From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 34165 invoked by alias); 9 Oct 2017 07:52:54 -0000 Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org Received: (qmail 34152 invoked by uid 89); 9 Oct 2017 07:52:53 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.1 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_PASS autolearn=ham version=3.3.2 spammy= X-HELO: eggs.gnu.org Received: from eggs.gnu.org (HELO eggs.gnu.org) (208.118.235.92) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 09 Oct 2017 07:52:52 +0000 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e1Srm-0001H7-An for gdb@sourceware.org; Mon, 09 Oct 2017 03:52:50 -0400 Received: from fencepost.gnu.org ([2001:4830:134:3::e]:52937) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e1Srm-0001H1-7M; Mon, 09 Oct 2017 03:52:46 -0400 Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4772 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1e1Srl-0003cY-KU; Mon, 09 Oct 2017 03:52:46 -0400 Date: Mon, 09 Oct 2017 07:52:00 -0000 Message-Id: <83bmlgsqpm.fsf@gnu.org> From: Eli Zaretskii To: simark@simark.ca CC: gdb@sourceware.org In-reply-to: <83d15wsrvw.fsf@gnu.org> (message from Eli Zaretskii on Mon, 09 Oct 2017 10:27:15 +0300) Subject: Re: Breakpoint commands in MI mode and "backtrace" Reply-to: Eli Zaretskii References: <8360bqt0im.fsf@gnu.org> <8a3d7153-7486-032f-aabc-6c3453f96459@simark.ca> <83shetsdg2.fsf@gnu.org> <83o9phs8zw.fsf@gnu.org> <83d15wsrvw.fsf@gnu.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-IsSubscribed: yes X-SW-Source: 2017-10/txt/msg00028.txt.bz2 > Date: Mon, 09 Oct 2017 10:27:15 +0300 > From: Eli Zaretskii > CC: gdb@sourceware.org > > > Cc: gdb@sourceware.org > > From: Simon Marchi > > Date: Mon, 9 Oct 2017 00:16:28 -0400 > > > > Hmm, strange. It is a quite complex function being executed in the hookpost-backtrace. > > Do you have any idea what line generates the error? It would be nice to have a > > reproducer without having to build emacs... > > It's this line in xgetsysm: > > set $ptr = ((struct Lisp_Symbol *) ((char *)lispsym + $ptr)) > > where $ptr is a pointer to a Lisp_Symbol object: > > (gdb) p $ptr > $2 = (struct Lisp_Symbol *) 0x17c9e38 > > and lispsym is an array: > > (gdb) ptype lispsym > type = struct { > struct Lisp_Symbol s; > } [1298] > > Let me know if I can provide more information about this. Btw, with the patch, I get the same error if I invoke GDB in CLI mode. Thanks.