On Thursday 20 March 2025 20:38:57 Pali Rohár wrote:
> Hello, I started getting new compile warnings during compilation of
> mingw-w64 runtime.
>
> In file included from math/modfl.c:6:
> .../mingw-w64-headers/crt/fenv.h:64:39: warning: ‘__mingw_fe_dfl_env’
> initialized and declared ‘extern’
> extern const __MINGW_SELECTANY fenv_t __mingw_fe_dfl_env = { 0, 0 };
> ^~~~~~~~~~~~~~~~~~
> .../mingw-w64-headers/crt/fenv.h:72:39: warning: ‘__mingw_fe_pc64_env’
> initialized and declared ‘extern’
> extern const __MINGW_SELECTANY fenv_t __mingw_fe_pc64_env = { 0x3f3f003f, 0
> };
> ^~~~~~~~~~~~~~~~~~~
> .../mingw-w64-headers/crt/fenv.h:76:39: warning: ‘__mingw_fe_pc53_env’
> initialized and declared ‘extern’
> extern const __MINGW_SELECTANY fenv_t __mingw_fe_pc53_env = { 0x3f3f103f, 0
> };
> ^~~~~~~~~~~~~~~~~~~
>
> I think that it is related to commit 9c27617e016f ("headers: Use
> selectany fenv_t pointers for FE_*_ENV macros.").
>
> For me it looks really a bad idea to define a global variable in public
> header file with value and also with extern keyword.
Hello, have you looked at this? I think that the "extern" keyword should
be removed here as it is not needed and also cause those gcc warnings.
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