From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#39962: 27.0.90; Crash in Emacs 27.0.90 Date: Wed, 11 Mar 2020 21:34:26 +0200 Message-ID: <834kuuadod.fsf@gnu.org> References: <24162.58107.725366.668639@cochabamba.vanoostrum.org> <329e58b1-6255-311e-bdd8-b6f5b3d5208f@cs.ucla.edu> <22225b66-44f6-d132-3036-92181d53c28d@cs.ucla.edu> <89A83582-358F-43DC-B96E-04EE9D655D5F@vanoostrum.org> <63b88e2d-9888-f3ce-a4b0-fcf344e803e5@cs.ucla.edu> <83d09lbgk5.fsf@gnu.org> <837dzqaieq.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="85921"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 39962@debbugs.gnu.org, pieter-l@vanoostrum.org, eggert@cs.ucla.edu To: Pip Cet Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Mar 11 20:35:16 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 1jC78N-000MC4-S6 for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 11 Mar 2020 20:35:15 +0100 Original-Received: from localhost ([::1]:57482 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jC78M-0005BC-1K for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 11 Mar 2020 15:35:14 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:33003) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jC78B-0005As-15 for bug-gnu-emacs@gnu.org; Wed, 11 Mar 2020 15:35:03 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jC78A-00006c-0t for bug-gnu-emacs@gnu.org; Wed, 11 Mar 2020 15:35:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:49584) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jC789-00006K-Tg for bug-gnu-emacs@gnu.org; Wed, 11 Mar 2020 15:35:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jC789-000884-RH for bug-gnu-emacs@gnu.org; Wed, 11 Mar 2020 15:35:01 -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, 11 Mar 2020 19:35:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 39962 X-GNU-PR-Package: emacs Original-Received: via spool by 39962-submit@debbugs.gnu.org id=B39962.158395527731207 (code B ref 39962); Wed, 11 Mar 2020 19:35:01 +0000 Original-Received: (at 39962) by debbugs.gnu.org; 11 Mar 2020 19:34:37 +0000 Original-Received: from localhost ([127.0.0.1]:55557 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jC77k-00087G-RN for submit@debbugs.gnu.org; Wed, 11 Mar 2020 15:34:37 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:46020) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jC77i-000873-6a for 39962@debbugs.gnu.org; Wed, 11 Mar 2020 15:34:34 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:38448) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1jC77c-0007yq-1U; Wed, 11 Mar 2020 15:34:28 -0400 Original-Received: from [176.228.60.248] (port=4159 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jC77a-0003JW-KD; Wed, 11 Mar 2020 15:34:27 -0400 In-Reply-To: (message from Pip Cet on Wed, 11 Mar 2020 18:53:55 +0000) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:177198 Archived-At: > From: Pip Cet > Date: Wed, 11 Mar 2020 18:53:55 +0000 > Cc: pieter-l@vanoostrum.org, 39962@debbugs.gnu.org, eggert@cs.ucla.edu > > > Did you audit all the users of this function, both direct and > > indirect? Some of them are outside of GC. > > Thanks for the comment; I just re-checked, and they look fine to me. ??? Fine in what way? One of the callers is live_buffer_p, which is called by valid_lisp_object_p, which is expected to return a special value for dead buffers. Your change will break that, no? IOW, you are changing the semantics of "live buffer", for a reason that can hardly justify that. That doesn't sound economical to me; it will certainly make it much harder for me to agree to make the change on the release branch. The problem you are trying to solve is rare and obscure, since this code was with us since 20 years ago without anyone bumping into it, so changing it to solve such a rare problem, and on the release branch on top of that, doesn't sound right to me. Am I missing something?