From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19350 invoked by alias); 19 Mar 2012 08:53:43 -0000 Received: (qmail 19341 invoked by uid 22791); 19 Mar 2012 08:53:42 -0000 X-SWARE-Spam-Status: No, hits=-1.3 required=5.0 tests=AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from tirion.supremecenter202.com (HELO tirion.supremecenter202.com) (209.25.195.243) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 19 Mar 2012 08:53:19 +0000 Received: from [195.189.206.101] (port=46213 helo=[192.168.209.103]) by tirion.supremecenter202.com with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.69) (envelope-from ) id 1S9YL8-0003Om-Ms; Mon, 19 Mar 2012 08:53:18 +0000 Message-ID: <4F66F3FA.2090404@siva.com.mk> Date: Mon, 19 Mar 2012 08:53:00 -0000 From: Ilija Kocho User-Agent: Mozilla/5.0 (X11; Linux i686; rv:10.0) Gecko/20120130 Thunderbird/10.0 MIME-Version: 1.0 To: =?ISO-8859-1?Q?Lambrecht_J=FCrgen?= CC: eCos Discussion References: <4F660861.8050705@dallaway.org.uk> <4F66EBDB.3010008@televic.com> In-Reply-To: <4F66EBDB.3010008@televic.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-IsSubscribed: yes Mailing-List: contact ecos-discuss-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@ecos.sourceware.org Subject: Re: [ECOS] eCos arm-eabi GNU tools - test release 4.6.3-20120315 X-SW-Source: 2012-03/txt/msg00067.txt.bz2 On 19.03.2012 09:18, Lambrecht Jürgen wrote: > On 03/18/2012 05:08 PM, John Dallaway wrote: >> I have generated a new test release of the GNU tools for ARM targets >> based on GCC 4.6.3. The new test release avoids issues with GCC 4.6.2. >> Ref: >> >> http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001468#c30 >> > I am testing 4.6.2 (AT91SAM9260 platform), and will try 4.6.3 to go on > (ecos 3.0 builds OK, but our application fails). > But when I want to see those "issues with GCC 4.6.2", I get this: > > You are not authorized to access bug #1001468. > > (I can see other bugs.) > Why is this? Maybe something wrong with my account, because when I go to There's nothing wrong with your account. This bug is for use by eCos maintainers. I apologize for inconvenience. Below is a copy of the subject link that explains the reason for our switch to 4.6.3. Ilija The comment: ================ Another serious bug in GCC 4.6.2 I have started playing with Cortex-M4 Floating Point Unit and found out that conversion between float and double doesn't work when hardware floating point is on: -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 For instance: { double dbl; float flo; //..... dbl = flo; // dbl is rubish } It is due to wrong helper library and seem to be the following bug: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51835 I tried GCC 4.6.3 and it seems to work. I'll do some more tests but IMO we should start considering of replacing current 4.6.2-20120125 test release with something newer, possibly 4.6.3. Building of 4.6.3, as noted by Sergei, is quite straight-forward - I just applied the 4.6.2 patches. Of course, until this is resolved nothing can stop us from hunting warnings with current test release. -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss