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From: "Andrey A. Chernov" <ache@FreeBSD.org>
Date: Wed, 31 Aug 2016 18:49:50 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r305144 - head/lib/libc/net
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Author: ache
Date: Wed Aug 31 18:49:50 2016
New Revision: 305144
URL: https://svnweb.freebsd.org/changeset/base/305144

Log:
  'addrlen' does not matter when we need to find the first non-zero bit in
  the byte from the left and 'addrlen' already counted in 'lim'.
  
  PR:     212121
  Submitted by:   Herbie.Robinson@stratus.com
  MFC after:      7 days

Modified:
  head/lib/libc/net/getaddrinfo.c
  head/lib/libc/net/name6.c

Modified: head/lib/libc/net/getaddrinfo.c
==============================================================================
--- head/lib/libc/net/getaddrinfo.c	Wed Aug 31 18:37:51 2016	(r305143)
+++ head/lib/libc/net/getaddrinfo.c	Wed Aug 31 18:49:50 2016	(r305144)
@@ -949,7 +949,7 @@ matchlen(struct sockaddr *src, struct so
 
 	while (s < lim)
 		if ((r = (*d++ ^ *s++)) != 0) {
-			while (r < addrlen * 8) {
+			while ((r & 0x80) == 0) {
 				match++;
 				r <<= 1;
 			}

Modified: head/lib/libc/net/name6.c
==============================================================================
--- head/lib/libc/net/name6.c	Wed Aug 31 18:37:51 2016	(r305143)
+++ head/lib/libc/net/name6.c	Wed Aug 31 18:49:50 2016	(r305144)
@@ -930,7 +930,7 @@ matchlen(struct sockaddr *src, struct so
 
 	while (s < lim)
 		if ((r = (*d++ ^ *s++)) != 0) {
-			while (r < addrlen * 8) {
+			while ((r & 0x80) == 0) {
 				match++;
 				r <<= 1;
 			}