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bug#43973: 28.0.50; [NS] Two crashes on macOS
From: |
Andrii Kolomoiets |
Subject: |
bug#43973: 28.0.50; [NS] Two crashes on macOS |
Date: |
Tue, 13 Oct 2020 10:35:28 +0300 |
Update to recent trunk brought me everyone's favorite random crashes.
In an attempt to find the recipe for reproduce the bug somehow, I spot
two crashes that I actually can reproduce in 'emacs -Q'.
The first one is more "stable":
With this code in scratch and point at '|':
(make-frame `((parent-frame . ,(selected-frame))
(width . 0.5)
(height . 0.5)
(top . 0.5)
(left . 0.5)))|
1. C-x C-e
2. s-w
Repeating these two steps 3-5 times leads to crash. Most of the time
the only meaningfull record in the 'bt' is:
Thread 3 received signal SIGSEGV, Segmentation fault.
0x00007fff6fa97678 in ?? ()
(gdb) bt full
#0 0x00007fff6fa97678 in ?? ()
No symbol table info available.
#1 0x0000000100476338 in -[EmacsImage dealloc] (self=0x1014c77f0,
_cmd=0x7fff7afcdc58) at nsimage.m:286
No locals.
It may be tool bar related, because Emacs is not crashing with
tool-bar-mode turned of.
The second one is not reproducible every time:
1. M-x tool-bar-mode
2. Evaluate
(let ((params `((parent-frame . ,(selected-frame))
(undecorated . t))))
(dotimes (_z 100)
(set-face-background 'internal-border "black"
(make-frame params))))
3. Move the frame
Thread 3 received signal SIGSEGV, Segmentation fault.
0x0000000100456e88 in ns_clear_under_internal_border (f=0x13cedafe8) at
nsterm.m:3052
3052 [ns_lookup_indexed_color (NS_FACE_BACKGROUND (face), f) set];
(gdb) bt full
#0 0x0000000100456e88 in ns_clear_under_internal_border (f=0x13cedafe8) at
nsterm.m:3052
frame_rect = {origin = {x = 0, y = 0}, size = {width = 595, height =
508}}
face_id = 15
border_width = 2
view = 0x10bfb2b70
edge_rect = {origin = {x = 0, y = 6.9529314086768113e-310}, size =
{width = 2.6133677750952917e-314,
height = 2.6133668897296544e-314}}
edge = {NSRectEdgeMinX, NSRectEdgeMinY, NSRectEdgeMaxX, NSRectEdgeMaxY}
face = 0x0
#1 0x0000000100067b8d in redisplay_internal () at xdisp.c:16014
gcscrollbars = false
f_redisplay_flag = false
f = 0x13cedafe8
w = 0x105046430
sw = 0x105046430
fr = 0x10503b430
pending = false
must_finish = true
match_p = true
tlbufpos = {charpos = 304, bytepos = 304}
tlendpos = {charpos = 0, bytepos = 0}
number_of_visible_frames = 101
count = 3
sf = 0x10503b430
polling_stopped_here = true
tail = {i = 0x102227d93}
frame = {i = 0x13cedafed}
hscroll_retries = 0
garbaged_frame_retries = 0
consider_all_windows_p = true
update_miniwindow_p = false
#2 0x000000010006ceb9 in redisplay () at xdisp.c:15159
No locals.
(Just for the record: in my usual workflow I don't create that much
child frames)
Thanks! And hope Emacs is crashing on your side too ;)
In GNU Emacs 28.0.50 (build 3, x86_64-apple-darwin19.6.0, NS appkit-1894.60
Version 10.15.6 (Build 19G2021))
Windowing system distributor 'Apple', version 10.3.1894
System Description: Mac OS X 10.15.6
Configured using:
'configure --enable-checking=yes,glyphs --enable-check-lisp-object-type
'CFLAGS=-O0 -g3''
- bug#43973: 28.0.50; [NS] Two crashes on macOS,
Andrii Kolomoiets <=