bug#41239: GTK builds crashing in XTread_socket after deleting a frame

[martin rudalics]

This looks like yet another GTK specific crash where we apparently can't
do much.  But maybe someone can spot a pattern we could employ to avoid
the XTread_socket calls when deleting a frame.  Otherwise, we probably
should mention this in PROBLEMS.

Recipe with emacs -Q (here on Debian 10 with various master and release
builds):

C-x 5 2

Move the mouse to some sensitive part of the mode line in either of the
frames such that a GTK tooltip pops up.  Make sure the tooltip doesn't
disappear.

Type Alt-F4.

This gets me backtraces like the ones listed below.  In addition, I am told

(emacs:3116): GLib-CRITICAL **: 19:00:56.620: Source ID 1394 was not found when 
attempting to remove it

martin


Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x00007ffff56aeb71 in _int_malloc (av=av@entry=0x7ffff57e3c40 <main_arena>, 
bytes=bytes@entry=16) at malloc.c:3620
3620    malloc.c: Datei oder Verzeichnis nicht gefunden.
(gdb) bt
#0  0x00007ffff56aeb71 in _int_malloc (av=av@entry=0x7ffff57e3c40 <main_arena>, 
bytes=bytes@entry=16) at malloc.c:3620
#1  0x00007ffff56b0877 in __GI___libc_malloc (bytes=16) at malloc.c:3073
#2  0x00007ffff66533ff in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007ffff6653958 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007ffff66b65ee in  () at /lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007ffff66b6760 in  () at /lib/x86_64-linux-gnu/libX11.so.6
#6  0x00007ffff66b6a5d in _XEventsQueued () at /lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007ffff66a87b7 in XPending () at /lib/x86_64-linux-gnu/libX11.so.6
#8  0x00007ffff6f5220d in  () at /lib/x86_64-linux-gnu/libgdk-3.so.0
#9  0x00007ffff6a2b669 in g_main_context_prepare () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff6a2c06b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ffff6a2c207 in g_main_context_pending () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ffff7220b9d in gtk_events_pending () at 
/lib/x86_64-linux-gnu/libgtk-3.so.0
#13 0x000000000071dda2 in XTread_socket (terminal=0xf0b6d0, 
hold_quit=0x7fffffffc4c0) at ../../src/xterm.c:9402
#14 0x0000000000778e85 in gobble_input () at ../../src/keyboard.c:6885
#15 0x0000000000779365 in handle_async_input () at ../../src/keyboard.c:7122
#16 0x0000000000779384 in process_pending_signals () at 
../../src/keyboard.c:7136
#17 0x0000000000841b43 in maybe_quit () at ../../src/eval.c:1545
#18 0x0000000000789da3 in access_keymap_1 (map=XIL(0x7ffff3d6de63), 
idx=XIL(0x9390), t_ok=true, noinherit=false, autoload=true) at 
../../src/keymap.c:522
#19 0x0000000000789ea6 in access_keymap (map=XIL(0x7ffff3d6de63), 
idx=XIL(0x9390), t_ok=true, noinherit=false, autoload=true) at 
../../src/keymap.c:533
#20 0x0000000000779c8d in menu_bar_items (old=XIL(0x1a5d555)) at 
../../src/keyboard.c:7477
#21 0x00000000004a6307 in update_menu_bar (f=0x1300c40, save_match_data=false, 
hooks_run=true) at ../../src/xdisp.c:12681
#22 0x00000000004a5e77 in prepare_menu_bars () at ../../src/xdisp.c:12578
#23 0x00000000004aaf20 in redisplay_internal () at ../../src/xdisp.c:15392
#24 0x00000000004acdf6 in redisplay_preserve_echo_area (from_where=5) at 
../../src/xdisp.c:16102
#25 0x000000000076905a in read_char (commandflag=1, map=XIL(0x128a083), 
prev_event=XIL(0), used_mouse_menu=0x7fffffffe13f, end_time=0x0) at 
../../src/keyboard.c:2491
#26 0x000000000078028e in read_key_sequence (keybuf=0x7fffffffe2d0, 
prompt=XIL(0), dont_downcase_last=false, can_return_switch_frame=true, 
fix_current_buffer=true, prevent_redisplay=false) at ../../src/keyboard.c:9547
#27 0x0000000000765645 in command_loop_1 () at ../../src/keyboard.c:1350
#28 0x00000000008414e8 in internal_condition_case (bfun=0x7651c9 <command_loop_1>, 
handlers=XIL(0x90), hfun=0x7647d8 <cmd_error>) at ../../src/eval.c:1355
#29 0x0000000000764dae in command_loop_2 (ignore=XIL(0)) at 
../../src/keyboard.c:1091
#30 0x000000000084099c in internal_catch (tag=XIL(0xd200), func=0x764d81 
<command_loop_2>, arg=XIL(0)) at ../../src/eval.c:1116
#31 0x0000000000764d4c in command_loop () at ../../src/keyboard.c:1070
#32 0x00000000007642bf in recursive_edit_1 () at ../../src/keyboard.c:714
#33 0x00000000007644b7 in Frecursive_edit () at ../../src/keyboard.c:786
#34 0x000000000076063a in main (argc=2, argv=0x7fffffffe7c8) at 
../../src/emacs.c:2035

