From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#17168: 24.3.50; Segfault at mark_object Date: Sun, 06 Apr 2014 19:19:20 +0300 Message-ID: <834n268m7r.fsf@gnu.org> References: <87y4zop44m.fsf@yahoo.fr> <533C3AF5.6070502@yandex.ru> <533C6905.9060309@dancol.org> <83bnwjbh8v.fsf@gnu.org> <533C75A6.60900@dancol.org> <533D06E6.2060001@yandex.ru> <533D07EF.1040502@yandex.ru> <533D13E2.3060300@dancol.org> <533D251E.3030108@dancol.org> <533D6A19.8050504@yandex.ru> <533D9099.3000104@dancol.org> <533D9F2C.7030500@yandex.ru> <533D9FBB.2050803@dancol.org> <533DB4F0.20706@dancol.org> <534085B1.9070307@dancol.org> <838uri8pkf.fsf@gnu.org> <534179FB.4090301@dancol.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1396801222 8230 80.91.229.3 (6 Apr 2014 16:20:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 6 Apr 2014 16:20:22 +0000 (UTC) Cc: dmantipov@yandex.ru, 17168@debbugs.gnu.org To: Daniel Colascione Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Apr 06 18:20:16 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 1WWpns-0006Xe-5n for geb-bug-gnu-emacs@m.gmane.org; Sun, 06 Apr 2014 18:20:16 +0200 Original-Received: from localhost ([::1]:58641 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WWpnr-00022X-QJ for geb-bug-gnu-emacs@m.gmane.org; Sun, 06 Apr 2014 12:20:15 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56633) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WWpnk-0001sl-Gp for bug-gnu-emacs@gnu.org; Sun, 06 Apr 2014 12:20:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WWpnf-0007be-EP for bug-gnu-emacs@gnu.org; Sun, 06 Apr 2014 12:20:08 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:37061) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WWpnf-0007aR-AD for bug-gnu-emacs@gnu.org; Sun, 06 Apr 2014 12:20:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1WWpne-0003LS-Pa for bug-gnu-emacs@gnu.org; Sun, 06 Apr 2014 12:20:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 06 Apr 2014 16:20:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17168 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 17168-submit@debbugs.gnu.org id=B17168.139680117812815 (code B ref 17168); Sun, 06 Apr 2014 16:20:02 +0000 Original-Received: (at 17168) by debbugs.gnu.org; 6 Apr 2014 16:19:38 +0000 Original-Received: from localhost ([127.0.0.1]:38242 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WWpnF-0003Kd-Qx for submit@debbugs.gnu.org; Sun, 06 Apr 2014 12:19:38 -0400 Original-Received: from mtaout23.012.net.il ([80.179.55.175]:56247) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WWpnC-0003KN-L6 for 17168@debbugs.gnu.org; Sun, 06 Apr 2014 12:19:36 -0400 Original-Received: from conversion-daemon.a-mtaout23.012.net.il by a-mtaout23.012.net.il (HyperSendmail v2007.08) id <0N3M00H00ALD1500@a-mtaout23.012.net.il> for 17168@debbugs.gnu.org; Sun, 06 Apr 2014 19:19:33 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout23.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0N3M00G46AOKVQA0@a-mtaout23.012.net.il>; Sun, 06 Apr 2014 19:19:33 +0300 (IDT) In-reply-to: <534179FB.4090301@dancol.org> X-012-Sender: halo1@inter.net.il 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:87807 Archived-At: > Date: Sun, 06 Apr 2014 08:59:55 -0700 > From: Daniel Colascione > CC: dmantipov@yandex.ru, 17168@debbugs.gnu.org > > > As an alternative, would it make sense to try to understand why the > > problems started when they did? IOW, how come we never saw this until > > now? > > Who knows? The problem arises we happen to form a pointer on the stack > to an undead symbol, and *any* code change could be responsible for our > doing that more frequently. I don't see you can blame it on 114156. Then how do you explain that we never saw such problems, in all the years before? > > In http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15583#23, Richard > > provided the last good revno (113938) and the first bad one (114268); > > I looked at that range of revisions, and 114156 looks relevant. How > > about if we revert it and see if the problems go away? > > The bug would still be there, and we'd have no way to tell whether your > proposed change actually reduced its occurrence to a tolerable level. > Why would you want to do that instead of just fixing the bug? Because it's simpler, and because it just might be that the bug was caused by that other changeset.