2 @section @file{stddef.h}
4 POSIX specification: @url{http://www.opengroup.org/susv3xbd/stddef.h.html}
8 Portability problems fixed by Gnulib:
11 Some old platforms fail to provide @code{wchar_t}.
14 Some platforms provide a @code{NULL} macro that cannot be used in arbitrary
19 Portability problems not fixed by Gnulib: