getgroups
=========

POSIX specification: http://www.opengroup.org/onlinepubs/9699919799/functions/getgroups.html

Gnulib module: getgroups

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: mingw.

  * On some platforms, this function fails to reject a negative count, even though that is less than the size that would be returned: FreeBSD 7.2.

  * On Ultrix 4.3, getgroups (0, NULL) always fails.  See macro AC_FUNC_GETGROUPS.

  * On very old systems, this function operated on an array of int, even though that was a different size than an array of gid_t.

Portability problems not fixed by Gnulib: