2014-07-22 23:37 GMT+02:00 Ray Donnelly <[email protected]>:
> Hello,
>
> While porting msysGit to MSYS2/MinGW-w64 we ran into this:
>
> $ PATH=/mingw64/bin:"$PATH" gcc --version
> gcc.exe (Rev1, Built by MSYS2 project) 4.9.1
>
> $ cat test.c
> #include <unistd.h>
> static inline pid_t fork(void);
> void main() {}
>
> $ PATH=/mingw64/bin:"$PATH" gcc test.c
> test.c:2:21: warning: conflicting types for built-in function 'fork'
> static inline pid_t fork(void);
> ^
>
> Anyone got any ideas about this?
>
GCC has a number of builtin functions like printf, memcpy, and a bunch of
math functions as well. This is mostly for optimization It seems it also
has a builtin "fork", which it really should disable for Windows targets,
but doesn't. I'd file a bug report, GCC shouldn't have a builtin fork on
Windows.
Also note that main should return int, not void. The latter is technically
undefined behavior.
Cheers,
Ruben
> Best regards,
>
> Ray.
>
>
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