@node getgrgid_r
@subsection @code{getgrgid_r}
@findex getgrgid_r

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/getgrgid_r.html}

Gnulib module: extensions
@mindex extensions

Portability problems fixed by Gnulib:
@itemize
@item
This function has an incompatible declaration on some platforms:
Solaris 11.3 (when @code{_POSIX_PTHREAD_SEMANTICS} is not defined).
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8, mingw, MSVC 14, Android 6.0.
@end itemize
