--- Libc/Libc-391/include/stddef.h
+++ Libc/Libc-262/include/stddef.h
@@ -3,20 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
  * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -58,73 +57,35 @@
  *	@(#)stddef.h	5.5 (Berkeley) 4/3/91
  */
 
-#if !defined(__STDDEF_H__)
+#ifndef __STDDEF_H__
+#define __STDDEF_H__
 
-#if !defined(__need_wchar_t) && !defined(__need_size_t) \
-    && !defined(__need_ptrdiff_t) && !defined(__need_NULL) \
-    && !defined(__need_wint_t)
-#define __STDDEF_H__
-#endif /* none of __need_* defined */
+#include <machine/types.h>
+#include <machine/ansi.h>
 
-#include <_types.h>
+typedef	_BSD_PTRDIFF_T_	ptrdiff_t;
 
-#if defined(__STDDEF_H__) || defined(__need_ptrdiff_t)
-#ifndef _PTRDIFF_T
-#define _PTRDIFF_T
-typedef	__darwin_ptrdiff_t	ptrdiff_t;
-#endif /* _PTRDIFF_T */
-#endif /* __STDDEF_H__ || __need_ptrdiff_t */
+#ifndef	_BSD_SIZE_T_DEFINED_
+#define	_BSD_SIZE_T_DEFINED_
+typedef	_BSD_SIZE_T_	size_t;
+#endif
 
-#if defined(__STDDEF_H__) || defined(__need_size_t)
-#ifndef	_SIZE_T
-#define	_SIZE_T
-/* DO NOT REMOVE THIS COMMENT: fixincludes needs to see:
- * _GCC_SIZE_T */
-typedef	__darwin_size_t		size_t;
-#endif /* _SIZE_T */
-#endif /* __STDDEF_H__ || __need_size_t */
+#if !defined(_ANSI_SOURCE)
+#ifndef _BSD_RUNE_T_DEFINED_
+#define _BSD_RUNE_T_DEFINED_
+typedef _BSD_RUNE_T_    rune_t;
+#endif
+#endif
 
-#if defined(__STDDEF_H__) || defined(__need_wchar_t)
-#ifndef	__cplusplus
-#ifndef	_WCHAR_T
-#define	_WCHAR_T
-typedef	__darwin_wchar_t	wchar_t;
-#endif	/* _WCHAR_T */
-#endif	/* __cplusplus */
-#endif /* __STDDEF_H__ || __need_wchar_t */
+#ifndef	_BSD_WCHAR_T_DEFINED_
+#define	_BSD_WCHAR_T_DEFINED_
+typedef	_BSD_WCHAR_T_	wchar_t;
+#endif
 
-#if (defined(__STDDEF_H__) && !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE)) \
-    || defined(__need_wint_t)
-#ifndef	_WINT_T
-#define	_WINT_T
-typedef	__darwin_wint_t		wint_t;
-#endif	/* _WINT_T */
-#endif /* __STDDEF_H__ && !_ANSI_SOURCE && !_POSIX_C_SOURCE || __need_wchar_t */
+#ifndef	NULL
+#define	NULL	0
+#endif
 
-#if defined(__STDDEF_H__) || defined(__need_NULL)
-#ifndef NULL
-#define NULL __DARWIN_NULL
-#endif /* ! NULL */
-#endif /* __STDDEF_H__ || __need_NULL */
-
-#ifdef __STDDEF_H__
-#if defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 5 || __GNUC__ > 3)
-#ifndef __offsetof	/* Deprecated: for source compatability only */
-#define __offsetof(type, field) __builtin_offsetof(type, field)
-#endif
-#define offsetof(type, field) __builtin_offsetof(type, field)
-#else /* ! (gcc >= 3.5) */
-#ifndef __offsetof	/* Deprecated: for source compatability only */
-#define __offsetof(type, field) ((size_t)(&((type *)0)->field))
-#endif
-#define offsetof(type, field) ((size_t)(&((type *)0)->field))
-#endif /* (gcc >= 3.5) */
-#endif /* __STDDEF_H__ */
+#define         offsetof(type, member)  __offsetof(type, member)
 
 #endif /* __STDDEF_H__ */
-
-#undef __need_ptrdiff_t
-#undef __need_size_t
-#undef __need_wchar_t
-#undef __need_wint_t
-#undef __need_NULL