Re: #ifndef _GL_WCHAR_H in lib/wchar.in.h

[Bruno Haible]

Albert Chin wrote:
> I missed another
> platform where this is a problem, IRIX. Using the same gnulib-tool
> invocation as on HP-UX:
>   $ ./gnulib-tool --create-testdir --dir=t arpa_inet crypto/md5 \
>   environ filemode fnmatch fnmatch-gnu getdate gettext glob human \
>   iconv_open inet_pton lstat mbswidth memmem mktime modechange poll \
>   regex socklen strcase strftime strptime strtok_r vsnprintf \
>   vsnprintf-posix wcwidth
>   $ cd t
>   $ ./configure
>   $ gmake
>   ...
>   cc -DHAVE_CONFIG_H -I. -I..  -I../intl   -g -c -o getdate.o getdate.c
>   cc-1020 cc: ERROR File = ./wchar.h, Line = 258
>     The identifier "mbstate_t" is undefined.
> 
>     extern size_t wcrtomb (char *s, wchar_t wc, mbstate_t *ps);
>                                                 ^
> 
>   cc-3425 cc: WARNING File = /usr/include/internal/wchar_core.h, Line = 425
>     pragma usage is incorrect as it expects a function or variable name
> 
>     #pragma optional wcrtomb
>                             ^
> 
>   1 error detected in the compilation of "getdate.c".
>   gmake[2]: *** [getdate.o] Error 2
> 
>   $ cd gllib
>   $ cc -DHAVE_CONFIG_H -I. -I.. -I../intl -g -E getdate.c | \
>   grep mbstate_t | head -2
>   extern size_t rpl_wcrtomb (char *s, wchar_t wc, mbstate_t *ps);
>           typedef char    mbstate_t;

Thanks for reporting this. Can you send me the complete output of
"cc -DHAVE_CONFIG_H -I. -I.. -I../intl -g -E getdate.c", please,
together with a copy of the system include files that are involved?
(Private mail is ok in this case.)

I don't reproduce the problem on IRIX 6.5, therefore I have to rely
on your input.

> How about adding something like "|| (defined __sgi && defined
> _GL_JUST_INCLUDE_SYSTEM_WCHAR_H)" to your patch?

That may or may not be the right fix. Let's analyze it first.

Bruno