stddef.h - GNU Gnulib

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8.47 `stddef.h`

POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/basedefs/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:

Some platforms provide an offsetof macro that cannot be used in arbitrary expressions: Solaris 11 2011-11 This problem can be worked around by parenthesizing the offsetof expression in the unlikely case you use it with sizeof or ‘[]’.