From owner-freebsd-bugs@FreeBSD.ORG  Fri Jan 15 22:30:03 2010
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id E2325106566C
	for <freebsd-bugs@hub.freebsd.org>;
	Fri, 15 Jan 2010 22:30:03 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id D0F438FC0A
	for <freebsd-bugs@hub.freebsd.org>;
	Fri, 15 Jan 2010 22:30:03 +0000 (UTC)
Received: from freefall.freebsd.org (localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id o0FMU3RU071145
	for <freebsd-bugs@freefall.freebsd.org>; Fri, 15 Jan 2010 22:30:03 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.3/8.14.3/Submit) id o0FMU3KY071140;
	Fri, 15 Jan 2010 22:30:03 GMT (envelope-from gnats)
Date: Fri, 15 Jan 2010 22:30:03 GMT
Message-Id: <201001152230.o0FMU3KY071140@freefall.freebsd.org>
To: freebsd-bugs@FreeBSD.org
From: Maxim Zakharov <maxime@maxime.net.ru>
Cc: 
Subject: Re: kern/141682: [libc] [patch] Faster version of strncpy(3)
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Maxim Zakharov <maxime@maxime.net.ru>
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 15 Jan 2010 22:30:04 -0000

The following reply was made to PR kern/141682; it has been noted by GNATS.

From: Maxim Zakharov <maxime@maxime.net.ru>
To: Jaakko Heinonen <jh@freebsd.org>
Cc: bug-followup@freebsd.org
Subject: Re: kern/141682: [libc] [patch] Faster version of strncpy(3)
Date: Sat, 16 Jan 2010 01:26:03 +0300

 Hi,
 
     if (length) {
       register size_t n = length / 8;
       register size_t r = (length % 8);
       register char *dst = dst0, *src = src0;
       if (r == 0) r = 8; else n++;
 
 this solves the problem.
 
 Thank you.
 
 On 1/15/10, Jaakko Heinonen <jh@freebsd.org> wrote:
 >
 > Hi,
 >
 > On 2009-12-17, Maxim Zakharov wrote:
 >>  void * dps_strncpy(char *dst0, char *src0, size_t length) {
 >>    if (length) {
 >>      register size_t n = (length + 7) / 8;
 >
 > This won't work with length values larger than SIZE_MAX - 7 due to
 > integer overflow.
 >
 > --
 > Jaakko
 >
 
 
 -- 
 http://www.dataparksearch.org/