Lisp Backtrace:
"redisplay_internal (C function)" (0x0)
(gdb)

-----

Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x00007ffff56aeb71 in _int_malloc (av=av@entry=0x7ffff57e3c40 <main_arena>, 
bytes=bytes@entry=16) at malloc.c:3620
3620    malloc.c: Datei oder Verzeichnis nicht gefunden.
(gdb) bt
#0  0x00007ffff56aeb71 in _int_malloc (av=av@entry=0x7ffff57e3c40 <main_arena>, 
bytes=bytes@entry=16) at malloc.c:3620
#1  0x00007ffff56b0877 in __GI___libc_malloc (bytes=16) at malloc.c:3073
#2  0x00007ffff66533ff in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007ffff6653958 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007ffff66b65ee in  () at /lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007ffff66b6760 in  () at /lib/x86_64-linux-gnu/libX11.so.6
#6  0x00007ffff66b6a5d in _XEventsQueued () at /lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007ffff66a87b7 in XPending () at /lib/x86_64-linux-gnu/libX11.so.6
#8  0x00007ffff6f5220d in  () at /lib/x86_64-linux-gnu/libgdk-3.so.0
#9  0x00007ffff6a2b669 in g_main_context_prepare () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff6a2c06b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ffff6a2c207 in g_main_context_pending () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ffff7220b9d in gtk_events_pending () at 
/lib/x86_64-linux-gnu/libgtk-3.so.0
#13 0x000000000071dda2 in XTread_socket (terminal=0xf0b6d0, 
hold_quit=0x7fffffffafa0) at ../../src/xterm.c:9402
#14 0x0000000000778e85 in gobble_input () at ../../src/keyboard.c:6885
#15 0x0000000000779365 in handle_async_input () at ../../src/keyboard.c:7122
#16 0x0000000000779384 in process_pending_signals () at 
../../src/keyboard.c:7136
#17 0x0000000000841b43 in maybe_quit () at ../../src/eval.c:1545
#18 0x00000000008453aa in Ffuncall (nargs=2, args=0x7fffffffb0f0) at 
../../src/eval.c:2766
#19 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3cd2534), 
vector=XIL(0x7ffff3cd2515), maxdepth=make_fixnum(4), 
args_template=make_fixnum(256), nargs=1, args=0x7fffffffb5a0) at 
../../src/bytecode.c:633
#20 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3cd24e5), nargs=1, 
arg_vector=0x7fffffffb598) at ../../src/eval.c:2989
#21 0x0000000000845548 in Ffuncall (nargs=2, args=0x7fffffffb590) at 
../../src/eval.c:2796
#22 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3cf2c54), 
vector=XIL(0x7ffff3cf2c3d), maxdepth=make_fixnum(3), 
args_template=make_fixnum(256), nargs=1, args=0x7fffffffba30) at 
../../src/bytecode.c:633
#23 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3cf2c0d), nargs=1, 
arg_vector=0x7fffffffba28) at ../../src/eval.c:2989
#24 0x0000000000845548 in Ffuncall (nargs=2, args=0x7fffffffba20) at 
../../src/eval.c:2796
#25 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3fc2c94), 
vector=XIL(0x7ffff3fc2b0d), maxdepth=make_fixnum(5), 
args_template=make_fixnum(0), nargs=0, args=0x7fffffffbed0) at 
../../src/bytecode.c:633
#26 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3fc2add), nargs=0, 
arg_vector=0x7fffffffbed0) at ../../src/eval.c:2989
#27 0x0000000000845548 in Ffuncall (nargs=1, args=0x7fffffffbec8) at 
../../src/eval.c:2796
#28 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3fc2e44), 
vector=XIL(0x7ffff3d999c5), maxdepth=make_fixnum(4), 
args_template=make_fixnum(0), nargs=0, args=0x7fffffffc378) at 
../../src/bytecode.c:633
#29 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3d99995), nargs=0, 
arg_vector=0x7fffffffc378) at ../../src/eval.c:2989
#30 0x0000000000845548 in Ffuncall (nargs=1, args=0x7fffffffc370) at 
../../src/eval.c:2796
#31 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3debd04), 
vector=XIL(0x7ffff3debced), maxdepth=make_fixnum(2), 
args_template=make_fixnum(256), nargs=1, args=0x7fffffffc9f8) at 
../../src/bytecode.c:633
#32 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3debcbd), nargs=1, 
arg_vector=0x7fffffffc9f0) at ../../src/eval.c:2989
#33 0x0000000000845548 in Ffuncall (nargs=2, args=0x7fffffffc9e8) at 
../../src/eval.c:2796
#34 0x000000000084477d in funcall_nil (nargs=2, args=0x7fffffffc9e8) at 
../../src/eval.c:2435
#35 0x0000000000844ca7 in run_hook_with_args (nargs=2, args=0x7fffffffc9e8, 
funcall=0x84475a <funcall_nil>) at ../../src/eval.c:2612
#36 0x0000000000844803 in Frun_hook_with_args (nargs=2, args=0x7fffffffc9e8) at 
../../src/eval.c:2477
#37 0x000000000084592e in funcall_subr (subr=0xe0f180 <Srun_hook_with_args>, 
numargs=2, args=0x7fffffffc9e8) at ../../src/eval.c:2847
#38 0x0000000000845504 in Ffuncall (nargs=3, args=0x7fffffffc9e0) at 
../../src/eval.c:2794
#39 0x0000000000841797 in internal_condition_case_n (bfun=0x845388 <Ffuncall>, 
nargs=3, args=0x7fffffffc9e0, handlers=XIL(0x30), hfun=0x481a69 <safe_eval_handler>) 
at ../../src/eval.c:1435
#40 0x0000000000481cbc in safe__call (inhibit_quit=false, nargs=3, 
func=XIL(0xb9a0), ap=0x7fffffffca90) at ../../src/xdisp.c:2820
#41 0x0000000000481d8d in safe_call (nargs=3, func=XIL(0xb9a0)) at 
../../src/xdisp.c:2835
#42 0x0000000000481f1e in safe_call2 (fn=XIL(0xb9a0), arg1=XIL(0x2940), 
arg2=XIL(0x125cc05)) at ../../src/xdisp.c:2879
#43 0x000000000043458a in delete_frame (frame=XIL(0x125cc05), force=XIL(0x30)) 
at ../../src/frame.c:2268
#44 0x0000000000434859 in Fdelete_frame (frame=XIL(0x125cc05), force=XIL(0x30)) 
at ../../src/frame.c:2326
#45 0x0000000000845a5b in funcall_subr (subr=0xe01200 <Sdelete_frame>, 
numargs=2, args=0x7fffffffcdf0) at ../../src/eval.c:2869
#46 0x0000000000845504 in Ffuncall (nargs=3, args=0x7fffffffcde8) at 
../../src/eval.c:2794
#47 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3fe33a4), 
