Compile warning on ucrt build of mingw

[John Marriott]

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.

Cheers
John

[Bram Moolenaar]

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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/// Bram Moolenaar -- Br...@Moolenaar.net -- http://www.Moolenaar.net \\\
/// \\\
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[John Marriott]

On 17-Apr-2022 19:58, Bram Moolenaar wrote:
> 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.
>

Hi Bram,

Patch 8.2.4769 fixes it, thanks.

Happy Easter!