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bug#65198: 29.1; Emacs29.1 crash in function face_for_font
From: |
Eli Zaretskii |
Subject: |
bug#65198: 29.1; Emacs29.1 crash in function face_for_font |
Date: |
Fri, 11 Aug 2023 18:30:44 +0300 |
> From: 张云峰 <zhangyunfeng0101@gmail.com>
> Date: Fri, 11 Aug 2023 22:55:29 +0800
> Cc: 65198@debbugs.gnu.org
>
> (compile emacs without pgtk)
>
> (gdb) p it->face_id
> $13 = 0
> (gdb) p it->c
> $14 = 9888
> (gdb) p FRAME_FONT(it->f)
> No symbol "FRAME_FONT" in current context.
> (gdb) p it->f
> $15 = (struct frame *) 0x5555586492e0
> (gdb) p (it->f)->output_data.x->font
> $16 = (struct font *) 0x555558ca8c18
OK. A new patch (which includes the previous one, so please apply to
the original code):
diff --git a/src/xdisp.c b/src/xdisp.c
index 9cddcfe..830b622 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -8312,9 +8312,14 @@ get_next_display_element (struct it *it)
&& success_p
&& FRAME_WINDOW_P (it->f))
{
- struct face *face = FACE_FROM_ID (it->f, it->face_id);
+ struct face *face = FACE_FROM_ID_OR_NULL (it->f, it->face_id);
- if (it->what == IT_COMPOSITION && it->cmp_it.ch >= 0)
+ if (!face)
+ {
+ it->what = IT_GLYPHLESS;
+ it->glyphless_method = GLYPHLESS_DISPLAY_EMPTY_BOX;
+ }
+ else if (it->what == IT_COMPOSITION && it->cmp_it.ch >= 0)
{
/* Automatic composition with glyph-string. */
Lisp_Object gstring = composition_gstring_from_id (it->cmp_it.id);
@@ -31782,8 +31787,8 @@ produce_glyphless_glyph (struct it *it, bool
for_no_font, Lisp_Object acronym)
/* Get the metrics of the base font. We always refer to the current
ASCII face. */
- face = FACE_FROM_ID (it->f, it->face_id)->ascii_face;
- font = face->font ? face->font : FRAME_FONT (it->f);
+ face = FACE_FROM_ID_OR_NULL (it->f, it->face_id)->ascii_face;
+ font = (face && face->font) ? face->font : FRAME_FONT (it->f);
normal_char_ascent_descent (font, -1, &it->ascent, &it->descent);
it->ascent += font->baseline_offset;
it->descent -= font->baseline_offset;
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, 张云峰, 2023/08/10
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, Eli Zaretskii, 2023/08/10
- Message not available
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, Eli Zaretskii, 2023/08/10
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, 张云峰, 2023/08/10
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, Eli Zaretskii, 2023/08/10
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, 张云峰, 2023/08/10
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, 张云峰, 2023/08/10
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, Eli Zaretskii, 2023/08/11
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, 张云峰, 2023/08/11
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, 张云峰, 2023/08/11
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font,
Eli Zaretskii <=
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, 张云峰, 2023/08/11
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, Eli Zaretskii, 2023/08/12
- bug#65198: 29.1; Emacs29.1 crash in function face_for_font, Eli Zaretskii, 2023/08/11