From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Stefan Kangas Newsgroups: gmane.emacs.bugs Subject: bug#35557: 26.1; false positive: Match data clobbered by buffer modification hooks Date: Thu, 16 Jan 2020 15:23:57 +0100 Message-ID: <87wo9rwkci.fsf@marxist.se> References: <64899525-fd17-c715-dff4-b99996717f4f@cs.ucla.edu> <878sozt7m5.fsf@marxist.se> <87sgm2m8er.fsf@tethera.net> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="68575"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 35557@debbugs.gnu.org, Paul Eggert To: David Bremner Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jan 16 15:25:23 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 1is65I-000HcL-TI for geb-bug-gnu-emacs@m.gmane-mx.org; 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Thu, 16 Jan 2020 09:23:59 -0500 In-Reply-To: <87sgm2m8er.fsf@tethera.net> (David Bremner's message of "Mon, 02 Dec 2019 22:48:12 -0400") X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - ted.gofardesign.uk X-AntiAbuse: Original Domain - debbugs.gnu.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - marxist.se X-Get-Message-Sender-Via: ted.gofardesign.uk: authenticated_id: stefan@marxist.se X-Authenticated-Sender: ted.gofardesign.uk: stefan@marxist.se 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: 209.51.188.43 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:174714 Archived-At: David Bremner writes: > Stefan Kangas writes: > >> Paul Eggert writes: >> >>> I tried to reproduce the bug and failed, so I'm afraid you'll have to step in >>> and help debug it. First, please use 26.2 rather than 26.1. Second, please >>> simplify the ./configure arguments (there are some duplicates, and >>> --enable-libsystemd isn't the right name for the flag). Third, I suggest running >>> it under GDB and seeing what exactly goes wrong, e.g., by putting a watchpoint >>> on search_regs.start[sub]. >> >> I couldn't reproduce this bug either. >> >> David, could you please look into the above suggestions by Paul? > > FYI I've filed Debian bug 931651 about this. I did duplicate the problem > without docker, and with emacs 26.3, but on an s390x system (and it > seems to be sensitive to _which_ s390x system, so that is a bit > discouraging). > > I haven't had time to follow up Paul's suggestions. Thank you. As it seems to be specific to certain s390x machines, I think we will be dependent on your help to track this down. When you find the time, it would be very good if you could try the things suggested by Paul above. Thanks in advance. Best regards, Stefan Kangas