vector=XIL(0x7ffff3d6e68d), maxdepth=make_fixnum(7), 
args_template=make_fixnum(257), nargs=1, args=0x7fffffffd3f8) at 
../../src/bytecode.c:633
#48 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3d6e655), nargs=1, 
arg_vector=0x7fffffffd3f0) at ../../src/eval.c:2989
#49 0x0000000000845548 in Ffuncall (nargs=2, args=0x7fffffffd3e8) at 
../../src/eval.c:2796
#50 0x0000000000839ba8 in Ffuncall_interactively (nargs=2, args=0x7fffffffd3e8) 
at ../../src/callint.c:254
#51 0x000000000084592e in funcall_subr (subr=0xe0e900 <Sfuncall_interactively>, 
numargs=2, args=0x7fffffffd3e8) at ../../src/eval.c:2847
#52 0x0000000000845504 in Ffuncall (nargs=3, args=0x7fffffffd3e0) at 
../../src/eval.c:2794
#53 0x000000000083c20f in Fcall_interactively (function=XIL(0x7ffff2eebd40), 
record_flag=XIL(0), keys=XIL(0x200a9d5)) at ../../src/callint.c:783
#54 0x0000000000845a87 in funcall_subr (subr=0xe0e940 <Scall_interactively>, 
numargs=3, args=0x7fffffffd7c0) at ../../src/eval.c:2872
#55 0x0000000000845504 in Ffuncall (nargs=4, args=0x7fffffffd7b8) at 
../../src/eval.c:2794
#56 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3e1e284), 
vector=XIL(0x7ffff3e1dda5), maxdepth=make_fixnum(13), 
args_template=make_fixnum(1025), nargs=4, args=0x7fffffffdd38) at 
../../src/bytecode.c:633
#57 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3e1dd75), nargs=4, 
arg_vector=0x7fffffffdd18) at ../../src/eval.c:2989
#58 0x0000000000845548 in Ffuncall (nargs=5, args=0x7fffffffdd10) at 
../../src/eval.c:2796
#59 0x0000000000844f15 in call4 (fn=XIL(0x41a0), arg1=XIL(0x7ffff2eebd40), 
arg2=XIL(0), arg3=XIL(0x200a9d5), arg4=XIL(0x30)) at ../../src/eval.c:2676
#60 0x000000000076a5f0 in read_char (commandflag=1, map=XIL(0x1fef813), 
prev_event=XIL(0), used_mouse_menu=0x7fffffffe13f, end_time=0x0) at 
../../src/keyboard.c:2882
#61 0x000000000078028e in read_key_sequence (keybuf=0x7fffffffe2d0, 
prompt=XIL(0), dont_downcase_last=false, can_return_switch_frame=true, 
fix_current_buffer=true, prevent_redisplay=false) at ../../src/keyboard.c:9547
#62 0x0000000000765645 in command_loop_1 () at ../../src/keyboard.c:1350
#63 0x00000000008414e8 in internal_condition_case (bfun=0x7651c9 <command_loop_1>, 
handlers=XIL(0x90), hfun=0x7647d8 <cmd_error>) at ../../src/eval.c:1355
#64 0x0000000000764dae in command_loop_2 (ignore=XIL(0)) at 
../../src/keyboard.c:1091
#65 0x000000000084099c in internal_catch (tag=XIL(0xd200), func=0x764d81 
<command_loop_2>, arg=XIL(0)) at ../../src/eval.c:1116
#66 0x0000000000764d4c in command_loop () at ../../src/keyboard.c:1070
#67 0x00000000007642bf in recursive_edit_1 () at ../../src/keyboard.c:714
#68 0x00000000007644b7 in Frecursive_edit () at ../../src/keyboard.c:786
#69 0x000000000076063a in main (argc=2, argv=0x7fffffffe7c8) at 
../../src/emacs.c:2035

