From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#10913: 24.0.94; Crash in redisplay code Date: Thu, 01 Mar 2012 06:04:28 +0200 Message-ID: <838vjlc6gj.fsf@gnu.org> References: <83boohy5xo.fsf@kalahari.s2.org> <83fwdtcwuo.fsf@gnu.org> <25ECBDF6-A273-4D79-8DC6-4B34002790E9@swipnet.se> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE X-Trace: dough.gmane.org 1330574659 10460 80.91.229.3 (1 Mar 2012 04:04:19 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 1 Mar 2012 04:04:19 +0000 (UTC) Cc: azure@iki.fi, 10913@debbugs.gnu.org To: Jan =?UTF-8?Q?Dj=C3=A4rv?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Mar 01 05:04:18 2012 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1S2xFZ-000219-F8 for geb-bug-gnu-emacs@m.gmane.org; Thu, 01 Mar 2012 05:04:17 +0100 Original-Received: from localhost ([::1]:55715 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S2xFY-00068V-S0 for geb-bug-gnu-emacs@m.gmane.org; Wed, 29 Feb 2012 23:04:16 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:35063) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S2xFV-00068C-Er for bug-gnu-emacs@gnu.org; Wed, 29 Feb 2012 23:04:14 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1S2xFS-00058q-K3 for bug-gnu-emacs@gnu.org; Wed, 29 Feb 2012 23:04:13 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:49742) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S2xFS-00058S-GV for bug-gnu-emacs@gnu.org; Wed, 29 Feb 2012 23:04:10 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1S2xFK-0003oX-0c for bug-gnu-emacs@gnu.org; Wed, 29 Feb 2012 23:04:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 01 Mar 2012 04:04:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 10913 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 10913-submit@debbugs.gnu.org id=B10913.133057460014610 (code B ref 10913); Thu, 01 Mar 2012 04:04:01 +0000 Original-Received: (at 10913) by debbugs.gnu.org; 1 Mar 2012 04:03:20 +0000 Original-Received: from localhost ([127.0.0.1]:56574 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1S2xEU-0003n0-AG for submit@debbugs.gnu.org; Wed, 29 Feb 2012 23:03:19 -0500 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:46954) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1S2xE7-0003mS-3E for 10913@debbugs.gnu.org; Wed, 29 Feb 2012 23:02:58 -0500 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0M0600G00TTIS400@a-mtaout22.012.net.il> for 10913@debbugs.gnu.org; Thu, 01 Mar 2012 06:02:20 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([77.124.119.92]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0M0600FG2TVV1YN0@a-mtaout22.012.net.il>; Thu, 01 Mar 2012 06:02:20 +0200 (IST) In-reply-to: <25ECBDF6-A273-4D79-8DC6-4B34002790E9@swipnet.se> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:57410 Archived-At: > From: Jan Dj=E4rv > Date: Wed, 29 Feb 2012 22:23:48 +0100 > Cc: Hannu Koivisto , > 10913@debbugs.gnu.org >=20 > > Anyway, if I'm to believe this backtrace (which I don't, since th= e > > build is evidently optimized), the crash happened here: > >=20 > > =09 switch (SWITCH_ENUM_CAST ((re_opcode_t) *pat++)) > > =09 { > > =09 case on_failure_keep_string_jump: > > =09 assert (str =3D=3D NULL); > > =09 goto continue_failure_jump; > >=20 > > =09 case on_failure_jump_nastyloop: > > =09 assert ((re_opcode_t)pat[-2] =3D=3D no_op); > > =09 PUSH_FAILURE_POINT (pat - 2, str); > > =09 /* Fallthrough */ > > =09 ... > > =09 default: > > =09 abort (); <<<<<<<<<<<<<<<<<<<<< > > =09 } > >=20 > > which means what? that compile_pattern produced an invalid result= ? > > I'd be surprised. >=20 >=20 > Remember that optimization may join aborts together, so they look l= ike they happened there, but it can be just about any abort in that f= ile. True. Exactly the reason why I wrote that I don't believe this backtrace.