From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#46586: 26.3, 27.1.50; Emacs crash in a backtrace (core) dump (a long standing issue) Date: Fri, 17 Jun 2022 17:25:57 +0200 Message-ID: <87wndf5n22.fsf@gnus.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17276"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 46586@debbugs.gnu.org To: =?UTF-8?Q?=E8=B7=AF=E5=AE=A2?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jun 17 17:27:24 2022 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 1o2DsZ-0004Lq-PN for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 17 Jun 2022 17:27:23 +0200 Original-Received: from localhost ([::1]:39246 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o2DsX-0002Ae-Hu for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 17 Jun 2022 11:27:22 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49338) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o2DsE-0002AJ-Oh for bug-gnu-emacs@gnu.org; Fri, 17 Jun 2022 11:27:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:52822) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1o2DsE-0005nR-Fa for bug-gnu-emacs@gnu.org; Fri, 17 Jun 2022 11:27:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1o2DsE-0002gw-5O for bug-gnu-emacs@gnu.org; Fri, 17 Jun 2022 11:27:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 17 Jun 2022 15:27:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 46586 X-GNU-PR-Package: emacs Original-Received: via spool by 46586-submit@debbugs.gnu.org id=B46586.165547956710222 (code B ref 46586); Fri, 17 Jun 2022 15:27:02 +0000 Original-Received: (at 46586) by debbugs.gnu.org; 17 Jun 2022 15:26:07 +0000 Original-Received: from localhost ([127.0.0.1]:46716 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o2DrL-0002eo-Fh for submit@debbugs.gnu.org; Fri, 17 Jun 2022 11:26:07 -0400 Original-Received: from quimby.gnus.org ([95.216.78.240]:57204) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o2DrK-0002eD-Dl for 46586@debbugs.gnu.org; Fri, 17 Jun 2022 11:26:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID :In-Reply-To:Date:References:Subject:Cc:To:From:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=aitjig9rCgoEOxuuQxvQxjxJDyiHyufRY1ksMqoFycI=; b=G0OxTzK4DpIvQZA4MpsAIXbUSM IV8RImTNodCDqa+jbZejh9T760Ye2S8DnM49iqplastJq24A5NxQINrYTSfx4+uirwRHD0uGRNq7q vGHFGDm8saZDNnyxknLPUIqW326xWxCTUrTAtEn3X0KOzo+aUWT3oZEQ0q+kG68w4OOg=; Original-Received: from [84.212.220.105] (helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1o2DrC-0004Rv-3n; Fri, 17 Jun 2022 17:26:00 +0200 X-Now-Playing: The Notwist's _Vertigo Days_: "Into Love-Stars" In-Reply-To: ("=?UTF-8?Q?=E8=B7=AF=E5=AE=A2?="'s message of "Wed, 17 Feb 2021 18:13:56 +0800") 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:234704 Archived-At: =E8=B7=AF=E5=AE=A2 writes: > I found a short data clip can always crash Emacs 26.3 or 27.1.50 with > a terminal backtrace (core) dump in the "read()" function. It took me > a few hours to narrow it down and finally reach this minimal crashing > data set: > > ----- code begin ----- > (#1=3D(#("000008964 .gnus.el" 0 18 (r #1#)) > (def #2=3D#("000008964 .gnus.el" 0 18 > (r > (#2# > (def #3=3D#("000006393 .gnus.el" 0 18 > (r #4=3D(#3# > (def > #("000006393 .gnus.el" 0 18 (r #4#)) "x"))))"x"))))"x"))) > ----- code end ----- > > Try to `read' or `eval' this block of code (C-x C-e) will immediately > crash Emacs 26.3 or 27.1.50; however, older Emacs 26.0.50 works well > by entering the debugger with an error like: (I'm going through old bug reports that unfortunately weren't resolved at the time.) I can reproduce this problem in Emacs 28.1, but not in Emacs 29 -- the reader/printer/gc was recently rewritten to handle recursive structures better, so I'm closing this bug report. --=20 (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no