From owner-freebsd-current@FreeBSD.ORG  Tue Dec  4 00:49:47 2007
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 134A316A417;
	Tue,  4 Dec 2007 00:49:47 +0000 (UTC) (envelope-from rizzo@icir.org)
Received: from xorpc.icir.org (xorpc.icir.org [192.150.187.68])
	by mx1.freebsd.org (Postfix) with ESMTP id E447E13C4E9;
	Tue,  4 Dec 2007 00:49:46 +0000 (UTC) (envelope-from rizzo@icir.org)
Received: from xorpc.icir.org (localhost [127.0.0.1])
	by xorpc.icir.org (8.12.11/8.13.6) with ESMTP id lB40SBbi041609;
	Mon, 3 Dec 2007 16:28:11 -0800 (PST)
	(envelope-from rizzo@xorpc.icir.org)
Received: (from rizzo@localhost)
	by xorpc.icir.org (8.12.11/8.12.3/Submit) id lB40SB6G041608;
	Mon, 3 Dec 2007 16:28:11 -0800 (PST) (envelope-from rizzo)
Date: Mon, 3 Dec 2007 16:28:11 -0800
From: Luigi Rizzo <rizzo@icir.org>
To: "Wojciech A. Koszek" <wkoszek@FreeBSD.org>, freebsd-current@FreeBSD.org,
	daichi@FreeBSD.org, csjp@FreeBSD.org, jeffr@FreeBSD.org
Message-ID: <20071203162811.A40075@xorpc.icir.org>
References: <20071204000413.GA64160@FreeBSD.czest.pl>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5.1i
In-Reply-To: <20071204000413.GA64160@FreeBSD.czest.pl>;
	from wkoszek@freebsd.org on Tue, Dec 04, 2007 at 12:04:13AM +0000
Cc: 
Subject: Re: [PATCHES] Building newest src/ tree with gcc3 fails.
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
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: Tue, 04 Dec 2007 00:49:47 -0000

On Tue, Dec 04, 2007 at 12:04:13AM +0000, Wojciech A. Koszek wrote:
> Hello all,
> 
> I had to rebuild my two disks, each with pre-gcc 4.x era. There seem to
> be a number of small bugs which gcc4 doesn't uncover while gcc3 does.
> Thus, several problems you can encounter with WITH_GCC3 on newest src/ tree:

i cannot tell about the 'function body not available' but some
'uninitialized' errors only come out because the compiler is not
smart enough in the analysis of execution paths. Sometimes this also
depends on the -O level used in compilation.
So technically they are not bugs in the code, though of course it
is a good idea to rewrite the source to be compatible with dumber
compilers.


cheers
luigi