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bug#34095: 27.0.50; Crash when openning a gnus message buffer


From: Katsumi Yamaoka
Subject: bug#34095: 27.0.50; Crash when openning a gnus message buffer
Date: Wed, 16 Jan 2019 16:41:51 +0900
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.91 (x86_64-unknown-cygwin)

In GNU Emacs 27.0.50 (build 1, x86_64-unknown-cygwin, GTK+ Version 3.22.28)
 of 2019-01-16 built on localhost
Windowing system distributor 'The Cygwin/X Project', version 11.0.12002000

Hi,

This may not be an Emacs bug, but I don't know how to solve it.
This is happenning since the last weekend.  Please help!

Recipe:
  With no .emacs .gnus.el .newsrc.eld files, and .config, Mail
  and News directories.
% emacs -Q
q
Eval: (setq gnus-select-method '(nnnil))
M-x gnus
(Gnus launches with no group)
m

Then Emacs crashes and I get either of the following two kinds
of errors in stderr:

1.
X protocol error: BadMatch (invalid parameter attributes) on protocol request 
139
When compiled with GTK, Emacs cannot recover from X disconnects.
This is a GTK bug: https://gitlab.gnome.org/GNOME/gtk/issues/221
For details, see etc/PROBLEMS.
Fatal error 6: Aborted

2.
(emacs:3360): Gdk-ERROR **: The program 'emacs' received an X Window System 
error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 7076 error_code 8 request_code 139 (RENDER) minor_code 4)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

xbacktrace and backtrace follow.  Thanks in advance.

GNU gdb (GDB) (Cygwin 8.0.1-1) 8.0.1
[...]
(gdb) source .gdbinit
[...]
(gdb) r
Starting program: /Work/emacs-27.0.50/src/emacs
[...]
(gdb) xbacktrace

Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x00000001005fd565 in backtrace_function ()
The program being debugged was signaled while in a function called from GDB.
GDB remains in the frame where the signal was received.
To change this behavior use "set unwindonsignal on".
Evaluation of the expression containing the function
(backtrace_function) will be abandoned.
When the function is done executing, GDB will silently stop.
(gdb) backtrace
#0  0x00000001005fd565 in backtrace_function ()
#1  <function called from gdb>
#2  _g_log_abort (address@hidden)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmessages.c:554
#3  0x00000003c5e67d90 in g_log_writer_default (log_level=6, 
    address@hidden, address@hidden, 
    address@hidden, address@hidden)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmessages.c:2628
#4  0x00000003c5e66660 in g_log_structured_array (
    address@hidden, 
    address@hidden, address@hidden)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmessages.c:1941
#5  0x00000003c5e67292 in g_log_structured_array (n_fields=6, 
    fields=0xffffabb0, log_level=G_LOG_LEVEL_ERROR)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmessages.c:1923
#6  g_log_structured (
    address@hidden <__func__.36842+198> "Gdk", 
    address@hidden)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmessages.c:1768
#7  0x00000003c81a9235 in _gdk_x11_display_error_event (
    address@hidden, address@hidden)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/x11/gdkdisplay-x11.c:2766
#8  0x00000003c81b6fc8 in gdk_x_error (xdisplay=0x60021bf10, error=0xffffb310)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/x11/gdkmain-x11.c:307
#9  0x00000003dff766cb in _XError (address@hidden, 
    address@hidden)
    at /usr/src/debug/libX11-1.6.5-1/src/XlibInt.c:1434
#10 0x00000003dff73533 in handle_error (dpy=0x60021bf10, err=0x601260e30, 
    in_XReply=<optimized out>)
    at /usr/src/debug/libX11-1.6.5-1/src/xcb_io.c:199
#11 0x00000003dff735e5 in handle_response (dpy=0x60021bf10, 
    response=0x601260e30, in_XReply=<optimized out>)
    at /usr/src/debug/libX11-1.6.5-1/src/xcb_io.c:311
#12 0x00000003dff74522 in _XReply (address@hidden, 
    address@hidden, address@hidden, address@hidden)
    at /usr/src/debug/libX11-1.6.5-1/src/xcb_io.c:621
#13 0x00000003dff5b5a8 in XGetWindowProperty (dpy=0x60021bf10, address@hidden, 
    property=262, address@hidden, 
    address@hidden, address@hidden, 
    address@hidden, address@hidden, 
    address@hidden, 
    address@hidden, address@hidden, 
    address@hidden)
    at /usr/src/debug/libX11-1.6.5-1/src/GetProp.c:69
#14 0x00000003c81b8dec in get_net_supporting_wm_check (
    address@hidden, window=788)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/x11/gdkscreen-x11.c:1329
#15 0x00000003c81b8ed3 in fetch_net_wm_check_window (
    address@hidden)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/x11/gdkscreen-x11.c:1366
#16 0x00000003c81ba613 in gdk_x11_screen_supports_net_wm_hint (
    screen=0x600230a90, address@hidden)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/x11/gdkscreen-x11.c:1446
#17 0x00000003c81bff24 in gdk_x11_window_end_frame (window=0x6001bd930)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/x11/gdkwindow-x11.c:435
#18 on_frame_clock_after_paint (clock=<optimized out>, window=0x6001bd930)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/x11/gdkwindow-x11.c:980
#19 0x00000003c36e5acc in g_closure_invoke (closure=0x6003cb890, 
    return_value=0x0, n_param_values=1, param_values=0xffffba80, 
    invocation_hint=0xffffb9c0)
    at /usr/src/debug/glib2.0-2.54.3-1/gobject/gclosure.c:804
#20 0x00000003c36f7657 in signal_emit_unlocked_R (address@hidden, 
    detail=<optimized out>, address@hidden, 
    address@hidden, 
    address@hidden)
    at /usr/src/debug/glib2.0-2.54.3-1/gobject/gsignal.c:3635
#21 0x00000003c36ff9cc in g_signal_emit_valist (
    address@hidden, signal_id=<optimized out>, 
    detail=<optimized out>, address@hidden, var_args=<optimized out>, 
    address@hidden "")
    at /usr/src/debug/glib2.0-2.54.3-1/gobject/gsignal.c:3391
#22 0x00000003c36ffcaa in g_signal_emit (address@hidden, 
    signal_id=<optimized out>, address@hidden)
    at /usr/src/debug/glib2.0-2.54.3-1/gobject/gsignal.c:3447
#23 0x00000003c8186fbe in _gdk_frame_clock_emit_after_paint (
    address@hidden)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/gdkframeclock.c:647
#24 0x00000003c81876fb in gdk_frame_clock_paint_idle (data=0x600309780)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/gdkframeclockidle.c:467
#25 0x00000003c8171417 in gdk_threads_dispatch (data=0x600b73a90, 
    address@hidden<error reading variable: value has been optimized out>)
    at /usr/src/debug/gtk3-3.22.28-1/gdk/gdk.c:743
#26 0x00000003c5e61033 in g_timeout_dispatch (source=0x600c0e880, 
    callback=<optimized out>, user_data=<optimized out>)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmain.c:4638
#27 0x00000003c5e6061e in g_main_dispatch (context=0x6002412f0)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmain.c:3165
#28 g_main_context_dispatch (address@hidden)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmain.c:3818
#29 0x00000003c5e60998 in g_main_context_iterate (
    address@hidden, address@hidden, 
    address@hidden, self=<optimized out>)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmain.c:3891
#30 0x00000003c5e60a4d in g_main_context_iteration (context=0x6002412f0, 
    address@hidden, address@hidden)
    at /usr/src/debug/glib2.0-2.54.3-1/glib/gmain.c:3952
#31 0x00000003c10287c5 in gtk_main_iteration ()
    at /usr/src/debug/gtk3-3.22.28-1/gtk/gtkmain.c:1427
#32 0x000000010051290a in XTread_socket ()
#33 0x000000010055ca71 in gobble_input ()
#34 0x000000010055c900 in get_input_pending ()
#35 0x000000010055766b in swallow_events ()
#36 0x000000010040db9d in sit_for ()
#37 0x000000010055445f in read_char ()
#38 0x0000000100561594 in read_key_sequence ()
#39 0x0000000100550a9f in command_loop_1 ()
#40 0x00000001005ffbcc in internal_condition_case ()
#41 0x0000000100550206 in command_loop_2 ()
#42 0x00000001005ff4b7 in internal_catch ()
#43 0x0000000100550196 in command_loop ()
#44 0x000000010054f728 in recursive_edit_1 ()
#45 0x000000010054f8d0 in Frecursive_edit ()
#46 0x000000010054d516 in main ()

Lisp Backtrace:

Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x00000001005fd565 in backtrace_function ()
The program being debugged was signaled while in a function called from GDB.
GDB remains in the frame where the signal was received.
To change this behavior use "set unwindonsignal on".
Evaluation of the expression containing the function
(backtrace_function) will be abandoned.
When the function is done executing, GDB will silently stop.





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