Minimal Example Produces invalid _setjmp call on Windows 10

[winrid]

Description

Hello!

This is my first Nim bug report so thanks for any patience if I miss something.

Code snippet that fails to compile:

echo "test"

For some reason produces a call to _setjmp in generated code with a second NIM_NIL argument. Tried both C and C++ backends. AFAIK _setjmp should only take one argument.

Nim Version

$ nim -v
Nim Compiler Version 1.6.8 [Windows: i386]
Compiled at 2022-09-27
Copyright (c) 2006-2021 by Andreas Rumpf

active boot switches: -d:release

Current Output

Hint: used config file 'C:\Users\winrid\.choosenim\toolchains\nim-1.6.8\config\nim.cfg' [Conf]
Hint: used config file 'C:\Users\winrid\.choosenim\toolchains\nim-1.6.8\config\config.nims' [Conf]
.........................................................C:\Users\winrid\nimcache\jb_nimtest1\main.nim_d\@m..@s..@s.choosenim@stoolchains@snim-1.6.8@slib@ssystem@sansi_c.nim.cpp: In function 'int c_setjmp__systemZansi95c_42(int*)':
C:\Users\winrid\nimcache\jb_nimtest1\main.nim_d\@m..@s..@s.choosenim@stoolchains@snim-1.6.8@slib@ssystem@sansi_c.nim.cpp:27:32: error: too many arguments to function 'int _setjmp(int*)'
  result = _setjmp(jmpb, NIM_NIL);
                                ^
In file included from C:\Users\winrid\nimcache\jb_nimtest1\main.nim_d\@m..@s..@s.choosenim@stoolchains@snim-1.6.8@slib@ssystem@sansi_c.nim.cpp:8:0:
c:\mingw\include\setjmp.h:39:37: note: declared here
 _CRTIMP int __cdecl __MINGW_NOTHROW _setjmp (jmp_buf);
                                     ^~~~~~~

CC: ../../.choosenim/toolchains/nim-1.6.8/lib/system/ansi_c.nim
CC: main.nim
Error: execution of an external compiler program 'g++.exe -c -std=gnu++14 -funsigned-char  -w -fmax-errors=3 -fpermissive -mno-ms-bitfields   -IC:\Users\winrid\.choosenim\toolchains\nim-1.6.8\lib -IC:\Users\winrid\Documents\nimtest1 -o C:\Users\winrid\nimcache\jb_nimtest1\main.nim_d\@m..@s..@s.choosenim@stoolchains@snim-1.6.8@slib@ssystem@sansi_c.nim.cpp.o C:\Users\winrid\nimcache\jb_nimtest1\main.nim_d\@m..@s..@s.choosenim@stoolchains@snim-1.6.8@slib@ssystem@sansi_c.nim.cpp' failed with exit code: 1

Expected Output

"test"

Possible Solution

Use WSL

Additional Information

I've tried deleting the nimcache folder (UserDir\nimcache).

[Araq]

Use 1.6.10 or mm:arc or a C compiler that supports _setjmp.

[winrid]

Hey @Araq ! Thanks for replying. I just finished looking through your book :)

--gc=arc does fix it.

I think, my C compiler does support _setjmp? I just updated my toolchain. I will also try 1.6.10....

[winrid]

Updated to 1.6.10 and issue is also gone.