From owner-svn-src-all@freebsd.org  Wed Apr  5 20:11:06 2017
Return-Path: <owner-svn-src-all@freebsd.org>
Delivered-To: svn-src-all@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id C26FED2FD44;
 Wed,  5 Apr 2017 20:11:06 +0000 (UTC)
 (envelope-from emaste@FreeBSD.org)
Received: from repo.freebsd.org (repo.freebsd.org
 [IPv6:2610:1c1:1:6068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 92F1DD5E;
 Wed,  5 Apr 2017 20:11:06 +0000 (UTC)
 (envelope-from emaste@FreeBSD.org)
Received: from repo.freebsd.org ([127.0.1.37])
 by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v35KB57Q047286;
 Wed, 5 Apr 2017 20:11:05 GMT (envelope-from emaste@FreeBSD.org)
Received: (from emaste@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id v35KB55U047285;
 Wed, 5 Apr 2017 20:11:05 GMT (envelope-from emaste@FreeBSD.org)
Message-Id: <201704052011.v35KB55U047285@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: emaste set sender to
 emaste@FreeBSD.org using -f
From: Ed Maste <emaste@FreeBSD.org>
Date: Wed, 5 Apr 2017 20:11:05 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r316542 - head/usr.bin/grep
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: 2.1.23
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: <https://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: <https://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 05 Apr 2017 20:11:06 -0000

Author: emaste
Date: Wed Apr  5 20:11:05 2017
New Revision: 316542
URL: https://svnweb.freebsd.org/changeset/base/316542

Log:
  bsdgrep: Handle special case of single-byte NUL pattern
  
  PR:		202022
  Submitted by:	Kyle Evans <kevans91 at ksu.edu>
  MFC after:	1 month
  Differential Revision:	https://reviews.freebsd.org/D10102

Modified:
  head/usr.bin/grep/grep.c

Modified: head/usr.bin/grep/grep.c
==============================================================================
--- head/usr.bin/grep/grep.c	Wed Apr  5 19:52:49 2017	(r316541)
+++ head/usr.bin/grep/grep.c	Wed Apr  5 20:11:05 2017	(r316542)
@@ -314,8 +314,12 @@ read_patterns(const char *fn)
 	}
 	len = 0;
 	line = NULL;
-	while ((rlen = getline(&line, &len, f)) != -1)
+	while ((rlen = getline(&line, &len, f)) != -1) {
+		if (line[0] == '\0')
+			continue;
 		add_pattern(line, line[0] == '\n' ? 0 : (size_t)rlen);
+	}
+
 	free(line);
 	if (ferror(f))
 		err(2, "%s", fn);