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: Tue, 30 Mar 2021 17:48:01 +0300 Message-ID: <83h7ksk89q.fsf@gnu.org> References: <87im5ofp3z.fsf@md5i.com> <83czvvdw7o.fsf@gnu.org> <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> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16685"; 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 Tue Mar 30 16:53:23 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 1lRFkA-0004Bk-Lx for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 30 Mar 2021 16:53:22 +0200 Original-Received: from localhost ([::1]:38330 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRFk9-0004kM-AI for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 30 Mar 2021 10:53:21 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:42318) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRFfy-0008Et-Ho for bug-gnu-emacs@gnu.org; Tue, 30 Mar 2021 10:49:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:41026) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lRFfy-0002Qg-6s for bug-gnu-emacs@gnu.org; Tue, 30 Mar 2021 10:49:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lRFfy-0003wv-3g for bug-gnu-emacs@gnu.org; Tue, 30 Mar 2021 10:49:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 30 Mar 2021 14:49:02 +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=B47244.161711568915093 (code B ref 47244); Tue, 30 Mar 2021 14:49:02 +0000 Original-Received: (at 47244) by debbugs.gnu.org; 30 Mar 2021 14:48:09 +0000 Original-Received: from localhost ([127.0.0.1]:52570 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lRFf6-0003vK-Eu for submit@debbugs.gnu.org; Tue, 30 Mar 2021 10:48:09 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:49086) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lRFf1-0003un-TI for 47244@debbugs.gnu.org; Tue, 30 Mar 2021 10:48:07 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:38589) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRFep-0001t4-Ua; Tue, 30 Mar 2021 10:47:53 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:2049 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1lRFen-000250-Ui; Tue, 30 Mar 2021 10:47:51 -0400 In-Reply-To: (message from martin rudalics on Tue, 30 Mar 2021 16:36:50 +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:203307 Archived-At: > Cc: Eli Zaretskii , "mwd@md5i.com" , > "schwab@linux-m68k.org" , > "47244@debbugs.gnu.org" <47244@debbugs.gnu.org> > From: martin rudalics > Date: Tue, 30 Mar 2021 16:36:50 +0200 > > > The breakpoint I put on the error() clause added to buffer.c triggered > > again in the new build without touching any of the easserts. > > And I thought I was overdoing with them. This error is a bit too elusive > for my brain. Maybe instead of trying to find the exact culprit, we should simply protect this code: /* Make sure the current window's buffer is selected. */ set_buffer_internal (XBUFFER (XWINDOW (selected_window)->contents)); from selecting a dead buffer? For example, by using other_buffer_safely if the selected-window's buffer is dead. After all the code in question, viz.: (gnus-kill-buffer (current-buffer)) is already quite crazy: who in their right mind kills the current buffer in the middle of a Lisp program? What were they thinking?