From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#45156: 28.0.50; Segfault due to glyph_row being set to NULL Date: Thu, 10 Dec 2020 15:54:55 +0200 Message-ID: <83tust4vgw.fsf@gnu.org> References: <87v9daaycw.fsf@physik.rwth-aachen.de> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3909"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 45156@debbugs.gnu.org To: Torsten Bronger Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Dec 10 15:18:40 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1knMmG-0000uD-Aa for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 10 Dec 2020 15:18:40 +0100 Original-Received: from localhost ([::1]:49746 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1knMmF-000886-Bc for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 10 Dec 2020 09:18:39 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53730) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1knMQM-0002zj-MB for bug-gnu-emacs@gnu.org; Thu, 10 Dec 2020 08:56:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:53957) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1knMQM-0005Kd-D2 for bug-gnu-emacs@gnu.org; Thu, 10 Dec 2020 08:56:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1knMQM-0004c2-CO for bug-gnu-emacs@gnu.org; Thu, 10 Dec 2020 08:56:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 10 Dec 2020 13:56:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 45156 X-GNU-PR-Package: emacs Original-Received: via spool by 45156-submit@debbugs.gnu.org id=B45156.160760852517681 (code B ref 45156); Thu, 10 Dec 2020 13:56:02 +0000 Original-Received: (at 45156) by debbugs.gnu.org; 10 Dec 2020 13:55:25 +0000 Original-Received: from localhost ([127.0.0.1]:37270 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1knMPk-0004b6-RE for submit@debbugs.gnu.org; Thu, 10 Dec 2020 08:55:25 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:60392) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1knMPj-0004ap-GX for 45156@debbugs.gnu.org; Thu, 10 Dec 2020 08:55:24 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:40908) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1knMPd-0004xR-7R; Thu, 10 Dec 2020 08:55:17 -0500 Original-Received: from [176.228.60.248] (port=1160 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1knMPb-00066r-5O; Thu, 10 Dec 2020 08:55:16 -0500 In-Reply-To: <87v9daaycw.fsf@physik.rwth-aachen.de> (message from Torsten Bronger on Thu, 10 Dec 2020 08:55:59 +0100) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:195650 Archived-At: > From: Torsten Bronger > Date: Thu, 10 Dec 2020 08:55:59 +0100 > > I see Emacs segfaulting when moving the cursor upwards in a LaTeX > document while tex-fold-mode is active. The starting position of the > cursor is important. > > I placed all files to reproduce the bug at > . The TeX file needs > to be put in /tmp. tex-fold-mode must be present. Furthermore, place > .emacs and .emacs.desktop in the proper positions, start current Git > Emacs, and press the "cursor up" button. Then, Emacs crashes for me. > > The subject of this bug is just to give it a name. I do not know > whether glyph_row is the issue. However, I bisected the problem, and it > started with commit f425a774, which sets glyph_row to NULL in two > places. If I revert this commit, the problem is gone. Ouch! what a terrible blunder! Sorry about that; I see the problem and am working on a solution.