Closed
Description
Description
This used to work and is a recent breakage. Jsony tests cough this: https://github.com/treeform/jsony/
Tiny code example to reproduce:
proc parseHook*(v: var ref int) =
var a: ref int
new(a)
a[] = 123
v = a
proc fromJson2*(): ref int =
parseHook(result)
echo fromJson2()[]Nim Version
Nim Compiler Version 1.6.10 [Linux: amd64]
Compiled at 2022-11-21
Copyright (c) 2006-2021 by Andreas Rumpf
git hash: f151925
active boot switches: -d:release
Current Output
/home/me/p/try/jsrefint.js:675
rawEcho(HEX24_318767107((Temporary1 = fromJson2_436207632(), Temporary1)[0][Temporary1[1]]));
^
TypeError: Cannot read property 'undefined' of undefined
at Object.<anonymous> (/home/me/p/try/jsrefint.js:675:76)
at Module._compile (internal/modules/cjs/loader.js:999:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
at Module.load (internal/modules/cjs/loader.js:863:32)
at Function.Module._load (internal/modules/cjs/loader.js:708:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
at internal/main/run_main_module.js:17:47
Error: execution of an external program failed: '/usr/bin/node --unhandled-rejections=strict /home/me/p/try/jsrefint.js '
Expected Output
123
Possible Solution
If you don't use return, but call it some other way it works:
proc parseHook*(v: var ref int) =
var a: ref int
new(a)
a[] = 123
v = a
var
b: ref int
parseHook(b)or don't use ref int
proc parseHook*(v: var int) =
v = 123
proc fromJson2*(): int =
parseHook(result)
echo fromJson2()also works.
Its only when ref int + result there is an issue.
Additional Information
This works with C backed no issues.