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#53348: 27.2; Crash in mark_object Date: Fri, 21 Jan 2022 11:34:25 +0100 Message-ID: <87h79xtm1a.fsf@gnus.org> References: <7867C7DB-C88C-4DC8-9315-8C987DFB9DFA@sap.com> <83bl09ugsf.fsf@gnu.org> <83a6ftue6w.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3091"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 53348@debbugs.gnu.org, "Reingruber, Richard" To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jan 21 11:35:16 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 1nArGE-0000cz-P6 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 21 Jan 2022 11:35:14 +0100 Original-Received: from localhost ([::1]:49192 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nArGD-00012P-Sn for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 21 Jan 2022 05:35:13 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:52894) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nArG2-00010E-Cq for bug-gnu-emacs@gnu.org; Fri, 21 Jan 2022 05:35:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:39150) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nArG1-0001H7-UY for bug-gnu-emacs@gnu.org; Fri, 21 Jan 2022 05:35:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nArG1-0007lj-NQ for bug-gnu-emacs@gnu.org; Fri, 21 Jan 2022 05:35:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 21 Jan 2022 10:35:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 53348 X-GNU-PR-Package: emacs Original-Received: via spool by 53348-submit@debbugs.gnu.org id=B53348.164276127829822 (code B ref 53348); Fri, 21 Jan 2022 10:35:01 +0000 Original-Received: (at 53348) by debbugs.gnu.org; 21 Jan 2022 10:34:38 +0000 Original-Received: from localhost ([127.0.0.1]:60286 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nArFe-0007kw-He for submit@debbugs.gnu.org; Fri, 21 Jan 2022 05:34:38 -0500 Original-Received: from quimby.gnus.org ([95.216.78.240]:32908) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nArFa-0007ki-Uf for 53348@debbugs.gnu.org; Fri, 21 Jan 2022 05:34:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: 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=Y74TKm1K8KGl+bo9Um8NKLeC02I6QGVRtb7HIRDUdVc=; b=O9ntNqaxizvg0Z4DmXnc0DWAas KeQZY8fRyg1Kc4qo05l3S3uBLfBZ7LleSs6dLzy5UusP5liV2nwc3KUc41qW+S5e7p9ZTmn7jyHRS EqzzNDxdMrUgdYLHZbGNbQyuATpMd3IIQa/sDX2jsp8SH/NjjHVfjFbuUOLD7PODSWiQ=; Original-Received: from [84.212.220.105] (helo=giant) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nArFS-0000gS-5p; Fri, 21 Jan 2022 11:34:28 +0100 X-Now-Playing: Nosdam's _Rayon_: "Colours-Heavy Load" In-Reply-To: <83a6ftue6w.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 18 Jan 2022 19:49:27 +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:224743 Archived-At: Eli Zaretskii writes: > Yes, GC is very recursive, although it shouldn't cause stack overflow > with "usual" data structure. No, a long list shouldn't cause such > deep recursion, but a deeply-recursive list or some other recursive > data structure could, if the depth is unusually large. In particular, the gc is recursive on the `car' of cons cells. The following trivial code should segfault Emacs (so don't evaluate it): (let ((foo (cons 1 1))) (dotimes (i 1000000) (setcar foo (cons 1 1)) (setq foo (car foo)))) (garbage-collect) -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no