From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.bugs Subject: bug#11144: bootstrap w/gcc-4.8.0 + nonzero MALLOC_PERTURB_ -> ./temacs segfault Date: Tue, 10 Apr 2012 09:36:53 -0700 Organization: UCLA Computer Science Department Message-ID: <4F8461A5.6020809@cs.ucla.edu> References: <87pqbre1gq.fsf@rho.meyering.net> <87zkas232w.fsf@rho.meyering.net> <87hawslzkm.fsf@rho.meyering.net> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1334075891 9722 80.91.229.3 (10 Apr 2012 16:38:11 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 10 Apr 2012 16:38:11 +0000 (UTC) Cc: 11144@debbugs.gnu.org To: Jim Meyering Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Apr 10 18:38:09 2012 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 1SHe52-00082P-Sd for geb-bug-gnu-emacs@m.gmane.org; Tue, 10 Apr 2012 18:38:09 +0200 Original-Received: from localhost ([::1]:44287 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SHe52-0004To-52 for geb-bug-gnu-emacs@m.gmane.org; Tue, 10 Apr 2012 12:38:08 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:41713) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SHe50-0004S7-0r for bug-gnu-emacs@gnu.org; Tue, 10 Apr 2012 12:38:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SHe4v-0007S6-Cr for bug-gnu-emacs@gnu.org; Tue, 10 Apr 2012 12:38:05 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:52508) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SHe4v-0007S1-A6 for bug-gnu-emacs@gnu.org; Tue, 10 Apr 2012 12:38:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1SHe5v-0004sZ-0p for bug-gnu-emacs@gnu.org; Tue, 10 Apr 2012 12:39:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Paul Eggert Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 10 Apr 2012 16:39:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 11144 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 11144-submit@debbugs.gnu.org id=B11144.133407589118665 (code B ref 11144); Tue, 10 Apr 2012 16:39:02 +0000 Original-Received: (at 11144) by debbugs.gnu.org; 10 Apr 2012 16:38:11 +0000 Original-Received: from localhost ([127.0.0.1]:49046 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1SHe54-0004qs-Mj for submit@debbugs.gnu.org; Tue, 10 Apr 2012 12:38:11 -0400 Original-Received: from smtp.cs.ucla.edu ([131.179.128.62]:39026) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1SHe51-0004qF-Nc for 11144@debbugs.gnu.org; Tue, 10 Apr 2012 12:38:08 -0400 Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp.cs.ucla.edu (Postfix) with ESMTP id 89DBAA60001; Tue, 10 Apr 2012 09:37:04 -0700 (PDT) X-Virus-Scanned: amavisd-new at smtp.cs.ucla.edu Original-Received: from smtp.cs.ucla.edu ([127.0.0.1]) by localhost (smtp.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Gf+8Eezzx2TA; Tue, 10 Apr 2012 09:37:04 -0700 (PDT) Original-Received: from penguin.cs.ucla.edu (Penguin.CS.UCLA.EDU [131.179.64.200]) by smtp.cs.ucla.edu (Postfix) with ESMTPSA id 2BDE539E800C; Tue, 10 Apr 2012 09:37:04 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120329 Thunderbird/11.0.1 In-Reply-To: <87hawslzkm.fsf@rho.meyering.net> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) 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:58702 Archived-At: On 04/10/2012 02:13 AM, Jim Meyering wrote: > This has struck again, now using gcc version 4.8.0 20120406 > I've reopened the bug. This is in an area of Emacs code that is sensitive to minor details in how the C compiler works, and it's quite possible that the bug is in Emacs, not in GCC. Certainly I've seen similar tracebacks which came from Emacs bugs. If you're bisecting, you might want to look at Emacs trunk bzr 107789, which I committed three days ago, and which affects this part of the code. I don't offhand see why it would cause the problem (though perhaps it might *fix* the problem :-).