From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Post-mortem debugging and abort Date: Fri, 13 Jun 2008 21:50:52 +0200 Message-ID: <85skvhp10j.fsf@lola.goethe.zz> References: <86od65gyyr.fsf@lola.quinscape.zz> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1213386678 5565 80.91.229.12 (13 Jun 2008 19:51:18 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 13 Jun 2008 19:51:18 +0000 (UTC) Cc: Eli Zaretskii , emacs-devel@gnu.org To: Tom Tromey Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jun 13 21:52:00 2008 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1K7FJV-0000zB-MW for ged-emacs-devel@m.gmane.org; Fri, 13 Jun 2008 21:51:58 +0200 Original-Received: from localhost ([127.0.0.1]:38193 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1K7FIh-0001im-AV for ged-emacs-devel@m.gmane.org; Fri, 13 Jun 2008 15:51:07 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1K7FIc-0001iX-MS for emacs-devel@gnu.org; Fri, 13 Jun 2008 15:51:02 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1K7FIb-0001ha-4v for emacs-devel@gnu.org; Fri, 13 Jun 2008 15:51:02 -0400 Original-Received: from [199.232.76.173] (port=43502 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1K7FIa-0001hX-Vq for emacs-devel@gnu.org; Fri, 13 Jun 2008 15:51:01 -0400 Original-Received: from mail-in-08.arcor-online.net ([151.189.21.48]:46433) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1K7FIV-0000Jf-RV; Fri, 13 Jun 2008 15:50:56 -0400 Original-Received: from mail-in-20-z2.arcor-online.net (mail-in-20-z2.arcor-online.net [151.189.8.85]) by mail-in-08.arcor-online.net (Postfix) with ESMTP id 2952427B271; Fri, 13 Jun 2008 21:50:53 +0200 (CEST) Original-Received: from mail-in-01.arcor-online.net (mail-in-01.arcor-online.net [151.189.21.41]) by mail-in-20-z2.arcor-online.net (Postfix) with ESMTP id 1C0CE107B09; Fri, 13 Jun 2008 21:50:53 +0200 (CEST) Original-Received: from lola.goethe.zz (dslb-084-061-073-040.pools.arcor-ip.net [84.61.73.40]) by mail-in-01.arcor-online.net (Postfix) with ESMTP id D88D2104E32; Fri, 13 Jun 2008 21:50:52 +0200 (CEST) Original-Received: by lola.goethe.zz (Postfix, from userid 1002) id 933101C39583; Fri, 13 Jun 2008 21:50:52 +0200 (CEST) In-Reply-To: (Tom Tromey's message of "Fri, 13 Jun 2008 11:04:11 -0600") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) X-Virus-Scanned: ClamAV 0.93.1/7469/Fri Jun 13 20:01:29 2008 on mail-in-01.arcor-online.net X-Virus-Status: Clean X-detected-kernel: by monty-python.gnu.org: Linux 2.4-2.6 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:99141 Archived-At: Tom Tromey writes: >>>>>> "Eli" == Eli Zaretskii writes: > > Eli> Sigh. I concluded a long time ago that it is useless to ask GCC and > Eli> glibc developers to cater to debugging needs. At best, you are > Eli> ignored; but more often you are flamed back into silence. I'm sorry > Eli> that you, David, wasted your effort as well on this. > > FWIW on the GCC side there is a renewed awareness of the needs of > debuggers. There are a couple competing proposals for better > debuginfo; they are both being presented at the GCC Summit next week. > > So, I encourage folks to report GCC bugs in this area. I can't > guarantee that nobody will be rude -- though this seems to happen less > often nowadays. No static debuginfo can help reconstructing a _jump_ history when several places in the code jump to the same abort call. Only _call_ histories can be reconstructed with good debug info. -- David Kastrup, Kriemhildstr. 15, 44793 Bochum