From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#24764: 25.1.50; Another crash in automatic gc Date: Sat, 22 Oct 2016 17:24:44 +0300 Message-ID: <8337joqx5f.fsf@gnu.org> References: <87vawkk9l1.fsf@web.de> <83d1isr94u.fsf@gnu.org> <87oa2c4hgf.fsf@web.de> <87eg384gni.fsf@web.de> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1477146378 4721 195.159.176.226 (22 Oct 2016 14:26:18 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 22 Oct 2016 14:26:18 +0000 (UTC) Cc: 24764@debbugs.gnu.org To: Michael Heerdegen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Oct 22 16:26:14 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bxxFT-0000NV-CG for geb-bug-gnu-emacs@m.gmane.org; Sat, 22 Oct 2016 16:26:11 +0200 Original-Received: from localhost ([::1]:37443 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bxxFV-0000V4-Ic for geb-bug-gnu-emacs@m.gmane.org; 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Sat, 22 Oct 2016 14:26:01 +0000 Original-Received: (at submit) by debbugs.gnu.org; 22 Oct 2016 14:25:05 +0000 Original-Received: from localhost ([127.0.0.1]:46456 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bxxEP-0007Pa-7f for submit@debbugs.gnu.org; Sat, 22 Oct 2016 10:25:05 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:34644) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bxxEO-0007P3-CM for submit@debbugs.gnu.org; Sat, 22 Oct 2016 10:25:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bxxEI-0004eh-JJ for submit@debbugs.gnu.org; Sat, 22 Oct 2016 10:24:59 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:46365) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1bxxEI-0004eY-Fv for submit@debbugs.gnu.org; Sat, 22 Oct 2016 10:24:58 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:53830) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bxxEH-0000NS-GK for bug-gnu-emacs@gnu.org; Sat, 22 Oct 2016 10:24:58 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bxxEC-0004c7-KM for bug-gnu-emacs@gnu.org; Sat, 22 Oct 2016 10:24:57 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:50048) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bxxEC-0004c3-Gw; Sat, 22 Oct 2016 10:24:52 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:1745 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bxxEB-0001UD-Kd; Sat, 22 Oct 2016 10:24:52 -0400 In-reply-to: <87eg384gni.fsf@web.de> (message from Michael Heerdegen on Sat, 22 Oct 2016 16:12:01 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:124830 Archived-At: > From: Michael Heerdegen > Cc: bug-gnu-emacs@gnu.org > Date: Sat, 22 Oct 2016 16:12:01 +0200 > > Michael Heerdegen writes: > > > That's one commit above emacs-25's current HEAD: the WIP commit for > > making sort-line accepting a predicate arg. I can revert it just to > > be sure. But I'm not even convinced that the stuff I suspect is > > really the culprit. > > FWIW, I already tried to compile (make bootstrap) with different > versions of gcc (I downgraded all that stuff in Debian from testing to > stable), and I checked out the emacs-25 branch from different points - > but the crashs happened with every build. Good to know. Let's start with figuring out whether each crash shows the buffer's marker chain overwritten by the same (or similar) text string. In the session you have now, try this command, in frame #0: (gdb) p (char *)&b->markers What does this print? If it doesn't print any human-readable text, try this: (gdb) p (char *)tail