From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.bugs Subject: bug#29066: 26.0.90; crash in gc involving buffer local symbols Date: Tue, 31 Oct 2017 22:03:26 +0100 Message-ID: <87375zxc69.fsf@linux-m68k.org> References: <83a808tlqp.fsf@gnu.org> <838tfst27n.fsf@gnu.org> <87efpjzv2p.fsf@linux-m68k.org> <834lqfta80.fsf@gnu.org> <877evbxe1e.fsf@linux-m68k.org> <83r2tjrr92.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1509483864 14415 195.159.176.226 (31 Oct 2017 21:04:24 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 31 Oct 2017 21:04:24 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) Cc: 29066@debbugs.gnu.org, vgatien-baron@janestreet.com, mshinwell@janestreet.com To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Oct 31 22:04:20 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e9dhi-0002ku-QV for geb-bug-gnu-emacs@m.gmane.org; Tue, 31 Oct 2017 22:04:10 +0100 Original-Received: from localhost ([::1]:47389 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e9dhq-0000ot-3j for geb-bug-gnu-emacs@m.gmane.org; Tue, 31 Oct 2017 17:04:18 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36718) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e9dhd-0000od-9O for bug-gnu-emacs@gnu.org; Tue, 31 Oct 2017 17:04:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e9dha-0000YX-54 for bug-gnu-emacs@gnu.org; Tue, 31 Oct 2017 17:04:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:35989) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1e9dha-0000Y4-1w for bug-gnu-emacs@gnu.org; Tue, 31 Oct 2017 17:04:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1e9dhZ-000710-Mb for bug-gnu-emacs@gnu.org; Tue, 31 Oct 2017 17:04:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andreas Schwab Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 31 Oct 2017 21:04:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 29066 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 29066-submit@debbugs.gnu.org id=B29066.150948381126925 (code B ref 29066); Tue, 31 Oct 2017 21:04:01 +0000 Original-Received: (at 29066) by debbugs.gnu.org; 31 Oct 2017 21:03:31 +0000 Original-Received: from localhost ([127.0.0.1]:44670 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e9dh5-00070C-Au for submit@debbugs.gnu.org; Tue, 31 Oct 2017 17:03:31 -0400 Original-Received: from mail-out.m-online.net ([212.18.0.9]:54713) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e9dh3-000704-BW for 29066@debbugs.gnu.org; Tue, 31 Oct 2017 17:03:30 -0400 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 3yRP2m0DHmz1qs03; Tue, 31 Oct 2017 22:03:27 +0100 (CET) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 3yRP2l6dTvz1tSmd; Tue, 31 Oct 2017 22:03:27 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id 1AwWZM4emtDU; Tue, 31 Oct 2017 22:03:27 +0100 (CET) X-Auth-Info: kt5s7YgrvYME+viUfFfY5meJPgOt+u6z6ROlI20D6ubL7461F003LgafW2wdWOPp Original-Received: from localhost (ppp-188-174-147-245.dynamic.mnet-online.de [188.174.147.245]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Tue, 31 Oct 2017 22:03:27 +0100 (CET) Original-Received: by localhost (Postfix, from userid 1000) id 9154E2C224F; Tue, 31 Oct 2017 22:03:26 +0100 (CET) X-Yow: The FALAFEL SANDWICH lands on my HEAD and I become a VEGETARIAN... In-Reply-To: <83r2tjrr92.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 31 Oct 2017 22:34:17 +0200") 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: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:139289 Archived-At: On Okt 31 2017, Eli Zaretskii wrote: >> From: Andreas Schwab >> Cc: vgatien-baron@janestreet.com, 29066@debbugs.gnu.org, mshinwell@janestreet.com >> Date: Tue, 31 Oct 2017 21:23:09 +0100 >> >> On Okt 31 2017, Eli Zaretskii wrote: >> >> > It isn't freed, it's on the symbol_free_list. >> >> A symbol on the symbol_free_list is a freed symbol, not available for >> use. > > I guess you are saying that sweep_symbols has a bug? Because it hits > this "freed" symbol every GC, AFAICT. Since GC is special, it needs to do special things. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."