fixes #14444; add genLineDir before assignment (#21201)

* fixes #14444; add `genLineDir` before raises * add a test case * fixes differently
nim-lang · Dec 29, 2022 · 705da9d · 705da9d
1 parent e602ebe
commit 705da9d
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diff --git a/compiler/ccgstmts.nim b/compiler/ccgstmts.nim
@@ -1620,6 +1620,7 @@ proc genAsgn(p: BProc, e: PNode, fastAsgn: bool) =
     initLoc(a, locNone, le, OnUnknown)
     a.flags.incl(lfEnforceDeref)
     a.flags.incl(lfPrepareForMutation)
+    genLineDir(p, le) # it can be a nkBracketExpr, which may raise
     expr(p, le, a)
     a.flags.excl(lfPrepareForMutation)
     if fastAsgn: incl(a.flags, lfNoDeepCopy)

diff --git a/tests/errmsgs/t14444.nim b/tests/errmsgs/t14444.nim
@@ -0,0 +1,14 @@
+discard """
+  matrix: "--hints:off"
+  exitcode: "1"
+  output: '''
+t14444.nim(13)           t14444
+fatal.nim(51)            sysFatal
+Error: unhandled exception: index out of bounds, the container is empty [IndexDefect]
+'''
+"""
+
+when true: # bug #14444
+  var i: string
+  i[10] = 'j'
+  echo i