stddef.h
========

POSIX specification: http://www.opengroup.org/susv3xbd/stddef.h.html

Gnulib module: stddef

Portability problems fixed by Gnulib:

  * Some old platforms fail to provide wchar_t.

  * Some platforms provide a NULL macro that cannot be used in arbitrary expressions: NetBSD 5.0

Portability problems not fixed by Gnulib: