From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1RzfDh-000891-Bx for garchives@archives.gentoo.org; Tue, 21 Feb 2012 02:12:45 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 0C266E0FFF; Tue, 21 Feb 2012 02:12:34 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by pigeon.gentoo.org (Postfix) with ESMTP id 672F0E0FDE for ; Tue, 21 Feb 2012 02:11:58 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id EF9CE1B400D for ; Tue, 21 Feb 2012 02:11:57 +0000 (UTC) X-Virus-Scanned: by amavisd-new using ClamAV at gentoo.org X-Spam-Flag: NO X-Spam-Score: -3.29 X-Spam-Level: X-Spam-Status: No, score=-3.29 tagged_above=-999 required=5.5 tests=[AWL=-1.378, BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=no Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OTS-Qey1S4Bw for ; Tue, 21 Feb 2012 02:11:52 +0000 (UTC) Received: from plane.gmane.org (plane.gmane.org [80.91.229.3]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.gentoo.org (Postfix) with ESMTPS id 5FAEB1B4001 for ; Tue, 21 Feb 2012 02:11:52 +0000 (UTC) Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1RzfCk-00053K-Td for gentoo-dev@gentoo.org; Tue, 21 Feb 2012 03:11:46 +0100 Received: from 71-17-69-121.yktn.hsdb.sasknet.sk.ca ([71.17.69.121]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 21 Feb 2012 03:11:46 +0100 Received: from dirtyepic by 71-17-69-121.yktn.hsdb.sasknet.sk.ca with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 21 Feb 2012 03:11:46 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-dev@lists.gentoo.org From: Ryan Hill Subject: [gentoo-dev] Re: About gcc-4.6 unmasking Date: Mon, 20 Feb 2012 20:19:42 -0600 Message-ID: <20120220201942.5ea80782@gentoo.org> References: <1329770054.21166.12.camel@belkin4> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/iXRPl3P5cL2TMAOkdZfbJ_C"; protocol="application/pgp-signature" X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 71-17-69-121.yktn.hsdb.sasknet.sk.ca X-Newsreader: Claws Mail 3.8.0 (GTK+ 2.24.10; x86_64-pc-linux-gnu) X-Archives-Salt: ce631252-da21-481a-8d5e-b715ef256349 X-Archives-Hash: 9bb86f87c0b0b2048e005509c069f9f4 --Sig_/iXRPl3P5cL2TMAOkdZfbJ_C Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Mon, 20 Feb 2012 20:37:39 -0500 Richard Yao wrote: > Ryan, >=20 > I took a look at the problem cited in your bug report. I suggest > compiling sys-boot/grub with CFLAGS=3D"-O0 -ggdb3", attaching gdb to > grub-install and then watching what happens in the debugger. If you > compare runs with a GCC 4.5.3 built stage2 and a GCC 4.6.2 built > stage2, you should be able to find the bug. Sorry, the bug report is confusing. It's actually two bugs, the first being a miscompiled stage2 causing an error when running grub-install and making the system unbootable. I fixed that back in Sept. The second bug is a continuous boot loop that only seems to manifest on certain machines or configurations. This is the one I'm having trouble with. I should have opened a new report for it, but at the time I thought it was due to fallout from the first patch. The biggest problem is that I can't reproduce it on either of my systems, so I have no way of narrowing it down. FWIW, I did a comparison of /boot/grub= /* from a broken system and my own and they are byte-for-byte identical. --=20 fonts, gcc-porting toolchain, wxwidgets @ gentoo.org --Sig_/iXRPl3P5cL2TMAOkdZfbJ_C Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iEYEARECAAYFAk9C/z4ACgkQiqiDRvmkBmJcKACgi82VL9ZnCduaJK/le34h7FG6 WdkAoPCKXju188Zix8geVYC+norAvR6Z =fRaC -----END PGP SIGNATURE----- --Sig_/iXRPl3P5cL2TMAOkdZfbJ_C--