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#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects Date: Wed, 27 May 2020 20:33:14 +0300 Message-ID: <83r1v5s2p1.fsf@gnu.org> References: <83zha8cgpi.fsf@gnu.org> <83r1vibmyj.fsf@gnu.org> <83imgublku.fsf@gnu.org> <831rncjuwf.fsf@gnu.org> <83h7w5xvfa.fsf@gnu.org> <83y2phwb9x.fsf@gnu.org> <83r1v9w9vi.fsf@gnu.org> <83mu5xw50d.fsf@gnu.org> <83k110wxte.fsf@gnu.org> <4bab5f55-95fe-cf34-e490-1d4319728395@cs.ucla.edu> <837dwyvi74.fsf@gnu.org> <1484f569-c260-9fb0-bfe1-67897de289d3@cs.ucla.edu> <83blm9tn4j.fsf@gnu.org> <4aeb8963-4fd1-fcd4-e6e1-be409ab54775@cs.ucla.edu> Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="17787"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 41321@debbugs.gnu.org, monnier@iro.umontreal.ca, pipcet@gmail.com To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed May 27 19:34:12 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 1jdzwQ-0004Ry-OK for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 27 May 2020 19:34:10 +0200 Original-Received: from localhost ([::1]:59260 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jdzwP-0006Zp-LF for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 27 May 2020 13:34:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39168) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jdzwI-0006Zd-Bm for bug-gnu-emacs@gnu.org; Wed, 27 May 2020 13:34:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:38372) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jdzwI-0007mS-2E for bug-gnu-emacs@gnu.org; Wed, 27 May 2020 13:34:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jdzwI-00006G-00 for bug-gnu-emacs@gnu.org; Wed, 27 May 2020 13:34:02 -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, 27 May 2020 17:34:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41321 X-GNU-PR-Package: emacs Original-Received: via spool by 41321-submit@debbugs.gnu.org id=B41321.1590600816352 (code B ref 41321); Wed, 27 May 2020 17:34:01 +0000 Original-Received: (at 41321) by debbugs.gnu.org; 27 May 2020 17:33:36 +0000 Original-Received: from localhost ([127.0.0.1]:49918 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jdzvs-00005c-GH for submit@debbugs.gnu.org; Wed, 27 May 2020 13:33:36 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:59900) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jdzvq-00005O-MU for 41321@debbugs.gnu.org; Wed, 27 May 2020 13:33:35 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:41219) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jdzvj-0007eO-Ja; Wed, 27 May 2020 13:33:27 -0400 Original-Received: from [176.228.60.248] (port=3094 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jdzvi-0004qQ-V3; Wed, 27 May 2020 13:33:27 -0400 In-Reply-To: <4aeb8963-4fd1-fcd4-e6e1-be409ab54775@cs.ucla.edu> (message from Paul Eggert on Wed, 27 May 2020 09:58:11 -0700) 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:181096 Archived-At: > Cc: pipcet@gmail.com, 41321@debbugs.gnu.org, monnier@iro.umontreal.ca > From: Paul Eggert > Date: Wed, 27 May 2020 09:58:11 -0700 > > In looking into this more, it appears that the maybe_lisp_pointer idea is wrong, > in that compilers can make pointers into a Lisp object while losing the address > of the original object (and we've seen them do this) and there's no guarantee > that these sub-pointers are GCALIGNED. Sorry, I don't follow: what do you mean by "losing the address of the original object" in this case? Can you show an example?