GNU bug report logs - #44448
27.1; Strange inteference between timer, modeline/header-line and buffer position in window

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From: Amai Kinono <amaikinono <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 44448 <at> debbugs.gnu.org
Subject: bug#44448: Fwd: bug#44448:
Date: Sat, 4 Dec 2021 14:13:09 +0800

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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
#13 0x00005600b6df4858 in handle_display_spec (it=0x7ffd8a5f3060, spec=...,
object=..., overlay=..., position=0x7ffd8a5f31b0, bufpos=7819,
frame_window_p=true) at xdisp.c:5472
#14 0x00005600b6df3ff8 in handle_display_prop (it=0x7ffd8a5f3060) at
xdisp.c:5380
#15 0x00005600b6def7ab in handle_stop (it=0x7ffd8a5f3060) at xdisp.c:3879
#16 0x00005600b6e00d65 in next_element_from_buffer (it=0x7ffd8a5f3060) at
xdisp.c:9126
#17 0x00005600b6dfce4c in get_next_display_element (it=0x7ffd8a5f3060) at
xdisp.c:7713
#18 0x00005600b6e3405f in display_line (it=0x7ffd8a5f3060, cursor_vpos=21)
at xdisp.c:23907
#19 0x00005600b6e2437d in try_window (window=..., pos=..., flags=1) at
xdisp.c:19811
#20 0x00005600b6e20f58 in redisplay_window (window=...,
just_this_one_p=false) at xdisp.c:19218
#21 0x00005600b6e181e9 in redisplay_window_0 (window=...) at xdisp.c:16929
#22 0x00005600b7049210 in internal_condition_case_1 (bfun=0x5600b6e181a3
<redisplay_window_0>, arg=..., handlers=..., hfun=0x5600b6e18167
<redisplay_window_error>) at eval.c:1516
#23 0x00005600b6e18138 in redisplay_windows (window=...) at xdisp.c:16909
#24 0x00005600b6e180ea in redisplay_windows (window=...) at xdisp.c:16903
#25 0x00005600b6e16a6c in redisplay_internal () at xdisp.c:16377
#26 0x00005600b6e178bc in redisplay_preserve_echo_area (from_where=8) at
xdisp.c:16730
#27 0x00005600b6f7d53b in detect_input_pending_run_timers (do_display=true)
at keyboard.c:10457
#28 0x00005600b70c25ed in wait_reading_process_output (time_limit=30,
nsecs=0, read_kbd=-1, do_display=true, wait_for_cell=..., wait_proc=0x0,
just_wait_proc=0) at process.c:5697
#29 0x00005600b6dc379c in sit_for (timeout=..., reading=true,
display_option=1) at dispnew.c:6154
#30 0x00005600b6f681d8 in read_char (commandflag=1, map=...,
prev_event=..., used_mouse_menu=0x7ffd8a5f88ed, end_time=0x0) at
keyboard.c:2801
#31 0x00005600b6f7b417 in read_key_sequence (keybuf=0x7ffd8a5f8ad0,
prompt=..., dont_downcase_last=false, can_return_switch_frame=true,
fix_current_buffer=true, prevent_redisplay=false) at keyboard.c:9631
#32 0x00005600b6f6384f in command_loop_1 () at keyboard.c:1393
#33 0x00005600b704912d in internal_condition_case (bfun=0x5600b6f633b1
<command_loop_1>, handlers=..., hfun=0x5600b6f627c2 <cmd_error>) at
eval.c:1492
#34 0x00005600b6f62f72 in command_loop_2 (handlers=...) at keyboard.c:1134
#35 0x00005600b70482cc in internal_catch (tag=..., func=0x5600b6f62f47
<command_loop_2>, arg=...) at eval.c:1223
#36 0x00005600b6f62f12 in command_loop () at keyboard.c:1112
#37 0x00005600b6f6226d in recursive_edit_1 () at keyboard.c:721
#38 0x00005600b6f62489 in Frecursive_edit () at keyboard.c:804
#39 0x00005600b6f5e035 in main (argc=1, argv=0x7ffd8a5f8f48) at emacs.c:2409

It happens when the cursor in one window is on an overlay created by
flycheck-mode, and I press C-g in another window.

Eli Zaretskii <eliz <at> gnu.org> 于2021年8月18日周三 23:47写道：

> > From: Amai Kinono <amaikinono <at> gmail.com>
> > Date: Wed, 18 Aug 2021 22:00:57 +0800
> > Cc: 44448 <at> debbugs.gnu.org
> >
> > Thanks! From what I can tell, the bug is gone. I've been programming in
> Emacs for a while and haven't
> > encountered it.
>
> Thanks, I'm therefore closing the bug.  If you find another
> occurrence, please reopen with the relevant data.
>

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