Hi,

2019/11/28 Thu 5:05:12 UTC+9 Christian Brabandt wrote:
>
>
> On Di, 26 Nov 2019, Bram Moolenaar wrote: 
>
> > Patch 8.1.2344 
> > Problem:    Cygwin: warning for using strptime(). 
> > Solution:   Move defining _XOPEN_SOURCE and __USE_XOPEN to vim.h. (Ken 
> Takata, 
> >             closes #5265)  Use 700 for _XOPEN_SOURCE for mkdtemp(). 
> > Files:            src/os_unix.h, src/vim.h 
>
> This still breaks on BSD like systems. 
>
> How about the following patch on top of it? 
>
> diff --git a/src/vim.h b/src/vim.h 
> index 9b49ba1a9..c0053ce14 100644 
> --- a/src/vim.h 
> +++ b/src/vim.h 
> @@ -36,8 +36,8 @@ 
>      Error: configure did not run properly.  Check auto/config.log. 
>  # endif 
>
> -# if defined(UNIX) && !defined(MACOS_X) 
> -// Needed for strptime().  Needs to be done early, since header files can 
> +# if defined(UNIX) && !defined(MACOS_X) && !defined(__unix__) 
> +// Needed for strptime() on Cygwin.  Needs to be done early, since header 
> files can 
>  // include other header files and end up including time.h, where these 
> symbols 
>  // matter for Vim. 
>  // 700 is needed for mkdtemp(). 
>

__unix__ is also defined on Cygwin. So, the warning will occur again.
The original issue looks Cygwin specific, so using __CYGWIN__ might be 
better:

    #ifdef __CYGWIN__
    // Needed for strptime() on Cygwin.  Needs to be done early, since 
header files can
    ...

Then os_unix.h needs to be reverted before 8.1.2344?

Regards,
Ken Takata

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