Package: emacs-gtk
Version: 1:27.1+1-3.1+deb11u2
Severity: important
File: /usr/bin/emacs-gtk
X-Debbugs-Cc: em...@unbit.co.uk
Dear Maintainer,
* What led up to the situation?
Using Debian 11.7 with the provided package for Emacs 27.1, performing
M-x vc-revert on a changed file caused a segfault. I've managed to
find the following to reproduce it which uses the Emacs Git repository
along with the source file that needs to be patched to resolve it.
src/emacs -Q src/xdisp.c --eval "(add-to-list 'display-buffer-alist (list \".\"
'display-buffer-same-window))" -f global-display-line-numbers-mode
Apply the patch below, or make any change for testing
M-x vc-revert
* What exactly did you do (or not do) that was effective (or
ineffective)?
This is fixed upstream since 27.2 and has other ways of causing the
segfault - see https://debbugs.gnu.org/cgi/bugreport.cgi?bug=44111
I've reproduced this using a Git or Mercurial repository and other VC's
may be affected as it seems a general Emacs issue with line numbers.
Manually applying the fix from the upstream bug (commit
e29cace60afdab04ff20c4f4043a3ee64ec9d01d) also fixes the issue.
* What was the outcome of this action?
Segfault.
* What outcome did you expect instead?
Show the *vc-diff* buffer with the changes to be reverted.
This is resolved by applying the upstream commit.
Emacs 27.2 and later releases are unaffected.
* Extra information
I've reproduced this
- in a TTY and in a GTK session with the provided package
- ditto with a manual build from source. tag emacs-27.1
./configure --without-all CFLAGS='-g -O0'
gdb backtrace
0 0x000055555592f1bd in face_for_char (f=0x555555efd120, face=0x0, c=0,
pos=-1, object=0x0) at fontset.c:929
1 0x00005555555b2d03 in FACE_FOR_CHAR (f=0x555555efd120, face=0x0,
character=0, pos=-1, object=0x0) at dispextern.h:1891
2 0x00005555555f20d8 in append_space_for_newline (it=0x7fffffff6730,
default_face_p=false) at xdisp.c:21640
3 0x00005555555f9521 in display_line (it=0x7fffffff6730, cursor_vpos=0) at
xdisp.c:23674
4 0x00005555555eb34f in try_window (window=0x555555efd385, pos=..., flags=1)
at xdisp.c:19182
5 0x00005555555e8ae7 in redisplay_window (window=0x555555efd385,
just_this_one_p=false) at xdisp.c:18600
6 0x00005555555e1b83 in redisplay_window_0 (window=0x555555efd385) at
xdisp.c:16314
7 0x00005555558512ed in internal_condition_case_1 (bfun=0x5555555e1b41
<redisplay_window_0>, arg=0x555555efd385, handlers=0x7ffff6ce74fb,
hfun=0x5555555e1b09 <redisplay_window_error>) at eval.c:1380
8 0x00005555555e1adf in redisplay_windows (window=0x555555efd385) at
xdisp.c:16294
9 0x00005555555e0a0a in redisplay_internal () at xdisp.c:15762
10 0x00005555555dedd6 in redisplay () at xdisp.c:14989
11 0x00005555557383ea in read_char (commandflag=1, map=0x5555564c2f53,
prev_event=0x0, used_mouse_menu=0x7fffffffbb4f, end_time=0x0) at keyboard.c:2493
12 0x00005555557471a0 in read_key_sequence (keybuf=0x7fffffffbd50, prompt=0x0,
dont_downcase_last=false, can_return_switch_frame=true,
fix_current_buffer=true, prevent_redisplay=false) at keyboard.c:9553
13 0x0000555555735575 in command_loop_1 () at keyboard.c:1350
