From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#49261: 28.0.50; File Locking Breaks Presumptuous Toolchains Date: Sat, 10 Jul 2021 20:20:20 +0300 Message-ID: <83tul2axwr.fsf@gnu.org> References: <837di9lwbm.fsf@gnu.org> <87a6n5vuu4.fsf@gnus.org> <8735sqnmei.fsf@gnus.org> <87zguyf4ht.fsf@gmx.de> <87pmvum54p.fsf@gnus.org> <87v95mf2lj.fsf@gmx.de> <87pmvt3ob1.fsf@gnus.org> <83r1g9evoy.fsf@gnu.org> <83pmvtevgg.fsf@gnu.org> <87czrt3mj4.fsf@gnus.org> <878s2h3m1d.fsf@gnus.org> <874kd53lnl.fsf@gnus.org> <87zgux26ab.fsf@gnus.org> <83k0m1e3dg.fsf@gnu.org> <875yxlugcb.fsf@gnus.org> <8335spdjy5.fsf@gnu.org> <878s2hszcx.fsf@gnus.org> <83y2agda7l.fsf@gnu.org> <87a6mup24o.fsf@gnus.org> <83wnpyaymk.fsf@gnu.org> <87v95im6nq.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="5836"; mail-complaints-to="usenet@ciao.gmane.io" Cc: eggert@cs.ucla.edu, michael.albinus@gmx.de, 49261@debbugs.gnu.org, ncaprisunfan@gmail.com, monnier@iro.umontreal.ca To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Jul 10 19:21:10 2021 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 1m2Gf7-0001Hi-Ub for geb-bug-gnu-emacs@m.gmane-mx.org; 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Sat, 10 Jul 2021 17:21:02 +0000 Original-Received: (at 49261) by debbugs.gnu.org; 10 Jul 2021 17:20:43 +0000 Original-Received: from localhost ([127.0.0.1]:33400 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1m2Ged-000700-Mv for submit@debbugs.gnu.org; Sat, 10 Jul 2021 13:20:43 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:44900) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1m2Gec-0006zo-D5 for 49261@debbugs.gnu.org; Sat, 10 Jul 2021 13:20:39 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:40708) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m2GeU-0006bq-V2; Sat, 10 Jul 2021 13:20:30 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:3010 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m2GeU-00071i-JI; Sat, 10 Jul 2021 13:20:30 -0400 In-Reply-To: <87v95im6nq.fsf@gnus.org> (message from Lars Ingebrigtsen on Sat, 10 Jul 2021 19:15:53 +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:209764 Archived-At: > From: Lars Ingebrigtsen > Cc: Stefan Monnier , michael.albinus@gmx.de, > ncaprisunfan@gmail.com, 49261@debbugs.gnu.org, Paul Eggert > > Date: Sat, 10 Jul 2021 19:15:53 +0200 > > >> 731 return lisp_h_XLP (o); > >> (gdb) bt > >> #0 0x00005555556f0549 in AREF (idx=6988131860, array=XIL(0x7ffff1bd901d)) > >> at lisp.h:731 > >> #1 HASH_KEY (idx=3494065930, h=0x7ffff1bd8f98) at lisp.h:2374 > >> #2 hash_lookup > >> (h=0x7ffff1bd8f98, key=XIL(0x555555c76c64), hash=hash@entry=0x0) > >> at fns.c:4479 > > Well, the segfault is in this: > > for (i = HASH_INDEX (h, start_of_bucket); 0 <= i; i = HASH_NEXT (h, i)) > { > > and you can see that idx (i.e., i here) is 3494065930, which is a very > unusual value for idx -- it's usually below 2K. So it can't really be > anything other than a memory corruption issue, I think? Yes, but why? and in which hash-table?