From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Ivan Shmakov Newsgroups: gmane.emacs.bugs Subject: bug#18438: 24.4.50; assertion failed in bidi.c Date: Mon, 20 Oct 2014 19:35:01 +0000 Message-ID: <87siiir0uy.fsf@violet.siamics.net> References: <4745242cd3e424a6c4d5db0e8d3e33d0@amuri.net> <83h9zrlzc8.fsf@gnu.org> <54297FDB.6090606@cornell.edu> <837g0mmkf3.fsf@gnu.org> <6b19fab333f3d362ae61b30b299d7206@amuri.net> <83iok5ku74.fsf@gnu.org> <88ccbe34bf58322ae4b2a5657390c041@amuri.net> <83ppe1itu9.fsf@gnu.org> <837g08bdcy.fsf@gnu.org> <1c93d571dbd64d473e8c53ba59063425@amuri.net> <83k3416hlf.fsf@gnu.org> <02fd9e39e5724b113eb47ecef0408ae5@amuri.net> <83mw8w4gp6.fsf@gnu.org> <543FC3F6.9010101@cornell.edu> <83mw8scedk.fsf@gnu.org> <8fb0816e369e7468b2de862558dbbcbc@amuri.net> <83vbnebv7e.fsf@gnu.org> <83siiibs5y.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1413833795 16783 80.91.229.3 (20 Oct 2014 19:36:35 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 20 Oct 2014 19:36:35 +0000 (UTC) To: 18438@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Oct 20 21:36:30 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XgIko-0005lz-30 for geb-bug-gnu-emacs@m.gmane.org; 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Mon, 20 Oct 2014 19:36:01 +0000 Original-Received: (at 18438) by debbugs.gnu.org; 20 Oct 2014 19:35:14 +0000 Original-Received: from localhost ([127.0.0.1]:57495 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XgIja-0004JE-67 for submit@debbugs.gnu.org; Mon, 20 Oct 2014 15:35:14 -0400 Original-Received: from fely.am-1.org ([78.47.74.50]:36867) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XgIjY-0004J6-4e for 18438@debbugs.gnu.org; Mon, 20 Oct 2014 15:35:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=siamics.net; s=a2013295; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:In-Reply-To:Date:Sender:References:Subject:To:From; bh=k7oVpK1RspBDM/XE38Sw+sG05xh5fRDJMNjt6R/v57U=; b=JgUBrt3v6JskRWfzz3QBwccTvDi0kdnXz345feWmlfb0sVdJrXcTP91s2NGNbkeKOeIMhU2VedRrp9uG1xrbhWw0q5dEqE1URDevzmV8jjlG3Vktyr30azEv8rdTNg1D2WOa78tTMPYzfR0FYj+26fTgw4ZZ0mZ467SWMiJgMp4=; Original-Received: from [2a02:2560:6d4:26ca::1:1d] (helo=violet.siamics.net) by fely.am-1.org with esmtps (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1XgIjW-0000F5-Lk for 18438@debbugs.gnu.org; Mon, 20 Oct 2014 19:35:11 +0000 Original-Received: from localhost ([::1] helo=violet.siamics.net) by violet.siamics.net with esmtps (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1XgIjO-00013A-PD for 18438@debbugs.gnu.org; Tue, 21 Oct 2014 02:35:02 +0700 In-Reply-To: <83siiibs5y.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 20 Oct 2014 19:51:53 +0300") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:94838 >>>>> Eli Zaretskii writes: >>>>> From: Eli Zaretskii >> IOW, these all exhibit the same bug, just in different places in the >> Emacs sources. > One possible cause that can explain all of these is that the CPU > flags are reset between the comparison instruction and the following > jump instruction. For example, if the Zero flag is reset, then a > test for a NULL pointer will misbehave. > Can anyone think of a scenario where this could happen? For me, it=E2=80=99s much easier to imagine a misbehaving compiler here. Is there a chance of getting a disassembly at the points of interest? [=E2=80=A6] --=20 FSF associate member #7257 http://boycottsystemd.org/ =E2=80=A6 3013 B6A0= 230E 334A