symbols in the _FOO_T_ family, stays defined even after its
corresponding type is defined). If we define wchar_t, then we
must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if
- we undef _WCHAR_T_, then we must also define rune_t, since
+ we undef _WCHAR_T_, then we must also define rune_t, since
headers like runetype.h assume that if machine/ansi.h is included,
and _BSD_WCHAR_T_ is not defined, then rune_t is available.
machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of
#ifndef offsetof
/* Offset of member MEMBER in a struct of type TYPE. */
+#if defined(__GNUC__)
#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
+#else
+#define offsetof(TYPE, MEMBER) ((size_t)&(((TYPE *)0)->MEMBER))
+#endif
#endif /* !offsetof */