14 0x0000555555851246 in internal_condition_case (bfun=0x55555573512f
<command_loop_1>, handlers=0x90, hfun=0x5555557348cb <cmd_error>) at eval.c:1356
15 0x0000555555734df7 in command_loop_2 (ignore=0x0) at keyboard.c:1091
16 0x0000555555850afb in internal_catch (tag=0x51f0, func=0x555555734dca
<command_loop_2>, arg=0x0) at eval.c:1117
17 0x0000555555734d26 in command_loop () at keyboard.c:1062
18 0x000055555573449c in recursive_edit_1 () at keyboard.c:714de
19 0x000055555579c602 in read_minibuf (map=0x7ffff6b25e3b, initial=0x0,
prompt=0x5555563f62e4, expflag=false, histvar=0xe340, histpos=0x2, defalt=0x0,
allow_props=false, inherit_input_method=false) at minibuf.c:664
20 0x000055555579cf6c in Fread_from_minibuffer (prompt=0x5555563f62e4,
initial_contents=0x0, keymap=0x7ffff6b25e3b, read=0x0, hist=0xe340,
default_value=0x0, inherit_input_method=0x0) at minibuf.c:942
21 0x000055555586923c in Fyes_or_no_p (prompt=0x5555563f62e4) at fns.c:2813
22 0x0000555555854d6b in funcall_subr (subr=0x555555e4dae0 <Syes_or_no_p>,
numargs=1, args=0x7fffffffc400) at eval.c:2868
23 0x000055555585497f in Ffuncall (nargs=2, args=0x7fffffffc3f8) at eval.c:2795
24 0x00005555558b76c7 in exec_byte_code (bytestr=0x555556414244,
vector=0x5555563d3675, maxdepth=0x3a, args_template=0x2, nargs=0,
args=0x7fffffffcb60) at bytecode.c:633
25 0x00005555558553e5 in funcall_lambda (fun=0x55555640dfc5, nargs=0,
arg_vector=0x7fffffffcb60) at eval.c:2990
26 0x00005555558549c3 in Ffuncall (nargs=1, args=0x7fffffffcb58) at eval.c:2797
27 0x00005555558477ca in Ffuncall_interactively (nargs=1, args=0x7fffffffcb58)
at callint.c:254
28 0x0000555555854c91 in funcall_subr (subr=0x555555e4ba20
<Sfuncall_interactively>, numargs=1, args=0x7fffffffcb58) at eval.c:2848
29 0x000055555585497f in Ffuncall (nargs=2, args=0x7fffffffcb50) at eval.c:2795
30 0x00005555558538fb in Fapply (nargs=3, args=0x7fffffffcb50) at eval.c:2378
31 0x0000555555847b83 in Fcall_interactively (function=0x2aaaa0d5fbf0,
record_flag=0xa7a0, keys=0x5555563135f5) at callint.c:342
32 0x0000555555854dc5 in funcall_subr (subr=0x555555e4ba60
<Scall_interactively>, numargs=3, args=0x7fffffffcef0) at eval.c:2873
33 0x000055555585497f in Ffuncall (nargs=4, args=0x7fffffffcee8) at eval.c:2795
34 0x00005555558b76c7 in exec_byte_code (bytestr=0x7ffff6bd363c,
vector=0x7ffff6bd3165, maxdepth=0x36, args_template=0x1006, nargs=2,
args=0x7fffffffd458) at bytecode.c:633
35 0x00005555558553e5 in funcall_lambda (fun=0x7ffff6bd3135, nargs=2,
arg_vector=0x7fffffffd448) at eval.c:2990
36 0x00005555558549c3 in Ffuncall (nargs=3, args=0x7fffffffd440) at eval.c:2797
37 0x00005555558b76c7 in exec_byte_code (bytestr=0x7ffff6b84ea4,
vector=0x7ffff6b849a5, maxdepth=0x3e, args_template=0xc06, nargs=3,
args=0x7fffffffdb68) at bytecode.c:633
38 0x00005555558553e5 in funcall_lambda (fun=0x7ffff6b8381d, nargs=3,
arg_vector=0x7fffffffdb50) at eval.c:2990
39 0x00005555558549c3 in Ffuncall (nargs=4, args=0x7fffffffdb48) at eval.c:2797
40 0x00005555558477ca in Ffuncall_interactively (nargs=4, args=0x7fffffffdb48)
at callint.c:254
41 0x0000555555854c91 in funcall_subr (subr=0x555555e4ba20
