[PATCH v2] wchar: Define va_list for POSIX (BZ #30035)

[Adhemerval Zanella Netto]

Ping.

On 24/01/23 14:49, Adhemerval Zanella wrote:
> This was uncovered by a recent clang change [1].  Different than ISO C,
> POSIX states that va_list should be exported by wchar.h [2].
> 
> Checked on x86_64-linux-gnu and aarch64-linux-gnu.
> 
> [1] https://reviews.llvm.org/D137268
> [2] https://pubs.opengroup.org/onlinepubs/9699919799.2018edition/basedefs/wchar.h.html
> ---
>  conform/data/wchar.h-data |  3 +++
>  wcsmbs/wchar.h            | 11 +++++++++++
>  2 files changed, 14 insertions(+)
> 
> diff --git a/conform/data/wchar.h-data b/conform/data/wchar.h-data
> index e414651a33..0af74e14bc 100644
> --- a/conform/data/wchar.h-data
> +++ b/conform/data/wchar.h-data
> @@ -15,6 +15,9 @@ type size_t
>  type locale_t
>  # endif
>  tag {struct tm}
> +# if !defined ISO99 && !defined ISO11 && !defined UNIX98
> +type va_list
> +# endif
>  
>  function wint_t btowc (int)
>  function int fwprintf (FILE*, const wchar_t*, ...)
> diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h
> index 69e920b8c2..ca145bb8d2 100644
> --- a/wcsmbs/wchar.h
> +++ b/wcsmbs/wchar.h
> @@ -37,6 +37,17 @@
>  #define __need___va_list
>  #include <stdarg.h>
>  
> +#if defined __USE_XOPEN2K || defined __USE_XOPEN2K8
> +# ifdef __GNUC__
> +#  ifndef _VA_LIST_DEFINED
> +typedef __gnuc_va_list va_list;
> +#   define _VA_LIST_DEFINED
> +#  endif
> +# else
> +#  include <stdarg.h>
> +# endif
> +#endif
> +
>  #include <bits/wchar.h>
>  #include <bits/types/wint_t.h>
>  #include <bits/types/mbstate_t.h>