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#47244: 28.0.50; SIGSEGV in long-runnning Emacs Date: Wed, 31 Mar 2021 10:09:15 +0300 Message-ID: <83pmzfiyuc.fsf@gnu.org> References: <87im5ofp3z.fsf@md5i.com> <14e14f28-7ece-cd98-5e49-d4583a0153a0@gmx.at> <16b279ef-a1c2-cd41-b18c-69383174c72a@gmx.at> <87a6qs7z60.fsf@md5i.com> <83eeg3kawg.fsf@gnu.org> <83y2e6kp9t.fsf@gnu.org> <83tuouknpb.fsf@gnu.org> <83sg4eknh5.fsf@gnu.org> <83r1jykmt0.fsf@gnu.org> <2d0dbdc8-3678-cd21-234a-9c63bb004629@gmx.at> <83h7ksk89q.fsf@gnu.org> <9f6993e1-642b-75f9-1820-f7521d047943@gmx.at> <83ft0ck73a.fsf@gnu.org> <2820acc4-291d-d4a8-73aa-bea9ba2bbff7@gmx.at> <835z18k1w6.fsf@gnu.org> <28b5da95-90f2-a1d8-a2da-3e817bbb77f8@gmx.at> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="12329"; mail-complaints-to="usenet@ciao.gmane.io" Cc: mwd@md5i.com, schwab@linux-m68k.org, 47244@debbugs.gnu.org, mwd@cert.org To: martin rudalics Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Mar 31 09:10:20 2021 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 1lRUzc-00036R-4z for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 31 Mar 2021 09:10:20 +0200 Original-Received: from localhost ([::1]:51080 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRUza-0006sU-Pg for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 31 Mar 2021 03:10:18 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45120) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRUzK-0006sL-VQ for bug-gnu-emacs@gnu.org; Wed, 31 Mar 2021 03:10:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:41831) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lRUzK-0002YP-OG for bug-gnu-emacs@gnu.org; Wed, 31 Mar 2021 03:10:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lRUzK-00081v-Ik for bug-gnu-emacs@gnu.org; Wed, 31 Mar 2021 03:10:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 31 Mar 2021 07:10:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 47244 X-GNU-PR-Package: emacs Original-Received: via spool by 47244-submit@debbugs.gnu.org id=B47244.161717455830798 (code B ref 47244); Wed, 31 Mar 2021 07:10:02 +0000 Original-Received: (at 47244) by debbugs.gnu.org; 31 Mar 2021 07:09:18 +0000 Original-Received: from localhost ([127.0.0.1]:53377 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lRUyX-00080Z-VI for submit@debbugs.gnu.org; Wed, 31 Mar 2021 03:09:18 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:51944) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lRUyU-00080J-5b for 47244@debbugs.gnu.org; Wed, 31 Mar 2021 03:09:12 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:55286) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRUyK-0001vw-NN; Wed, 31 Mar 2021 03:09:00 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:3031 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1lRUyK-0002Ag-3k; Wed, 31 Mar 2021 03:09:00 -0400 In-Reply-To: <28b5da95-90f2-a1d8-a2da-3e817bbb77f8@gmx.at> (message from martin rudalics on Wed, 31 Mar 2021 08:41:52 +0200) 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:203332 Archived-At: > Cc: mwd@cert.org, mwd@md5i.com, schwab@linux-m68k.org, 47244@debbugs.gnu.org > From: martin rudalics > Date: Wed, 31 Mar 2021 08:41:52 +0200 > > > IME, there's any number of "real problems" out there, and the hope to > > find them all is ... too optimistic. > > I'd be already happy to find just the one we talk about here. > > > There's nothing wrong with being > > defensive against unknown factors. > > Agreed. What I meant was that if, as we suppose, the mischief happens > at time T1 somewhere in redisplay and is detected (by chance) and > corrected at time T2 in the main loop, any side effects that mischief > causes between T1 and T2 still go undetected and may cause arbitrary > harm. I think it's the other way around: we set the dead buffer as the current one in the main loop, and then redisplay tries to redisplay that window. > In either case whatever you want to do here - set the selected window's > buffer or just the current buffer in the main loop - would not interfere > with finding the real culprit. So I certainly won't object to your fix. I will wait for a few days in the hope that the culprit is found.