] = [Tmp5]; };
  i_635217 += 1;
  if (!((5 == l_635218))) {
  failed_assert_impl_102680(makeNimstrLit("/home/runner/.choosenim/toolchains/nim-1.2.18/lib/system/iterators.nim(207, 11) `len(a) == L` the length of the string changed while iterating over it"));
  }
 }
} while(false);
} while(false);
if (!(eqStrings(s_622003[0], makeNimstrLit("123")))) {
failed_assert_impl_102680(makeNimstrLit("/home/runner/work/Nim/Nim/temp.nim(3, 10) `s == \"123\"` "));
}

Stats

• Started 2024-08-03T19:34:37
• Finished 2024-08-03T19:34:37
• Duration

AST

nnkStmtList.newTree(
  nnkVarSection.newTree(
    nnkIdentDefs.newTree(
      newIdentNode("s"),
      newEmptyNode(),
      newLit("")
    )
  ),
  nnkForStmt.newTree(
    newIdentNode("c"),
    newLit("1_2_3"),
    nnkStmtList.newTree(
      nnkCall.newTree(
        nnkDotExpr.newTree(
          newIdentNode("s"),
          newIdentNode("add")
        ),
        nnkIfExpr.newTree(
          nnkElifExpr.newTree(
            nnkInfix.newTree(
              newIdentNode("in"),
              newIdentNode("c"),
              nnkInfix.newTree(
                newIdentNode(".."),
                newLit('0'),
                newLit('9')
              )
            ),
            nnkStmtList.newTree(
              newIdentNode("c")
            )
          ),
          nnkElseExpr.newTree(
            nnkStmtList.newTree(
              nnkContinueStmt.newTree(
                newEmptyNode()
              )
            )
          )
        )
      )
    )
  ),
  nnkCommand.newTree(
    newIdentNode("doAssert"),
    nnkInfix.newTree(
      newIdentNode("=="),
      newIdentNode("s"),
      newLit("123")
    )
  )
)

Stats

• GCC 11.4.0
• Clang 14.0.0
• NodeJS 20.4
• Created 2024-08-03T19:33:56Z
• Comments 13
• Commands nim js -d:nodejs -d:nimExperimentalAsyncjsThen -d:nimExperimentalJsfetch --run -d:nimDebug -d:nimDebugDlOpen -d:ssl -d:nimDisableCertificateValidation --forceBuild:on --colors:off --verbosity:0 --hints:off --lineTrace:off --nimcache:/home/runner/work/Nim/Nim --out:/home/runner/work/Nim/Nim/temp /home/runner/work/Nim/Nim/temp.nim

🤖 Bug found in 22 minutes bisecting 8 commits at 0 commits per second