From owner-svn-src-all@FreeBSD.ORG  Wed Dec 29 19:39:52 2010
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 51CF01065670;
	Wed, 29 Dec 2010 19:39:52 +0000 (UTC)
	(envelope-from jilles@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 411568FC08;
	Wed, 29 Dec 2010 19:39:52 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id oBTJdq0K010794;
	Wed, 29 Dec 2010 19:39:52 GMT (envelope-from jilles@svn.freebsd.org)
Received: (from jilles@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id oBTJdqDG010792;
	Wed, 29 Dec 2010 19:39:52 GMT (envelope-from jilles@svn.freebsd.org)
Message-Id: <201012291939.oBTJdqDG010792@svn.freebsd.org>
From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Wed, 29 Dec 2010 19:39:52 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r216806 - head/bin/sh
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.5
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/listinfo/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: Wed, 29 Dec 2010 19:39:52 -0000

Author: jilles
Date: Wed Dec 29 19:39:51 2010
New Revision: 216806
URL: http://svn.freebsd.org/changeset/base/216806

Log:
  sh: Properly restore exception handler in fc.
  
  If SIGINT arrived at exactly the right moment (unlikely), an exception
  handler in a no longer active stack frame would be called.
  
  Because the old handler was not used in the normal path, clang thought it
  was a dead value and if an exception happened it would longjmp() to garbage.
  This caused builtins/fc1.0 to fail if histedit.c was compiled with clang.
  
  MFC after:	1 week

Modified:
  head/bin/sh/histedit.c

Modified: head/bin/sh/histedit.c
==============================================================================
--- head/bin/sh/histedit.c	Wed Dec 29 18:17:36 2010	(r216805)
+++ head/bin/sh/histedit.c	Wed Dec 29 19:39:51 2010	(r216806)
@@ -232,6 +232,7 @@ histcmd(int argc, char **argv)
 		}
 	argc -= optind, argv += optind;
 
+	savehandler = handler;
 	/*
 	 * If executing...
 	 */
@@ -242,7 +243,6 @@ histcmd(int argc, char **argv)
 		 * Catch interrupts to reset active counter and
 		 * cleanup temp files.
 		 */
-		savehandler = handler;
 		if (setjmp(jmploc.loc)) {
 			active = 0;
 			if (editfile)
@@ -399,6 +399,7 @@ histcmd(int argc, char **argv)
 		--active;
 	if (displayhist)
 		displayhist = 0;
+	handler = savehandler;
 	return 0;
 }