From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#35429: 27.0.50; Arbitrary xdisp.c related crashes when working with overlay-using packages Date: Fri, 26 Apr 2019 21:32:26 +0300 Message-ID: <83pnp8wrb9.fsf@gnu.org> References: <83r29pygqk.fsf@gnu.org> <83ef5pxmjc.fsf@gnu.org> <83r29owsev.fsf@gnu.org> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="260810"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 35429@debbugs.gnu.org To: Kaushal Modi Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Apr 26 20:33:20 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hK5ey-0015ih-1h for geb-bug-gnu-emacs@m.gmane.org; Fri, 26 Apr 2019 20:33:20 +0200 Original-Received: from localhost ([127.0.0.1]:50656 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hK5ex-0004jO-10 for geb-bug-gnu-emacs@m.gmane.org; Fri, 26 Apr 2019 14:33:19 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:33620) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hK5eh-0004ht-MT for bug-gnu-emacs@gnu.org; Fri, 26 Apr 2019 14:33:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hK5eg-00063K-P9 for bug-gnu-emacs@gnu.org; Fri, 26 Apr 2019 14:33:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:48234) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hK5eg-00062p-Ls for bug-gnu-emacs@gnu.org; Fri, 26 Apr 2019 14:33:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hK5eg-0005a5-FI for bug-gnu-emacs@gnu.org; Fri, 26 Apr 2019 14:33:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 26 Apr 2019 18:33:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 35429 X-GNU-PR-Package: emacs Original-Received: via spool by 35429-submit@debbugs.gnu.org id=B35429.155630358021445 (code B ref 35429); Fri, 26 Apr 2019 18:33:02 +0000 Original-Received: (at 35429) by debbugs.gnu.org; 26 Apr 2019 18:33:00 +0000 Original-Received: from localhost ([127.0.0.1]:33545 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hK5ee-0005Zp-6q for submit@debbugs.gnu.org; Fri, 26 Apr 2019 14:33:00 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:47363) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hK5eY-0005ZJ-Lh for 35429@debbugs.gnu.org; Fri, 26 Apr 2019 14:32:55 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:59106) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hK5eR-0005qU-Fn; Fri, 26 Apr 2019 14:32:47 -0400 Original-Received: from [176.228.60.248] (port=1091 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1hK5eO-0002qV-3J; Fri, 26 Apr 2019 14:32:45 -0400 In-reply-to: (message from Kaushal Modi on Fri, 26 Apr 2019 14:22:51 -0400) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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" Xref: news.gmane.org gmane.emacs.bugs:158307 Archived-At: > From: Kaushal Modi > Date: Fri, 26 Apr 2019 14:22:51 -0400 > Cc: 35429@debbugs.gnu.org > > (gdb) p current_buffer->name_ > $9 = XIL(0xc35be44) > (gdb) xstring > $10 = (struct Lisp_String *) 0xc35be40 > "ascii-art-to-unicode.el" > (gdb) fr 2 > #2 0x0000000000456b44 in init_iterator (it=it@entry=0x7fffffff3040, w=w@entry=0x89da880, charpos=2874, > bytepos=, row=, > base_face_id=base_face_id@entry=DEFAULT_FACE_ID) > at xdisp.c:3047 > 3047 eassert (charpos == BYTE_TO_CHAR (bytepos)); > (gdb) p w->contents > $11 = XIL(0xc35be95) > (gdb) xtype > Lisp_Vectorlike > PVEC_BUFFER > (gdb) xbuffer > $12 = (struct buffer *) 0xc35be90 > (unsigned char *) 0xb6e97a0 "ascii-art-to-unicode.el" > (gdb) > > I hope this helps. It does. So now what do the following commands tell? (gdb) fr 2 (gdb) p w->start (gdb) xmarker (gdb) p *$