svn commit: r221476 - head/sys/sys

[David E. O'Brien]

Author: obrien
Date: Thu May  5 02:35:25 2011
New Revision: 221476
URL: http://svn.freebsd.org/changeset/base/221476

Log:
  Guard ptrdiff_t.

Modified:
  head/sys/sys/stddef.h

Modified: head/sys/sys/stddef.h
==============================================================================
--- head/sys/sys/stddef.h	Thu May  5 02:35:11 2011	(r221475)
+++ head/sys/sys/stddef.h	Thu May  5 02:35:25 2011	(r221476)
@@ -33,7 +33,10 @@
 #include <sys/_null.h>
 #include <machine/_types.h>
 
+#ifndef _PTRDIFF_T_DECLARED
 typedef	__ptrdiff_t	ptrdiff_t;
+#define	_PTRDIFF_T_DECLARED
+#endif
 
 #define	offsetof(type, field)	__offsetof(type, field)