From owner-svn-src-all@FreeBSD.ORG  Sun Feb 17 19:48:24 2013
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id 83554F19;
 Sun, 17 Feb 2013 19:48:24 +0000 (UTC)
 (envelope-from markj@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 by mx1.freebsd.org (Postfix) with ESMTP id 7581765E;
 Sun, 17 Feb 2013 19:48:24 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.5/8.14.5) with ESMTP id r1HJmOnm051644;
 Sun, 17 Feb 2013 19:48:24 GMT (envelope-from markj@svn.freebsd.org)
Received: (from markj@localhost)
 by svn.freebsd.org (8.14.5/8.14.5/Submit) id r1HJmOJ5051643;
 Sun, 17 Feb 2013 19:48:24 GMT (envelope-from markj@svn.freebsd.org)
Message-Id: <201302171948.r1HJmOJ5051643@svn.freebsd.org>
From: Mark Johnston <markj@FreeBSD.org>
Date: Sun, 17 Feb 2013 19:48:24 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r246917 - head/usr.bin/grep/regex
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 17 Feb 2013 19:48:24 -0000

Author: markj
Date: Sun Feb 17 19:48:23 2013
New Revision: 246917
URL: http://svnweb.freebsd.org/changeset/base/246917

Log:
  Strengthen the check in IS_OUT_OF_BOUNDS to ensure that (j - 1) is a
  valid index into the input buffer.
  
  PR:		bin/175213
  Reviewed by:	gabor
  Approved by:	emaste (co-mentor)
  MFC after:	1 week

Modified:
  head/usr.bin/grep/regex/tre-fastmatch.c

Modified: head/usr.bin/grep/regex/tre-fastmatch.c
==============================================================================
--- head/usr.bin/grep/regex/tre-fastmatch.c	Sun Feb 17 18:42:30 2013	(r246916)
+++ head/usr.bin/grep/regex/tre-fastmatch.c	Sun Feb 17 19:48:23 2013	(r246917)
@@ -103,7 +103,7 @@ static int	fastcmp(const fastmatch_t *fg
   ((!fg->reversed							\
     ? ((type == STR_WIDE) ? ((j + fg->wlen) > len)			\
 			  : ((j + fg->len) > len))			\
-    : (j < 0)))
+    : (j <= 0)))
 
 /*
  * Checks whether the new position after shifting in the input string