From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.bugs Subject: bug#7952: 24.0.50; crash in find_interval Date: Sat, 19 Mar 2011 13:14:48 +0100 Message-ID: References: <87r5ag7a72.fsf@silenus.orebokech.com> <87lj0c1bj8.fsf@silenus.orebokech.com> <8339mkrzic.fsf@gnu.org> <87ei6417kl.fsf@silenus.orebokech.com> <83r5a3qtts.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1300538240 20371 80.91.229.12 (19 Mar 2011 12:37:20 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sat, 19 Mar 2011 12:37:20 +0000 (UTC) Cc: Romain Francoise , 7952@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Mar 19 13:37:15 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Q0vP8-00029m-Ow for geb-bug-gnu-emacs@m.gmane.org; Sat, 19 Mar 2011 13:37:14 +0100 Original-Received: from localhost ([127.0.0.1]:36589 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q0vP8-00034M-72 for geb-bug-gnu-emacs@m.gmane.org; Sat, 19 Mar 2011 08:37:14 -0400 Original-Received: from [140.186.70.92] (port=57911 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q0vP0-000345-JW for bug-gnu-emacs@gnu.org; Sat, 19 Mar 2011 08:37:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q0vOw-0003z8-Cx for bug-gnu-emacs@gnu.org; Sat, 19 Mar 2011 08:37:06 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:39135) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q0vOw-0003z1-9i for bug-gnu-emacs@gnu.org; Sat, 19 Mar 2011 08:37:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1Q0v3f-0005Jp-1B; Sat, 19 Mar 2011 08:15:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andreas Schwab Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-To: owner@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 19 Mar 2011 12:15:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 7952 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 7952-submit@debbugs.gnu.org id=B7952.130053690120424 (code B ref 7952); Sat, 19 Mar 2011 12:15:02 +0000 Original-Received: (at 7952) by debbugs.gnu.org; 19 Mar 2011 12:15:01 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Q0v3c-0005JN-P6 for submit@debbugs.gnu.org; Sat, 19 Mar 2011 08:15:01 -0400 Original-Received: from mail-out.m-online.net ([212.18.0.9]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Q0v3a-0005JB-95 for 7952@debbugs.gnu.org; Sat, 19 Mar 2011 08:14:59 -0400 Original-Received: from frontend1.mail.m-online.net (unknown [192.168.8.180]) by mail-out.m-online.net (Postfix) with ESMTP id A0E691C1DA0F; Sat, 19 Mar 2011 13:14:52 +0100 (CET) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.8.164]) by mail.m-online.net (Postfix) with ESMTP id 950A81C00117; Sat, 19 Mar 2011 13:14:52 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.180]) by localhost (dynscan1.mail.m-online.net [192.168.8.164]) (amavisd-new, port 10024) with ESMTP id EwuTXTxpbeuj; Sat, 19 Mar 2011 13:14:52 +0100 (CET) Original-Received: from igel.home (ppp-93-104-145-233.dynamic.mnet-online.de [93.104.145.233]) by mail.mnet-online.de (Postfix) with ESMTP; Sat, 19 Mar 2011 13:14:51 +0100 (CET) Original-Received: by igel.home (Postfix, from userid 501) id 6CC8DCA2A0; Sat, 19 Mar 2011 13:14:48 +0100 (CET) X-Yow: I am having FUN... I wonder if it's NET FUN or GROSS FUN? In-Reply-To: <83r5a3qtts.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 19 Mar 2011 12:37:51 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Sat, 19 Mar 2011 08:15:03 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) 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: , Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:45165 Archived-At: Eli Zaretskii writes: > There's nothing in this code that modifies `tree' in any way. (I even > disassembled the code to make sure.) So how come a non-NULL value > becomes NULL here? It isn't, otherwise you would get a crash. > Since this value is passed in a register by the caller and kept in a > register from the very beginning of the function, not even some > missing GCPRO somewhere could explain this. What am I missing? Probably your toolchain is too old to be able to produce complete unwind information. Try setting a breakpoint at the abort line to get a better picture. 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."