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#24417: 25.1; Emacs crashes during gc Date: Thu, 29 Sep 2016 18:47:28 +0300 Message-ID: <8337kioghb.fsf@gnu.org> References: <8737l5kgem.fsf@asha.i-did-not-set--mail-host-address--so-tickle-me> <83h99l9i78.fsf@gnu.org> <83twdl7yd1.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1475165081 6242 195.159.176.226 (29 Sep 2016 16:04:41 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 29 Sep 2016 16:04:41 +0000 (UTC) Cc: 24417@debbugs.gnu.org To: sudarshan@acm.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Sep 29 18:04:35 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 1bpdov-00082O-5p for geb-bug-gnu-emacs@m.gmane.org; Thu, 29 Sep 2016 18:04:25 +0200 Original-Received: from localhost ([::1]:38959 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bpdot-0001ET-Kq for geb-bug-gnu-emacs@m.gmane.org; Thu, 29 Sep 2016 12:04:23 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:50209) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bpdZ8-0003QO-Dd for bug-gnu-emacs@gnu.org; Thu, 29 Sep 2016 11:48:10 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bpdZ4-0008BW-6U for bug-gnu-emacs@gnu.org; Thu, 29 Sep 2016 11:48:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:60985) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bpdZ4-0008BN-2o for bug-gnu-emacs@gnu.org; Thu, 29 Sep 2016 11:48:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bpdZ3-00070l-TP for bug-gnu-emacs@gnu.org; Thu, 29 Sep 2016 11:48:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 29 Sep 2016 15:48:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 24417 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 24417-submit@debbugs.gnu.org id=B24417.147516405826900 (code B ref 24417); Thu, 29 Sep 2016 15:48:01 +0000 Original-Received: (at 24417) by debbugs.gnu.org; 29 Sep 2016 15:47:38 +0000 Original-Received: from localhost ([127.0.0.1]:38942 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bpdYf-0006zn-VN for submit@debbugs.gnu.org; Thu, 29 Sep 2016 11:47:38 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:59082) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bpdYd-0006zL-QL for 24417@debbugs.gnu.org; Thu, 29 Sep 2016 11:47:36 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bpdYV-0007jH-JH for 24417@debbugs.gnu.org; Thu, 29 Sep 2016 11:47:30 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:49806) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bpdYV-0007iJ-G8; Thu, 29 Sep 2016 11:47:27 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:1976 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bpdYT-00042f-KB; Thu, 29 Sep 2016 11:47:26 -0400 In-reply-to: (message from Sudarshan Gaikaiwari on Wed, 28 Sep 2016 19:50:42 -0500) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:123765 Archived-At: > From: Sudarshan Gaikaiwari > Date: Wed, 28 Sep 2016 19:50:42 -0500 > Cc: 24417@debbugs.gnu.org > > y emacs process crashed again. I was running a debug build as part of > bug#24417. The back trace indicates that the sefault is in a different > module. Please let me know if I should file a new bug instead of > updating this one. > I was trying to run rgrep when this crash occured. The emacs build is > of RC2 and not > the latest release. This crash looks differently, but I'm not yet sure if it's a separate problem, so let's keep them together for now. Is this debugging session still alive? If so, I'd like to ask you to report values of some relevant variables. What seems to have happened here is that Emacs was going to report an error by starting the Lisp debugger. Then, while redrawing the display triggered by that, some font-lock construct caused the display engine to call a Lisp function, which eventually called re-search-forward, and that segfaulted because it got an invalid string pointer. It would be good to know what was the error Emacs wanted to report, and what function was invoked from redisplay that caused the crash.