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#16163: 24.3.50; segfault at xdisp.c 20044 -- (can not reproduce) Date: Mon, 16 Dec 2013 19:01:50 +0200 Message-ID: <8361qoenlt.fsf@gnu.org> References: <87ob4gkg65.fsf@yahoo.fr> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1387213339 22412 80.91.229.3 (16 Dec 2013 17:02:19 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 16 Dec 2013 17:02:19 +0000 (UTC) Cc: 16163@debbugs.gnu.org To: Nicolas Richard Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Dec 16 18:02:23 2013 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 1VsbYi-00081z-Ra for geb-bug-gnu-emacs@m.gmane.org; Mon, 16 Dec 2013 18:02:20 +0100 Original-Received: from localhost ([::1]:57248 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VsbYi-000209-86 for geb-bug-gnu-emacs@m.gmane.org; Mon, 16 Dec 2013 12:02:20 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:43270) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VsbYY-0001qx-Ea for bug-gnu-emacs@gnu.org; Mon, 16 Dec 2013 12:02:16 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VsbYS-0002KV-4J for bug-gnu-emacs@gnu.org; Mon, 16 Dec 2013 12:02:10 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:40175) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VsbYR-0002KJ-W2 for bug-gnu-emacs@gnu.org; Mon, 16 Dec 2013 12:02:04 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1VsbYR-000506-Oy for bug-gnu-emacs@gnu.org; Mon, 16 Dec 2013 12:02:03 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 16 Dec 2013 17:02:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 16163 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 16163-submit@debbugs.gnu.org id=B16163.138721330819173 (code B ref 16163); Mon, 16 Dec 2013 17:02:03 +0000 Original-Received: (at 16163) by debbugs.gnu.org; 16 Dec 2013 17:01:48 +0000 Original-Received: from localhost ([127.0.0.1]:54190 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VsbYC-0004zB-4J for submit@debbugs.gnu.org; Mon, 16 Dec 2013 12:01:48 -0500 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:57447) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VsbY9-0004yy-Kh for 16163@debbugs.gnu.org; Mon, 16 Dec 2013 12:01:46 -0500 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0MXW00L00SIF6J00@a-mtaout20.012.net.il> for 16163@debbugs.gnu.org; Mon, 16 Dec 2013 19:01:41 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MXW00KAASMSSKC0@a-mtaout20.012.net.il>; Mon, 16 Dec 2013 19:01:41 +0200 (IST) In-reply-to: <87ob4gkg65.fsf@yahoo.fr> 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:82073 Archived-At: > From: Nicolas Richard > Date: Mon, 16 Dec 2013 15:45:54 +0100 > > I'm on trunk, and I had just pressed keys to run magit-status when this > happened. Unfortunately my terminal window had a limit on the size of > its history, so I lost the beginning of the gdb session. To avoid such a loss, turn on logging inside GDB: (gdb) set logging on Then everything GDB outputs will be echoed to a file named gdb.txt by default. > In the source at xdisp.c:20044 the code is : > row->glyphs[TEXT_AREA]->charpos = CHARPOS (it->position); > > (gdb) bt > #0 0x0809019e in display_line (it=0xbfff9898) at xdisp.c:20044 > #1 0x0809779f in try_window (window=165787789, pos=..., flags=1) at xdisp.c:16505 Not much to go by here, unfortunately. You didn't even tell which part of the above segfaulted: was it row->glyphs, row->glyphs[TEXT_AREA]->charpos, or it->position? Otherwise, what I see as a routine redisplay cycle. In addition, this seems to be an optimized build, so backtraces are unreliable. Please try reproducing this in an unoptimized build. Thanks.