From owner-freebsd-current@FreeBSD.ORG  Sun Jul 13 12:56:44 2003
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 4334537B401
	for <freebsd-current@freebsd.org>;
	Sun, 13 Jul 2003 12:56:44 -0700 (PDT)
Received: from falcon.midgard.homeip.net (h76n3fls20o913.bredband.comhem.se
	[213.67.148.76])	by mx1.FreeBSD.org (Postfix) with SMTP id 9367543F75
	for <freebsd-current@freebsd.org>;
	Sun, 13 Jul 2003 12:56:42 -0700 (PDT)
	(envelope-from ertr1013@student.uu.se)
Received: (qmail 17803 invoked by uid 1001); 13 Jul 2003 19:56:41 -0000
Date: Sun, 13 Jul 2003 21:56:41 +0200
From: Erik Trulsson <ertr1013@student.uu.se>
To: "M. Warner Losh" <imp@bsdimp.com>
Message-ID: <20030713195640.GA17783@falcon.midgard.homeip.net>
Mail-Followup-To: "M. Warner Losh" <imp@bsdimp.com>, leimy2k@mac.com,
	freebsd-current@freebsd.org
References: <1046B4F9-B561-11D7-BE3B-0003937E39E0@mac.com>
	<20030713190720.GA17305@falcon.midgard.homeip.net>
	<340CBBD2-B568-11D7-BE3B-0003937E39E0@mac.com>
	<20030713.134838.39218842.imp@bsdimp.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20030713.134838.39218842.imp@bsdimp.com>
User-Agent: Mutt/1.5.4i
cc: freebsd-current@freebsd.org
Subject: Re: GCC 3.3.1, new warnings with <limits>
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 13 Jul 2003 19:56:44 -0000

On Sun, Jul 13, 2003 at 01:48:38PM -0600, M. Warner Losh wrote:
> In message: <340CBBD2-B568-11D7-BE3B-0003937E39E0@mac.com>
>             David Leimbach <leimy2k@mac.com> writes:
> : So for the one way conversion of signed to unsigned it will behave like 
> : 2's compliment
> : all the time. What about back to signed?
> 
> Same way.
> 
> It will be reduced by the maximum value of the range plus one to do
> the conversion.

No, this case is implementation-defined if the value cannot be
represented by the signed type it is converted to.
(If it can be represented then the value will be preserved.)

> 
> See section for 6.3.1.3 for the details.

Yes, please do.

> 
> That's why I said 'as if' in my other mail.

-- 
<Insert your favourite quote here.>
Erik Trulsson
ertr1013@student.uu.se