From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: storm@cua.dk (Kim F. Storm) Newsgroups: gmane.emacs.devel Subject: Re: Fix to long-standing crashes in GC Date: 20 May 2004 00:33:32 +0200 Sender: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Message-ID: References: <40A3BC23.8060000@math.ku.dk> <200405180013.i4I0Ddl15818@raven.dms.auburn.edu> NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1085016167 13388 80.91.224.253 (20 May 2004 01:22:47 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 20 May 2004 01:22:47 +0000 (UTC) Cc: Luc Teirlinck , rms@gnu.org, emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Thu May 20 03:22:40 2004 Return-path: Original-Received: from quimby.gnus.org ([80.91.224.244]) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1BQcGe-0005TW-00 for ; Thu, 20 May 2004 03:22:40 +0200 Original-Received: from monty-python.gnu.org ([199.232.76.173]) by quimby.gnus.org with esmtp (Exim 3.35 #1 (Debian)) id 1BQcGe-0006Ug-00 for ; Thu, 20 May 2004 03:22:40 +0200 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.34) id 1BQc72-0001Ky-HV for emacs-devel@quimby.gnus.org; Wed, 19 May 2004 21:12:44 -0400 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.34) id 1BQc3i-0000FV-4D for emacs-devel@gnu.org; Wed, 19 May 2004 21:09:18 -0400 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.34) id 1BQbt3-0005Q6-5z for emacs-devel@gnu.org; Wed, 19 May 2004 20:58:53 -0400 Original-Received: from [199.232.41.8] (helo=mx20.gnu.org) by monty-python.gnu.org with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.34) id 1BQboB-0004B4-JR; Wed, 19 May 2004 20:53:21 -0400 Original-Received: from [195.41.46.236] (helo=pfepb.post.tele.dk) by mx20.gnu.org with esmtp (Exim 4.34) id 1BQZhY-00018J-Hb; Wed, 19 May 2004 18:38:22 -0400 Original-Received: from kfs-l.imdomain.dk.cua.dk (0x503e2644.bynxx3.adsl-dhcp.tele.dk [80.62.38.68]) by pfepb.post.tele.dk (Postfix) with SMTP id C2E4B5EE016; Thu, 20 May 2004 00:33:30 +0200 (CEST) Original-To: Stefan Monnier In-Reply-To: Original-Lines: 18 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.4 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Xref: main.gmane.org gmane.emacs.devel:23753 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:23753 Stefan Monnier writes: > > So setting evalargs and debug_on_exit clears the lower part of the > > Lisp_Object which happened to be on the stack on entry, but not the rest > > of it, so it points into a legal cons_block cell, but one which probably > > isn't in use anymore. > > > I will install a fix for this specific issue shortly. > > Please show us the fix first. The fix was to pad/zero-fill the backtrace structure. Understanding more about what's going on now, that fix is not needed, so I will not install it. -- Kim F. Storm http://www.cua.dk