From: Florian Ebeling <florian.ebeling@gmail.com>
To: Chong Yidong <cyd@gnu.org>
Cc: 11541@debbugs.gnu.org
Subject: bug#11541: 24.0.97; Crash when visiting file on OS X 10.7.3
Date: Wed, 30 May 2012 16:39:21 +0200 [thread overview]
Message-ID: <CAGOk8R8Ov_1TG3DMR8qGkpGB_qwU+9DYV3BXPYJCRewdGJ+Hrg@mail.gmail.com> (raw)
In-Reply-To: <87d35lyen5.fsf@gnu.org>
On Wed, May 30, 2012 at 3:36 PM, Chong Yidong <cyd@gnu.org> wrote:
> Interesting. We need to pin down where the stack clobbering is taking
> place; I don't see an obvious problem in the code, so let's just do it
> by brute force. Could you apply the following patch (which adds three
> abort conditions to the code), trigger the bug again, then see where the
> abort takes place?
It still stops at the same location, which is 531 after the patch.
Here is the debugger session output:
#16 0x00007fff89e8a587 in TDescriptor::CreateMatchingDescriptors ()
#17 0x0000000100a32599 in -[NSCTFontDescriptor
matchingFontDescriptorsWithMandatoryKeys:] ()
#18 0x00000001001a1c70 in ns_findfonts (font_spec=140734799760960,
isMatch=0 '\0') at nsfont.m:531
(More stack frames follow...)
(gdb) f 18
#18 0x00000001001a1c70 in ns_findfonts (font_spec=140734799760960,
isMatch=0 '\000') at nsfont.m:531
531 matchingDescs = [fdesc matchingFontDescriptorsWithMandatoryKeys: fkeys];
Current language: auto; currently objective-c
(gdb) li ns_findfonts
492 /* Implementation for list() and match(). List() can return nil, match()
493 must return something. Strategy is to drop family name from attribute
494 matching set for match. */
495 static Lisp_Object
496 ns_findfonts (Lisp_Object font_spec, BOOL isMatch)
497 {
498 Lisp_Object tem, list = Qnil;
499 NSFontDescriptor *fdesc, *desc;
500 NSMutableSet *fkeys;
501 NSArray *matchingDescs;
(gdb)
502 NSEnumerator *dEnum;
503 NSString *family;
504 NSSet *cFamilies;
505 BOOL foundItal = NO;
506
507 if (NSFONT_TRACE)
508 {
509 fprintf (stderr, "nsfont: %s for fontspec:\n ",
510 (isMatch ? "match" : "list"));
511 debug_print (font_spec);
(gdb)
512 }
513
514 if (!FONT_SPEC_P (font_spec))
515 abort ();
516
517 cFamilies = ns_get_covering_families (ns_get_req_script
(font_spec), 0.90);
518
519 if (!FONT_SPEC_P (font_spec))
520 abort ();
521
(gdb)
522 fdesc = ns_spec_to_descriptor (font_spec);
523
524 if (!FONT_SPEC_P (font_spec))
525 abort ();
526
527 fkeys = [NSMutableSet setWithArray: [[fdesc fontAttributes] allKeys]];
528 if (isMatch)
529 [fkeys removeObject: NSFontFamilyAttribute];
530
531 matchingDescs = [fdesc matchingFontDescriptorsWithMandatoryKeys: fkeys];
(gdb) p font_spec
$1 = 140734799760960
(gdb) xtype
Lisp_Int0
next prev parent reply other threads:[~2012-05-30 14:39 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-22 10:29 bug#11541: 24.0.97; Crash when visiting file on OS X 10.7.3 Florian Ebeling
2012-05-24 22:08 ` bug#11541: Florian Ebeling
2012-05-26 8:33 ` bug#11541: 24.0.97; Crash when visiting file on OS X 10.7.3 Jan Djärv
2012-05-26 20:12 ` Florian Ebeling
2012-05-29 14:06 ` Chong Yidong
2012-05-29 19:48 ` Florian Ebeling
2012-05-30 3:22 ` Chong Yidong
2012-05-30 7:55 ` Florian Ebeling
2012-05-30 10:31 ` Chong Yidong
2012-05-30 10:53 ` C. Florian Ebeling
2012-05-30 13:36 ` Chong Yidong
2012-05-30 14:39 ` Florian Ebeling [this message]
2012-05-31 6:52 ` Chong Yidong
2012-05-31 7:12 ` Florian Ebeling
2012-05-31 9:31 ` Chong Yidong
2012-05-31 10:19 ` Florian Ebeling
2012-05-31 15:48 ` Eli Zaretskii
2012-05-31 17:27 ` C. Florian Ebeling
2012-05-31 17:54 ` Eli Zaretskii
2012-05-31 19:15 ` Alp Aker
2012-05-31 19:48 ` Eli Zaretskii
2012-05-31 19:50 ` C. Florian Ebeling
2012-05-31 20:11 ` Eli Zaretskii
2012-05-31 21:55 ` Florian Ebeling
2012-06-01 3:50 ` YAMAMOTO Mitsuharu
2012-06-01 5:43 ` Florian Ebeling
2012-06-01 6:14 ` Eli Zaretskii
2012-06-01 6:36 ` Florian Ebeling
2012-06-01 6:41 ` Chong Yidong
2012-06-01 6:44 ` Florian Ebeling
2012-06-01 8:53 ` Eli Zaretskii
2012-06-01 11:57 ` Jan D.
2012-06-01 13:42 ` Chong Yidong
2012-06-01 6:17 ` Eli Zaretskii
2012-06-01 6:46 ` Florian Ebeling
2012-06-01 8:47 ` Eli Zaretskii
2012-06-01 8:55 ` Florian Ebeling
2012-06-01 9:21 ` Eli Zaretskii
2012-06-01 14:51 ` Florian Ebeling
2012-06-01 16:12 ` Jan Djärv
[not found] ` <mailman.2085.1338562350.855.bug-gnu-emacs@gnu.org>
2012-06-18 23:06 ` jamezilla
2012-06-20 19:56 ` Florian Ebeling
[not found] ` <mailman.3138.1340222261.855.bug-gnu-emacs@gnu.org>
2012-06-22 5:29 ` jamezilla
2012-06-01 8:52 ` Florian Ebeling
2012-06-01 8:56 ` Eli Zaretskii
2012-09-26 20:30 ` bug#11541: - Another reproduction - Emacs 24.2; Null pointer on OSX with cocoa UI mrevilgnome
2012-09-26 20:41 ` mrevilgnome
2012-10-14 18:58 ` bug#11541: 24.0.97; Crash when visiting file on OS X 10.7.3 Jan Djärv
2012-10-15 21:15 ` C. Florian Ebeling
2012-10-16 5:05 ` Jan Djärv
2012-11-01 9:49 ` Thomas Kappler
2012-11-06 11:01 ` bug#11541: Possible fix Thomas Kappler
2012-11-08 19:53 ` Jan Djärv
2012-11-09 10:27 ` bug#11541: THanks! Thomas Kappler
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAGOk8R8Ov_1TG3DMR8qGkpGB_qwU+9DYV3BXPYJCRewdGJ+Hrg@mail.gmail.com \
--to=florian.ebeling@gmail.com \
--cc=11541@debbugs.gnu.org \
--cc=cyd@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.