From: "Gerd Möllmann" <gerd.moellmann@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org, eller.helmut@gmail.com
Subject: Re: Building the igc branch on MS-Windows
Date: Sat, 27 Apr 2024 14:41:10 +0200 [thread overview]
Message-ID: <m25xw3htax.fsf@pro2.fritz.box> (raw)
In-Reply-To: <86ttjnuhyr.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 27 Apr 2024 15:07:40 +0300")
Eli Zaretskii <eliz@gnu.org> writes:
>> Date: Sat, 27 Apr 2024 14:44:57 +0300
>> From: Eli Zaretskii <eliz@gnu.org>
>> Cc: eller.helmut@gmail.com, emacs-devel@gnu.org
>>
>> I added both ascii_font and extra to fix_face, but the segfault is
>> still there. What else can be done to dig into this crash?
>
> Not sure if this helps, but what I see when Emacs crashes is that it
> happens when the display code needs to use a face that is cached under
> index 22 in the frame's face cache. That face seems to be clobbered,
> but all the 22 faces before it in the face cache are valid. The
> cache's 'used' count is 57, so index 22 should be valid. It sounds
> like some part of the cache was released or relocated, but we weren't
> told about that.
Oh, that could explain the font problem, if we loose the face
referencing it.
> Looking at the related parts in igc.c, I'm confused by how we handle
> frames, their face caches, and the faces themselves. We have:
>
> . fix_face
> . fix_face_cache
> . IGC_OBJ_FACE and IGC_OBJ_FACE_CACHE cases in dflt_scanx
> . call to IGC_FIX12_RAW (ss, &f->face_cache) in fix_frame
> . igc_make_face_cache (which seems to treat a face cache as a PVEC??)
>
> Can you explain what each one of these do (or is supposed to do) in
> the context of this puzzle?
I can try, although it's several weeks old now :-).
And I must stress that getting as far as we are now wasn't originally
part of my experiment, so I did only what seemed more or less obvious.
I'll write something up, and send it in a separate mail. (I really don't
remember the details and have to collect them :-)).
next prev parent reply other threads:[~2024-04-27 12:41 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 15:06 Building the igc branch on MS-Windows Eli Zaretskii
2024-04-24 15:20 ` Gerd Möllmann
2024-04-24 16:07 ` Eli Zaretskii
2024-04-24 16:48 ` Gerd Möllmann
2024-04-24 16:59 ` Gerd Möllmann
2024-04-24 19:09 ` Eli Zaretskii
2024-04-24 19:44 ` Gerd Möllmann
2024-04-25 5:38 ` Eli Zaretskii
2024-04-25 6:17 ` Gerd Möllmann
2024-04-25 4:54 ` Helmut Eller
2024-04-25 5:30 ` Eli Zaretskii
2024-04-25 6:38 ` Helmut Eller
2024-04-25 7:39 ` Gerd Möllmann
2024-04-25 10:34 ` Eli Zaretskii
2024-04-25 11:09 ` Eli Zaretskii
2024-04-25 11:16 ` Eli Zaretskii
2024-04-25 11:59 ` Gerd Möllmann
2024-04-25 13:22 ` Eli Zaretskii
2024-04-25 13:29 ` Gerd Möllmann
2024-04-25 11:55 ` Gerd Möllmann
2024-04-25 13:29 ` Eli Zaretskii
2024-04-25 14:00 ` Gerd Möllmann
2024-04-25 14:34 ` Eli Zaretskii
2024-04-25 14:40 ` Gerd Möllmann
2024-04-25 12:35 ` Helmut Eller
2024-04-25 12:40 ` Gerd Möllmann
