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[4.3 net 2]: If _SIZE_T_, etc. are undefined then type is already declared.

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[4.3 net 2]: Force inclusion of ansi.h.
Undef _SIZE_T_, _PTRDIFF_T_, _WCHAR_T_ at end.

From-SVN: r2669
This commit is contained in:
Richard Stallman 1992-10-31 21:27:50 +00:00
parent 98126ed6a4
commit 6be564d070
1 changed files with 31 additions and 6 deletions
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37
gcc/ginclude/stddef.h
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@ -17,14 +17,29 @@
/* This avoids lossage on SunOS but only if stdtypes.h comes first.
There's no way to win with the other order! Sun lossage. */
/* In 4.3bsd-net2, machine/ansi.h defines these symbols for some other
purpose. Undef them to prevent them from confusing this file. */
#ifdef _ANSI_H_
#undef _PTRDIFF_T_
#undef _SIZE_T_
#undef _WCHAR_T_
/* On 4.3bsd-net2, make sure ansi.h is included, so we have
one less case to deal with in the following. */
#if defined (__BSD_NET2__) || defined (____386BSD____)
#include <ansi.h>
#endif
/* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
defined if the corresponding type is *not* defined. */
#ifdef _ANSI_H_
#ifndef _SIZE_T_
#define _SIZE_T
#endif
#ifndef _PTRDIFF_T_
#define _PTRDIFF_T
#endif
#ifndef _WCHAR_T_
#define _WCHAR_T
#endif
#undef _SIZE_T_
#undef _PTRDIFF_T_
#undef _WCHAR_T_
#endif /* _ANSI_H_ */
/* In case nobody has defined these types, but we aren't running under
GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE__TYPE__, and
__WCHAR_TYPE__ have reasonable values. This can happen if the
@ -147,6 +162,16 @@ typedef __WCHAR_TYPE__ wchar_t;
#undef __need_wchar_t
#endif /* _STDDEF_H or __need_wchar_t. */
/* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
are already defined. We need not worry about the case of wanting just
one of these types, not on 4.3bsd-net2, because only the GNU libc
header files do that. */
#ifdef _ANSI_H_
#undef _PTRDIFF_T_
#undef _SIZE_T_
#undef _WCHAR_T_
#endif
#endif /* __sys_stdtypes_h */
/* A null pointer constant. */