2 @section @file{stddef.h}
4 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/basedefs/stddef.h.html}
8 Portability problems fixed by Gnulib:
11 Some platforms fail to provide @code{max_align_t}, which was added in C11.
14 Some old platforms fail to provide @code{wchar_t}.
17 Some platforms provide a @code{NULL} macro that cannot be used in arbitrary
22 Portability problems not fixed by Gnulib:
25 Some platforms provide an @code{offsetof} macro that cannot be used in
26 arbitrary expressions:
28 This problem can be worked around by parenthesizing the
29 @code{offsetof} expression in the unlikely case you use it with
30 @code{sizeof} or @samp{[]}.