John Marriott wrote:

> I recently started using a ucrt enabled build of mingw64 (gcc 11.2.0) 
> which gives me this compile warning:
> <snip>
> gcc -c -I. -Iproto -DWIN32 -DWINVER=0x0603 -D_WIN32_WINNT=0x0603 
> -DHAVE_PATHDEF -DFEAT_NORMAL -DHAVE_STDINT_H -D__USE_MINGW_ANSI_STDIO 
> -pipe -march=native -Wall -O3 -fomit-frame-pointer -freg-struct-return 
> -fpie -fPIE -DFEAT_GUI_MSWIN -DFEAT_CLIPBOARD evalfunc.c -o 
> gobjnative/evalfunc.o
> In file included from os_win32.h:77,
>                   from vim.h:279,
>                   from evalfunc.c:15:
> evalfunc.c: In function 'f_environ':
> evalfunc.c:3679:27: warning: '__p__environ' redeclared without dllimport 
> attribute: previous dllimport ignored [-Wattributes]
>   3679 |     extern char         **environ;
>        |                           ^~~~~~~
> </snip>
> 
> The attach patch seems to fix it.

Hmm, the warning is for __p__environ, while it points to "environ", and
the added #ifdef removes the extern for _wenviron.  Confusing, but if
this works, then fine.

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