From owner-freebsd-bugs@FreeBSD.ORG  Wed Oct 18 12:40:23 2006
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
X-Original-To: freebsd-bugs@FreeBSD.ORG
Delivered-To: freebsd-bugs@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 7AA4016A407;
	Wed, 18 Oct 2006 12:40:23 +0000 (UTC)
	(envelope-from ache@nagual.pp.ru)
Received: from nagual.pp.ru (nagual.pp.ru [194.87.13.69])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 9CBE943D46;
	Wed, 18 Oct 2006 12:40:19 +0000 (GMT)
	(envelope-from ache@nagual.pp.ru)
Received: from nagual.pp.ru (ache@localhost [127.0.0.1])
	by nagual.pp.ru (8.13.8/8.13.8) with ESMTP id k9ICeI5i054601;
	Wed, 18 Oct 2006 16:40:18 +0400 (MSD)
	(envelope-from ache@nagual.pp.ru)
Received: (from ache@localhost)
	by nagual.pp.ru (8.13.8/8.13.8/Submit) id k9ICeIY5054600;
	Wed, 18 Oct 2006 16:40:18 +0400 (MSD) (envelope-from ache)
Date: Wed, 18 Oct 2006 16:40:18 +0400
From: Andrey Chernov <ache@FreeBSD.ORG>
To: Ruslan Ermilov <ru@FreeBSD.ORG>
Message-ID: <20061018124018.GA54280@nagual.pp.ru>
Mail-Followup-To: Andrey Chernov <ache@freebsd.org>,
	Ruslan Ermilov <ru@FreeBSD.ORG>, freebsd-bugs@FreeBSD.ORG
References: <200610111730.k9BHUMH4085536@freefall.freebsd.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200610111730.k9BHUMH4085536@freefall.freebsd.org>
User-Agent: Mutt/1.5.13 (2006-08-11)
Cc: freebsd-bugs@FreeBSD.ORG
Subject: Re: bin/104295: freopen(NULL, ...) does bad things to file offset.
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
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: Wed, 18 Oct 2006 12:40:23 -0000

On Wed, Oct 11, 2006 at 05:30:22PM +0000, Ruslan Ermilov wrote:
>  I don't know the stdio code very well, but I tracked it down to
>  optimizations in _fseeko(); basically, freopen() calls

The problem revealed is more complex. See my final fix in v1.17. All those 
bugs was introduced in v1.11 (tjr) attempting to implement file == NULL 
POSIX handling, brokenness affects even normal file != NULL case when 
append (no seek). I write re@ asking for MFC aprovement, but not hear 
anything yet.

-- 
http://ache.pp.ru/