From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Alan Third Newsgroups: gmane.emacs.bugs Subject: bug#22818: 25.1.1 Emacs.app crash ns_compute_glyph_string_overhangs Date: Sat, 19 Nov 2016 19:05:39 +0000 Message-ID: <20161119190539.GA36653@breton.holly.idiocy.org> References: <83twb4aqwp.fsf@gnu.org> <20161119100703.GA66661@breton.holly.idiocy.org> <83k2bzbw8g.fsf@gnu.org> <20161119111823.GA66770@breton.holly.idiocy.org> <83inrjbsq2.fsf@gnu.org> <20161119145336.GA591@breton.holly.idiocy.org> <83d1hrbj71.fsf@gnu.org> <20161119155112.GB591@breton.holly.idiocy.org> <83bmxbbaq0.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: blaine.gmane.org 1479582372 24763 195.159.176.226 (19 Nov 2016 19:06:12 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 19 Nov 2016 19:06:12 +0000 (UTC) User-Agent: Mutt/1.7.0 (2016-08-17) Cc: 22818@debbugs.gnu.org, josh@berdine.net To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Nov 19 20:06:08 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1c8Axj-0005mz-U0 for geb-bug-gnu-emacs@m.gmane.org; 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[2001:8b0:3f8:8129:6c02:5eab:bb15:1042]) by smtp.gmail.com with ESMTPSA id 63sm10156439wmg.2.2016.11.19.11.05.41 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 19 Nov 2016 11:05:42 -0800 (PST) Content-Disposition: inline In-Reply-To: <83bmxbbaq0.fsf@gnu.org> 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: 208.118.235.43 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:125881 Archived-At: On Sat, Nov 19, 2016 at 08:12:07PM +0200, Eli Zaretskii wrote: > > Date: Sat, 19 Nov 2016 15:51:12 +0000 > > From: Alan Third > > Cc: josh@berdine.net, 22818@debbugs.gnu.org > > > > (gdb) p s->face.id > > $1 = 17 > > (gdb) p lface_id_to_name[17] > > $2 = 31008 > > (gdb) xsymbol > > $3 = (struct Lisp_Symbol *) 0x7ab8 > > Cannot access memory at address 0x7ac0 > > (gdb) > > So I guess that face was freed or otherwise made invalid. I thought > we've got rid of these problems, sigh... > > If you start "emacs -Q", let Emacs start up, and then look at that > face ID, do you see a valid symbol? IOW, do this: > > $ gdb ./emacs > ... > (gdb) break Fredraw_display > (gdb) r -Q > > Then, after Emacs starts up, type "M-x redraw-display RET", and at the > GDB prompt type: > > (gdb) p lface_id_to_name[17] > (gdb) xsymbol > > What does that show? > > And what is the value of next_lface_id at that point? (gdb) p lface_id_to_name[17] $1 = 31008 (gdb) xsymbol $2 = (struct Lisp_Symbol *) 0x7ab8 Cannot access memory at address 0x7ac0 (gdb) p next_lface_id $3 = 84 -- Alan Third