From: Eli Zaretskii <eliz@gnu.org>
To: kirill@korins.ky
Cc: 71712@debbugs.gnu.org
Subject: bug#71712: 29.3; Crash on OpenBSD
Date: Sat, 22 Jun 2024 10:45:01 +0300 [thread overview]
Message-ID: <864j9lju9u.fsf@gnu.org> (raw)
In-Reply-To: <e138fc9f41965470@mx1.catap.net> (message from Kirill A. Korinsky on Sat, 22 Jun 2024 01:01:34 +0100)
> Date: Sat, 22 Jun 2024 01:01:34 +0100
> From: Kirill A. Korinsky <kirill@korins.ky>
>
> #8 gui_produce_glyphs (it=0x723f0516bb70) at xdisp.c:31959
> char2b = <optimized out>
> face = 0x0
> font = <optimized out>
> pcm = <optimized out>
> boff = <optimized out>
> extra_line_spacing = 0
> #9 0x00000bf72613ced7 in produce_special_glyphs (it=0x723f0516cf78, what=<optimized out>) at xdisp.c:31605
Thanks. Is this reproducible? If so, can you show a recipe,
preferably starting from "emacs -Q"?
FWIW, I looked at the code, and I cannot understand how this could
happen. The cause of the crash is that 'face' is NULL, so face->font
segfaults. But 'face' is obtained from 'face_id', which is zero,
i.e. it's the default face:
> glyph = {ch = 36, face_id = 0}
And init_iterator, which called produce_special_glyphs, makes sure the
basic faces, including the default face, are recomputed just before
the call to produce_special_glyphs:
if (FRAME_FACE_CACHE (it->f) == NULL)
init_frame_faces (it->f);
if (FRAME_FACE_CACHE (it->f)->used == 0)
recompute_basic_faces (it->f);
And recompute_basic_faces aborts if it is unsuccessful in recomputing
the basic faces, one of which is the default face. Which didn't
happen here. So how this could happen is a mystery to me; I'm
probably missing something.
next prev parent reply other threads:[~2024-06-22 7:45 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-22 0:01 bug#71712: 29.3; Crash on OpenBSD Kirill A. Korinsky
2024-06-22 1:24 ` Stefan Kangas
2024-06-22 7:45 ` Eli Zaretskii [this message]
2024-06-22 9:28 ` Kirill A. Korinsky
2024-06-22 10:00 ` Eli Zaretskii
2024-06-22 11:00 ` Kirill A. Korinsky
2024-06-22 12:59 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-06-22 14:41 ` Kirill A. Korinsky
2024-06-22 15:55 ` Eli Zaretskii
2024-06-26 9:11 ` Kirill A. Korinsky
2024-06-26 13:14 ` Eli Zaretskii
2024-06-26 15:58 ` Kirill A. Korinsky
2024-06-26 16:11 ` Eli Zaretskii
2024-06-26 22:00 ` Kirill A. Korinsky
2024-06-27 5:33 ` Eli Zaretskii
2024-06-27 11:44 ` Kirill A. Korinsky
2024-06-27 12:33 ` Eli Zaretskii
2024-06-27 13:36 ` Kirill A. Korinsky
2024-06-27 14:19 ` Gerd Möllmann
2024-06-27 14:43 ` Kirill A. Korinsky
2024-06-27 15:01 ` Gerd Möllmann
2024-06-30 8:52 ` Manuel Giraud via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-06-30 16:42 ` Kirill A. Korinsky
2024-06-30 17:40 ` Manuel Giraud via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-06-30 22:58 ` Kirill A. Korinsky
2024-07-01 9:10 ` Manuel Giraud via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-07-01 11:18 ` Eli Zaretskii
2024-07-01 13:29 ` Kirill A. Korinsky
2024-07-01 13:43 ` Eli Zaretskii
2024-07-01 15:17 ` Manuel Giraud via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-07-01 16:04 ` Eli Zaretskii
2024-07-01 16:42 ` Kirill A. Korinsky
2024-07-01 17:36 ` Eli Zaretskii
2024-07-01 18:38 ` Kirill A. Korinsky
2024-08-20 19:13 ` Kirill A. Korinsky
2024-08-21 13:23 ` Eli Zaretskii
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