From owner-svn-src-head@FreeBSD.ORG  Sat Jan  5 22:04:40 2013
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id DC938925;
 Sat,  5 Jan 2013 22:04:40 +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 CDC7E843;
 Sat,  5 Jan 2013 22:04:40 +0000 (UTC)
Received: from svn.freebsd.org (svn.FreeBSD.org [8.8.178.70])
 by svn.freebsd.org (8.14.5/8.14.5) with ESMTP id r05M4en0080199;
 Sat, 5 Jan 2013 22:04:40 GMT (envelope-from markj@svn.freebsd.org)
Received: (from markj@localhost)
 by svn.freebsd.org (8.14.5/8.14.5/Submit) id r05M4euk080198;
 Sat, 5 Jan 2013 22:04:40 GMT (envelope-from markj@svn.freebsd.org)
Message-Id: <201301052204.r05M4euk080198@svn.freebsd.org>
From: Mark Johnston <markj@FreeBSD.org>
Date: Sat, 5 Jan 2013 22:04:40 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r245075 - 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-head@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 05 Jan 2013 22:04:40 -0000

Author: markj
Date: Sat Jan  5 22:04:40 2013
New Revision: 245075
URL: http://svnweb.freebsd.org/changeset/base/245075

Log:
  Fix a segfault when bsdgrep -i is given an empty pattern string.
  
  PR:		bin/172865
  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	Sat Jan  5 21:52:38 2013	(r245074)
+++ head/usr.bin/grep/regex/tre-fastmatch.c	Sat Jan  5 22:04:40 2013	(r245075)
@@ -468,7 +468,7 @@ static int	fastcmp(const fastmatch_t *fg
   fg->nosub = (cflags & REG_NOSUB);					\
 									\
   /* Cannot handle REG_ICASE with MB string */				\
-  if (fg->icase && (TRE_MB_CUR_MAX > 1))				\
+  if (fg->icase && (TRE_MB_CUR_MAX > 1) && n > 0)			\
     {									\
       DPRINT(("Cannot use fast matcher for MBS with REG_ICASE\n"));	\
       return REG_BADPAT;						\