Gnulib module: stddef
Portability problems fixed by Gnulib:
max_align_t, which was added in C11.
NULLmacro that cannot be used in arbitrary expressions: NetBSD 5.0
Portability problems not fixed by Gnulib:
offsetofmacro that cannot be used in arbitrary expressions: Solaris 11 2011-11 This problem can be worked around by parenthesizing the
offsetofexpression in the unlikely case you use it with