<Sfuncall_interactively>, numargs=4, args=0x7fffffffdb48) at eval.c:2848
42 0x000055555585497f in Ffuncall (nargs=5, args=0x7fffffffdb40) at eval.c:2795
43 0x0000555555853c9c in Fapply (nargs=3, args=0x7fffffffdc10) at eval.c:2425
44 0x0000555555847b83 in Fcall_interactively (function=0x2aaaa0cd4308,
record_flag=0x0, keys=0x55555611f745) at callint.c:342
45 0x0000555555854dc5 in funcall_subr (subr=0x555555e4ba60
<Scall_interactively>, numargs=3, args=0x7fffffffdfb0) at eval.c:2873
46 0x000055555585497f in Ffuncall (nargs=4, args=0x7fffffffdfa8) at eval.c:2795
47 0x00005555558b76c7 in exec_byte_code (bytestr=0x7ffff6bd363c,
vector=0x7ffff6bd3165, maxdepth=0x36, args_template=0x1006, nargs=1,
args=0x7fffffffe4f0) at bytecode.c:633
48 0x00005555558553e5 in funcall_lambda (fun=0x7ffff6bd3135, nargs=1,
arg_vector=0x7fffffffe4e8) at eval.c:2990
49 0x00005555558549c3 in Ffuncall (nargs=2, args=0x7fffffffe4e0) at eval.c:2797
50 0x0000555555854258 in call1 (fn=0x3ae0, arg1=0x2aaaa0cd4308) at eval.c:2655
51 0x0000555555735913 in command_loop_1 () at keyboard.c:1463
52 0x0000555555851246 in internal_condition_case (bfun=0x55555573512f
<command_loop_1>, handlers=0x90, hfun=0x5555557348cb <cmd_error>) at eval.c:1356
53 0x0000555555734df7 in command_loop_2 (ignore=0x0) at keyboard.c:1091
54 0x0000555555850afb in internal_catch (tag=0xc510, func=0x555555734dca
<command_loop_2>, arg=0x0) at eval.c:1117
55 0x0000555555734d96 in command_loop () at keyboard.c:1070 |
56 0x000055555573449c in recursive_edit_1 () at keyboard.c:714
57 0x000055555573461f in Frecursive_edit () at keyboard.c:786
58 0x000055555572cc6a in main (argc=1, argv=0x7fffffffea08) at emacs.c:2062 EC
[B] Abbrev)
-- System Information:
Debian Release: 11.7
APT prefers oldstable-updates
APT policy: (500, 'oldstable-updates'), (500, 'oldstable-security'), (500,
'oldstable')
Architecture: amd64 (x86_64)
Kernel: Linux 5.10.0-23-amd64 (SMP w/1 CPU thread)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages emacs-gtk depends on:
ii emacs-bin-common 1:27.1+1-3.1+deb11u2
ii emacs-common 1:27.1+1-3.1+deb11u2
ii libacl1 2.2.53-10
ii libasound2 1.2.4-1.1
ii libc6 2.31-13+deb11u6
ii libcairo2 1.16.0-5
ii libdbus-1-3 1.12.24-0+deb11u1
ii libfontconfig1 2.13.1-4.2
ii libfreetype6 2.10.4+dfsg-1+deb11u1
ii libgdk-pixbuf-2.0-0 2.42.2+dfsg-1+deb11u1
ii libgif7 5.1.9-2
ii libglib2.0-0 2.66.8-1
ii libgmp10 2:6.2.1+dfsg-1+deb11u1
ii libgnutls30 3.7.1-5+deb11u3
ii libgpm2 1.20.7-8
ii libgtk-3-0 3.24.24-4+deb11u3
ii libharfbuzz0b 2.7.4-1
ii libice6 2:1.0.10-1
ii libjansson4 2.13.1-1.1
ii libjpeg62-turbo 1:2.0.6-4
ii liblcms2-2 2.12~rc1-2
ii libm17n-0 1.8.0-2
ii libotf0 0.9.13-7
ii libpango-1.0-0 1.46.2-3
ii libpng16-16 1.6.37-3
ii librsvg2-2 2.50.3+dfsg-1
ii libselinux1 3.1-3
ii libsm6 2:1.2.3-1
ii libsystemd0 247.3-7+deb11u2
ii libtiff5 4.2.0-1+deb11u4
ii libtinfo6 6.2+20201114-2+deb11u1
ii libx11-6 2:1.7.2-1
ii libxext6 2:1.3.3-1.1
ii libxfixes3 1:5.0.3-2
ii libxml2 2.9.10+dfsg-6.7+deb11u4
ii libxrender1 1:0.9.10-1
ii zlib1g 1:1.2.11.dfsg-2+deb11u2
emacs-gtk recommends no packages.
Versions of packages emacs-gtk suggests:
pn emacs-common-non-dfsg <none>
-- no debconf information
