I made a little modification to this patch, and after verification, emacs does not crash anymore, thanks!😊
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);+ if (face)
+ {
+ face = face->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;