bug#44448: Fwd: bug#44448:

[Eli Zaretskii]

> From: Amai Kinono <amaikinono@gmail.com>
> Date: Sat, 4 Dec 2021 14:13:09 +0800
> Cc: 44448@debbugs.gnu.org
> 
> I'm reopening this as I found another occurrence. Here's the backtrace:
> 
> Thread 1 "emacs" hit Breakpoint 1, signal_or_quit (error_symbol=..., 
> data=..., keyboard_quit=false) at
> eval.c:1807
> 1807 {
> #0  signal_or_quit (error_symbol=..., data=..., keyboard_quit=false) at 
> eval.c:1807
> #1  0x00005600b7049b6b in quit () at eval.c:1797
> #2  0x00005600b7049a49 in process_quit_flag () at eval.c:1744
> #3  0x00005600b7049a95 in maybe_quit () at eval.c:1764
> #4  0x00005600b705c223 in Fdelq (elt=..., list=...) at fns.c:1845
> #5  0x00005600b706cf49 in font_put_extra (font=..., prop=..., val=...) at 
> font.c:749
> #6  0x00005600b70757ca in font_clear_prop (attrs=0x7ffd8a5f1620, 
> prop=FONT_WEIGHT_INDEX) at
> font.c:3148
> #7  0x00005600b6ef3b0d in merge_face_vectors (w=0x5600b8e523a0, 
> f=0x5600b8e52160,
> from=0x7ffd8a5f1370, to=0x7ffd8a5f1620, named_merge_points=0x7ffd8a5f1350) at 
> xfaces.c:2193
> #8  0x00005600b6ef4197 in merge_named_face (w=0x5600b8e523a0, 
> f=0x5600b8e52160, face_name=...,
> to=0x7ffd8a5f1620, named_merge_points=0x7ffd8a5f1350, attr_filter=0) at 
> xfaces.c:2309
> #9  0x00005600b6ef5afe in merge_face_ref (w=0x5600b8e523a0, f=0x5600b8e52160, 
> face_ref=...,
> to=0x7ffd8a5f1620, err_msgs=false, named_merge_points=0x0, attr_filter=0) at 
> xfaces.c:2793
> #10 0x00005600b6ef38e4 in merge_face_vectors (w=0x5600b8e523a0, 
> f=0x5600b8e52160,
> from=0x7ffd8a5f16c0, to=0x7ffd8a5f1620, named_merge_points=0x0) at 
> xfaces.c:2168
> #11 0x00005600b6efc11b in lookup_derived_face (w=0x5600b8e523a0, 
> f=0x5600b8e52160, symbol=...,
> face_id=4, signal_p=false) at xfaces.c:5006
> #12 0x00005600b6df679f in handle_single_display_spec (it=0x7ffd8a5f3060, 
> spec=..., object=..., overlay=...,
> position=0x7ffd8a5f31b0, bufpos=7819, display_replaced=0, 
> frame_window_p=true, enable_eval_p=true) at
> xdisp.c:5825

Thanks, should be fixed now (on master).