2024-04-26 7:18 ` Helmut Eller
2024-04-26 7:38 ` Gerd Möllmann
2024-04-26 7:41 ` Eli Zaretskii
2024-04-26 8:11 ` Gerd Möllmann
2024-04-26 9:13 ` Helmut Eller
2024-04-26 9:31 ` Gerd Möllmann
2024-04-26 10:55 ` Eli Zaretskii
2024-04-26 11:27 ` Po Lu
2024-04-26 13:04 ` Gerd Möllmann
2024-04-26 13:42 ` Po Lu
2024-04-26 13:46 ` Gerd Möllmann
2024-04-26 14:35 ` Gerd Möllmann
2024-04-26 10:35 ` Eli Zaretskii
2024-04-26 10:56 ` Gerd Möllmann
2024-04-26 11:25 ` Eli Zaretskii
2024-04-26 11:38 ` Po Lu
2024-04-26 12:58 ` Gerd Möllmann
2024-04-26 14:49 ` Eli Zaretskii
2024-04-26 14:53 ` Gerd Möllmann
2024-04-27 0:21 ` Po Lu
2024-04-27 6:13 ` Eli Zaretskii
2024-04-27 6:48 ` Gerd Möllmann
2024-04-27 7:13 ` Eli Zaretskii
2024-04-26 12:58 ` Gerd Möllmann
2024-04-26 15:11 ` Eli Zaretskii
2024-04-26 15:27 ` Gerd Möllmann
2024-04-26 11:32 ` Eli Zaretskii
2024-04-26 13:09 ` Gerd Möllmann
2024-04-26 13:12 ` Gerd Möllmann
2024-04-26 15:01 ` Helmut Eller
2024-04-26 15:30 ` Gerd Möllmann
2024-04-26 15:39 ` Eli Zaretskii
2024-04-26 17:03 ` Gerd Möllmann
2024-04-26 18:24 ` Helmut Eller
2024-04-26 18:37 ` Gerd Möllmann
2024-04-26 16:57 ` Gerd Möllmann
2024-04-26 18:11 ` Helmut Eller
2024-04-26 18:30 ` Gerd Möllmann
2024-04-26 20:45 ` Helmut Eller
2024-04-27 4:22 ` Gerd Möllmann
2024-04-27 5:18 ` Ihor Radchenko
2024-04-27 5:26 ` Gerd Möllmann
2024-04-27 5:54 ` Ihor Radchenko
2024-04-27 6:07 ` Gerd Möllmann
2024-04-27 6:31 ` Gerd Möllmann
2024-04-27 6:22 ` Eli Zaretskii
2024-04-27 6:29 ` Ihor Radchenko
2024-04-27 7:11 ` Eli Zaretskii
2024-04-27 7:40 ` Ihor Radchenko
2024-04-27 6:45 ` Gerd Möllmann
2024-04-27 6:11 ` Eli Zaretskii
2024-04-27 6:58 ` Eli Zaretskii
2024-04-27 7:17 ` Eli Zaretskii
2024-04-27 8:38 ` Gerd Möllmann
2024-04-27 11:15 ` Eli Zaretskii
2024-04-27 12:09 ` Gerd Möllmann
2024-04-27 12:33 ` Eli Zaretskii
2024-04-27 12:37 ` Eli Zaretskii
2024-04-27 13:26 ` Gerd Möllmann
2024-04-27 14:54 ` Eli Zaretskii
2024-04-27 15:25 ` Gerd Möllmann
2024-04-27 15:40 ` Eli Zaretskii
2024-04-27 15:47 ` Helmut Eller
2024-04-27 15:48 ` Gerd Möllmann
2024-04-27 7:23 ` Gerd Möllmann
2024-04-27 7:33 ` Eli Zaretskii
2024-04-27 9:04 ` Gerd Möllmann
2024-04-27 11:44 ` Eli Zaretskii
2024-04-27 12:07 ` Eli Zaretskii
2024-04-27 12:41 ` Gerd Möllmann [this message]
2024-04-27 13:23 ` Gerd Möllmann
2024-04-27 12:32 ` Gerd Möllmann
2024-04-27 14:11 ` Gerd Möllmann
2024-04-27 14:47 ` Eli Zaretskii
2024-04-27 15:09 ` Gerd Möllmann
2024-04-27 15:15 ` Helmut Eller
2024-04-27 15:29 ` Gerd Möllmann
2024-04-27 15:38 ` Eli Zaretskii
2024-04-27 15:42 ` Gerd Möllmann
2024-04-27 16:37 ` Gerd Möllmann
2024-04-27 15:23 ` Gerd Möllmann
2024-04-28 6:31 ` Eli Zaretskii
2024-04-28 6:44 ` Gerd Möllmann
2024-04-27 7:17 ` Gerd Möllmann
2024-04-27 12:11 ` Helmut Eller
2024-04-27 12:32 ` Eli Zaretskii
2024-04-27 13:41 ` Helmut Eller
2024-04-26 8:12 ` Helmut Eller
2024-04-26 8:57 ` Gerd Möllmann
2024-04-26 10:39 ` Eli Zaretskii
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