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#14666: 24.3.50; emacs_backtrace.txt Date: Wed, 19 Jun 2013 19:47:23 +0300 Message-ID: <83ppvioxno.fsf@gnu.org> References: <015b7f9e-f365-4c91-bdf7-2fc8f08b256a@default> <83sj0eozd9.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1371660489 28470 80.91.229.3 (19 Jun 2013 16:48:09 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 19 Jun 2013 16:48:09 +0000 (UTC) Cc: 14666@debbugs.gnu.org To: lekktu@gmail.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Jun 19 18:48:09 2013 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 1UpLYG-0008GK-V0 for geb-bug-gnu-emacs@m.gmane.org; Wed, 19 Jun 2013 18:48:09 +0200 Original-Received: from localhost ([::1]:41097 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UpLYG-00006x-KF for geb-bug-gnu-emacs@m.gmane.org; Wed, 19 Jun 2013 12:48:08 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:53998) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UpLYB-00006r-Vs for bug-gnu-emacs@gnu.org; Wed, 19 Jun 2013 12:48:05 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UpLYA-0001n5-V8 for bug-gnu-emacs@gnu.org; Wed, 19 Jun 2013 12:48:03 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:33495) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UpLYA-0001mz-Rr for bug-gnu-emacs@gnu.org; Wed, 19 Jun 2013 12:48:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1UpLYA-0005Bv-B2 for bug-gnu-emacs@gnu.org; Wed, 19 Jun 2013 12:48:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 19 Jun 2013 16:48:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 14666 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 14666-submit@debbugs.gnu.org id=B14666.137166044819889 (code B ref 14666); Wed, 19 Jun 2013 16:48:02 +0000 Original-Received: (at 14666) by debbugs.gnu.org; 19 Jun 2013 16:47:28 +0000 Original-Received: from localhost ([127.0.0.1]:56044 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1UpLXb-0005Aj-SQ for submit@debbugs.gnu.org; Wed, 19 Jun 2013 12:47:28 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:56401) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1UpLXY-0005AQ-Tg for 14666@debbugs.gnu.org; Wed, 19 Jun 2013 12:47:26 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0MON00L00FLNE700@a-mtaout20.012.net.il> for 14666@debbugs.gnu.org; Wed, 19 Jun 2013 19:47:18 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MON00LR0FYR3790@a-mtaout20.012.net.il>; Wed, 19 Jun 2013 19:47:15 +0300 (IDT) In-reply-to: <83sj0eozd9.fsf@gnu.org> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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:75353 Archived-At: > Date: Wed, 19 Jun 2013 19:10:26 +0300 > From: Eli Zaretskii > Cc: 14666@debbugs.gnu.org > > LISP_INLINE struct buffer * > XBUFFER (Lisp_Object a) > { > eassert (BUFFERP (a)); > return XUNTAG (a, Lisp_Vectorlike); <<<<<<<<<<<<<<< > } > > I don't see how XUNTAG can crash, so the only possible cause that's > left is the assertion before that. But how can the assertion be > false, when line 3189 of w32fns.c is only executed if w->contents _is_ > a buffer? The only explanation is that another thread modified w->contents after it was tested with BUFFERP.