Module Name:    src
Committed By:   joerg
Date:           Mon Apr 14 18:18:58 UTC 2014

Modified Files:
        src/common/lib/libc/string: bcopy.c

Log Message:
Using bcopy/memcpy with NULL arguments is valid as long as the size is
also 0.


To generate a diff of this commit:
cvs rdiff -u -r1.9 -r1.10 src/common/lib/libc/string/bcopy.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/common/lib/libc/string/bcopy.c
diff -u src/common/lib/libc/string/bcopy.c:1.9 src/common/lib/libc/string/bcopy.c:1.10
--- src/common/lib/libc/string/bcopy.c:1.9	Wed Mar 18 12:25:06 2009
+++ src/common/lib/libc/string/bcopy.c	Mon Apr 14 18:18:58 2014
@@ -1,4 +1,4 @@
-/*	$NetBSD: bcopy.c,v 1.9 2009/03/18 12:25:06 tsutsui Exp $	*/
+/*	$NetBSD: bcopy.c,v 1.10 2014/04/14 18:18:58 joerg Exp $	*/
 
 /*-
  * Copyright (c) 1990, 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)bcopy.c	8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: bcopy.c,v 1.9 2009/03/18 12:25:06 tsutsui Exp $");
+__RCSID("$NetBSD: bcopy.c,v 1.10 2014/04/14 18:18:58 joerg Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -89,8 +89,7 @@ bcopy(const void *src0, void *dst0, size
 	unsigned long u;
 
 #if !defined(_KERNEL)
-	_DIAGASSERT(dst0 != 0);
-	_DIAGASSERT(src0 != 0);
+	_DIAGASSERT((dst0 && src0) || length == 0);
 #endif
 
 	if (length == 0 || dst == src)		/* nothing to do */

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