Re: Compiling in mingw-ucrt runtime

[Po Lu via "Emacs development discussions." <emacs-devel@gnu.org>]

Arthur Miller <arthur.miller@live.com> writes:

> diff --git a/src/sysdep.c b/src/sysdep.c
> index 3a6829dd27a..5d294ca1bdf 100644
> --- a/src/sysdep.c
> +++ b/src/sysdep.c
> @@ -2981,7 +2981,7 @@ close_output_streams (void)
>    fflush (stderr);
>    fflush (stdout);
>  #else /* !__ANDROID__ */
> -  if (close_stream (stdout) != 0)
> +  if (close_stream (stdout) != 0 && errno && (errno != EINTR))
>      {
>        emacs_perror ("Write error to standard output");
>        _exit (EXIT_FAILURE);
> @@ -2993,7 +2993,10 @@ close_output_streams (void)
>    if (err | (ADDRESS_SANITIZER
>  	     ? fflush (stderr) != 0 || ferror (stderr)
>  	     : close_stream (stderr) != 0))
> -    _exit (EXIT_FAILURE);
> +    {
> +      if (errno && (errno != EINTR))
> +	_exit (EXIT_FAILURE);
> +    }
>  #endif /* __ANDROID__ */
>  }
>  \f

Why is this change necessary to build Emacs with a previously
unsupported C library?  If it is, shouldn't whatever problem it
circumvents be addressed in Gnulib (which provides close_stream), and
not in Emacs?