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@node stddef.h
@section @file{stddef.h}
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/basedefs/stddef.h.html}
Gnulib module: stddef
Portability problems fixed by Gnulib:
@itemize
@item
Some old platforms fail to provide @code{wchar_t}.
@item
Some platforms provide a @code{NULL} macro that cannot be used in arbitrary
expressions:
NetBSD 5.0
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
Some platforms provide an @code{offsetof} macro that cannot be used in
arbitrary expressions:
Solaris 11 2010-11
This problem can be worked around by parenthesizing the
@code{offsetof} expression in the unlikely case you use it with
@code{sizeof} or @samp{[]}.
@end itemize
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