From clamav-users-bounces@lists.clamav.net Mon Dec 17 19:03:47 2007 Return-Path: X-Original-To: list@tad.clamav.net Delivered-To: list@tad.clamav.net X-Virus-Scanned: Debian amavisd-new at tad.clamav.net Received: from tad.clamav.net ([127.0.0.1]) by localhost (tad.clamav.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zXv369EEPbja; Mon, 17 Dec 2007 19:03:47 +0100 (CET) Received: from tad.clamav.net (localhost.localdomain [127.0.0.1]) by tad.clamav.net (Postfix) with ESMTP id 4A2C416C016; Mon, 17 Dec 2007 19:03:36 +0100 (CET) X-Original-To: clamav-users@tad.clamav.net Delivered-To: clamav-users@tad.clamav.net X-Virus-Scanned: Debian amavisd-new at tad.clamav.net Received: from tad.clamav.net ([127.0.0.1]) by localhost (tad.clamav.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8+lMZEqXC34L for ; Mon, 17 Dec 2007 19:03:32 +0100 (CET) Received: from fk-out-0910.google.com (fk-out-0910.google.com [209.85.128.185]) by tad.clamav.net (Postfix) with ESMTP id 46D7916C00A for ; Mon, 17 Dec 2007 19:03:32 +0100 (CET) Received: by fk-out-0910.google.com with SMTP id 26so1728623fkx.8 for ; Mon, 17 Dec 2007 10:03:32 -0800 (PST) Received: by 10.82.107.15 with SMTP id f15mr817000buc.0.1197914611646; Mon, 17 Dec 2007 10:03:31 -0800 (PST) Received: from ?192.168.0.2? ( [86.125.52.42]) by mx.google.com with ESMTPS id c25sm16027186ika.2007.12.17.10.03.29 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 17 Dec 2007 10:03:30 -0800 (PST) Message-ID: <4766B9E6.6020003@gmail.com> Date: Mon, 17 Dec 2007 20:03:18 +0200 From: =?ISO-8859-1?Q?T=F6r=F6k_Edwin?= User-Agent: Mozilla-Thunderbird 2.0.0.6 (X11/20071008) MIME-Version: 1.0 To: ClamAV users ML References: <837a8ad10712170847q7876287eta936f45c686572b8@mail.gmail.com> In-Reply-To: <837a8ad10712170847q7876287eta936f45c686572b8@mail.gmail.com> Subject: Re: [Clamav-users] help, can't compile clamav-0.92 ("gcc bug") X-BeenThere: clamav-users@lists.clamav.net X-Mailman-Version: 2.1.9 Precedence: list Reply-To: ClamAV users ML List-Id: ClamAV users ML List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: clamav-users-bounces@lists.clamav.net Errors-To: clamav-users-bounces@lists.clamav.net exo dia wrote: > Hi! > > We are using Ubuntu 6.06 LTS (Dapper Drake) on x86 boxes, and 6.06 uses gcc > 4.0.3...and as such, we cannot compile the new clamav-0.92: > > checking for a supported version of gcc... ok (4.0.3) > checking for gcc bug PR27603... ok, bug not present > checking for gcc bug PR28045... configure: error: your compiler has gcc > PR28045 bug, use a different compiler, see > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28045 > > How do you "use a different compiler"? gcc 4.0.3 is what 6.06 LTS > provides...I don't know how to change this (??). > If you can't upgrade to a newer gcc, you can also use an older gcc that doesn't have this bug: Ubuntu 6.06 LTS provides gcc-3.4: http://packages.ubuntu.com/dapper/devel/gcc-3.4 # apt-get install gcc-3.4 > If I were to disable compiler optimizations in the clamav build, could I > work around this bug in gcc 4.0.3? Which clamav file(s) have a problem with > this bug? > See clamav bug #613: https://wwws.clamav.net/bugzilla/show_bug.cgi?id=613 The source code does specific bounds checks that this compiler incorrectly removes. If you compile ClamAV with a compiler that fails either of the 3 gcc bug tests in configure, the resulting binary may be subject to a buffer-overflow. Best regards, --Edwin _______________________________________________ Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net http://lurker.clamav.net/list/clamav-users.html