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* bug#45898: 27.1; wedged in redisplay again
@ 2021-01-15 18:13 Devon Sean McCullough
  2022-06-07 13:37 ` Lars Ingebrigtsen
  0 siblings, 1 reply; 76+ messages in thread
From: Devon Sean McCullough @ 2021-01-15 18:13 UTC (permalink / raw)
  To: 45898

An elisp expression output a bigger list than expected so I hit m-< and
went out for a walk.  After four hours of 99% CPU, lldb backtrace shows

main → Frecursive_edit → recursive_edit_1 → command_loop →
command_loop.cold.1 → internal_catch → command_loop_2 →
internal_condition_case → command_loop_1 → read_key_sequence → read_char
→ redisplay_internal → redisplay_windows → redisplay_windows →
internal_condition_case_1 → redisplay_window_0 → redisplay_window →
compute_window_start_on_continuation_line → move_it_to →
move_it_in_display_line_to → gui_produce_glyphs → macfont_encode_char

If lldb forces read_char to return Qnil or redisplay_internal to return,
will Emacs crash immediately or survive long enough to save all buffers
or better yet continue working?

Would calling Fgoto-char(Fpoint_min()) from the lldb break immediately 
corrupt or crash Emacs?

	Peace
		--Devon

P.S.  If there exists a way to quickly and safely abort redisplay,
perhaps there should be a hook invoked when repeated keyboard-quit
has no effect, allowing experimentation into workarounds for this
apparently intractable redisplay problem?





^ permalink raw reply	[flat|nested] 76+ messages in thread
[parent not found: <165605725704.24125.17210424600068379407@vcs2.savannah.gnu.org>]

end of thread, other threads:[~2022-07-01 15:43 UTC | newest]

Thread overview: 76+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-01-15 18:13 bug#45898: 27.1; wedged in redisplay again Devon Sean McCullough
2022-06-07 13:37 ` Lars Ingebrigtsen
2022-06-07 14:00   ` Eli Zaretskii
     [not found]     ` <b7f81bfc-bbfb-83bc-3660-d0b1474498f7@jovi.net>
2022-06-07 15:53       ` Eli Zaretskii
2022-06-08 11:47     ` Lars Ingebrigtsen
2022-06-08 14:08       ` Eli Zaretskii
2022-06-08 15:58         ` Eli Zaretskii
2022-06-09 10:30           ` Lars Ingebrigtsen
2022-06-09 10:45             ` Eli Zaretskii
2022-06-09 11:04               ` Lars Ingebrigtsen
2022-06-09 13:09                 ` Eli Zaretskii
2022-06-09 13:36                   ` Lars Ingebrigtsen
2022-06-09 15:56                     ` Eli Zaretskii
2022-06-10  9:02                       ` Lars Ingebrigtsen
2022-06-12  9:48                         ` Eli Zaretskii
2022-06-12 10:23                           ` Lars Ingebrigtsen
2022-06-12 14:23                             ` Eli Zaretskii
2022-06-12 18:02                               ` Eli Zaretskii
2022-06-13 12:10                               ` Lars Ingebrigtsen
2022-06-13 12:57                                 ` Eli Zaretskii
2022-06-13 22:40                                   ` Phil Sainty
2022-06-14 12:45                                     ` Eli Zaretskii
2022-06-18  8:01                                       ` Eli Zaretskii
2022-06-20 11:58                                         ` Eli Zaretskii
2022-06-20 19:11                                           ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-21 10:14                                             ` Eli Zaretskii
2022-06-21 20:38                                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-22  2:33                                           ` Eli Zaretskii
2022-06-22 23:39                                             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-23  6:08                                               ` Eli Zaretskii
2022-06-23 21:14                                                 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-24  7:57                                                   ` Eli Zaretskii
2022-06-25  4:54                                                     ` Gerd Möllmann
2022-06-25  6:29                                                       ` Eli Zaretskii
2022-06-25  7:47                                                         ` Eli Zaretskii
2022-06-25  8:18                                                           ` Gerd Möllmann
2022-06-25  9:49                                                         ` Gerd Möllmann
2022-06-25  9:57                                                           ` Eli Zaretskii
2022-06-25 11:10                                                             ` Gerd Möllmann
2022-06-25 11:29                                                               ` Eli Zaretskii
2022-06-25 12:20                                                                 ` Gerd Möllmann
2022-06-25 12:54                                                                   ` Eli Zaretskii
2022-06-25 12:57                                                                     ` Gerd Möllmann
2022-06-29 16:18                                                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-29 19:07                                                       ` Eli Zaretskii
2022-06-29 21:07                                                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-30  5:14                                                           ` Eli Zaretskii
2022-06-30 17:22                                                             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-30 18:35                                                               ` Eli Zaretskii
2022-06-30 19:56                                                                 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-01  4:42                                                                   ` Gerd Möllmann
2022-07-01  6:04                                                                     ` Eli Zaretskii
2022-07-01  8:49                                                                       ` Gerd Möllmann
2022-07-01 10:31                                                                         ` Eli Zaretskii
2022-07-01 11:04                                                                           ` Gerd Möllmann
2022-07-01 11:12                                                                             ` Eli Zaretskii
2022-07-01 11:33                                                                               ` Gerd Möllmann
2022-07-01 11:44                                                                       ` Gerd Möllmann
2022-07-01 12:35                                                                         ` Gerd Möllmann
2022-07-01 12:56                                                                           ` Eli Zaretskii
2022-07-01 12:39                                                                         ` Eli Zaretskii
2022-07-01  5:27                                                                   ` Eli Zaretskii
2022-07-01 12:14                                                                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-01 12:51                                                                       ` Eli Zaretskii
2022-07-01 14:38                                                                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-07-01 15:43                                                                           ` Eli Zaretskii
2022-06-14 12:00                                   ` Lars Ingebrigtsen
2022-06-14 13:00                                     ` Eli Zaretskii
2022-06-09 10:25         ` Lars Ingebrigtsen
2022-06-09 10:40           ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-09 10:41           ` Eli Zaretskii
2022-06-09 10:48             ` Lars Ingebrigtsen
2022-06-09 13:06               ` Eli Zaretskii
     [not found] <165605725704.24125.17210424600068379407@vcs2.savannah.gnu.org>
     [not found] ` <20220624075417.BFA82C0169C@vcs2.savannah.gnu.org>
     [not found]   ` <87wnd6v34k.fsf@gnus.org>
     [not found]     ` <83mte2coqg.fsf@gnu.org>
     [not found]       ` <87fsjuqpzi.fsf@gnus.org>
     [not found]         ` <83k096clsx.fsf@gnu.org>
     [not found]           ` <8735fup5oh.fsf@gnus.org>
     [not found]             ` <83a6a2cher.fsf@gnu.org>
     [not found]               ` <874k09nau4.fsf@gnus.org>
2022-06-25  7:17                 ` Eli Zaretskii
2022-06-25 10:10                   ` Lars Ingebrigtsen
2022-06-25 11:21                     ` Eli Zaretskii

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