Lisp Backtrace:
"framep-on-display" (0xffffb598)
"display-graphic-p" (0xffffba28)
"blink-cursor--should-blink" (0xffffbed0)
"blink-cursor-check" (0xffffc378)
"blink-cursor--rescan-frames" (0xffffc9f0)
"run-hook-with-args" (0xffffc9e8)
"delete-frame" (0xffffcdf0)
"handle-delete-frame" (0xffffd3f0)
"funcall-interactively" (0xffffd3e8)
"call-interactively" (0xffffd7c0)
"command-execute" (0xffffdd18)
(gdb)

-----

Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x00007ffff6a499ea in g_slice_alloc () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) bt
#0  0x00007ffff6a499ea in g_slice_alloc () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ffff6a49e69 in g_slice_alloc0 () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff718666c in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#3  0x00007ffff716dd22 in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#4  0x00007ffff716df2d in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#5  0x00007ffff717ea74 in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#6  0x00007ffff716a2ca in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#7  0x00007ffff717e9ac in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#8  0x00007ffff716c865 in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#9  0x00007ffff716b634 in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#10 0x00007ffff716c35d in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#11 0x00007ffff7152cfe in  () at /lib/x86_64-linux-gnu/libgtk-3.so.0
#12 0x00007ffff6b0dc8d in g_closure_invoke () at 
/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007ffff6b21365 in  () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007ffff6b2a2be in g_signal_emit_valist () at 
/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007ffff6b2a97f in g_signal_emit () at 
/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#16 0x00007ffff6f2a9ba in  () at /lib/x86_64-linux-gnu/libgdk-3.so.0
#17 0x00007ffff6f15c08 in  () at /lib/x86_64-linux-gnu/libgdk-3.so.0
#18 0x00007ffff6a2c863 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007ffff6a2bdd8 in g_main_context_dispatch () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007ffff6a2c1c8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007ffff6a2c25c in g_main_context_iteration () at 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007ffff7220bc5 in gtk_main_iteration () at 
/lib/x86_64-linux-gnu/libgtk-3.so.0
#23 0x000000000071dd74 in XTread_socket (terminal=0xf0b6d0, 
hold_quit=0x7fffffffb8c0) at ../../src/xterm.c:9407
#24 0x0000000000778e85 in gobble_input () at ../../src/keyboard.c:6885
#25 0x0000000000779365 in handle_async_input () at ../../src/keyboard.c:7122
#26 0x0000000000779384 in process_pending_signals () at 
../../src/keyboard.c:7136
#27 0x0000000000841b43 in maybe_quit () at ../../src/eval.c:1545
#28 0x00000000008453aa in Ffuncall (nargs=2, args=0x7fffffffba20) at 
../../src/eval.c:2766
#29 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3fc2c94), 
vector=XIL(0x7ffff3fc2b0d), maxdepth=make_fixnum(5), 
args_template=make_fixnum(0), nargs=0, args=0x7fffffffbed0) at 
../../src/bytecode.c:633
#30 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3fc2add), nargs=0, 
arg_vector=0x7fffffffbed0) at ../../src/eval.c:2989
#31 0x0000000000845548 in Ffuncall (nargs=1, args=0x7fffffffbec8) at 
../../src/eval.c:2796
#32 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3fc2e44), 
vector=XIL(0x7ffff3d999c5), maxdepth=make_fixnum(4), 
args_template=make_fixnum(0), nargs=0, args=0x7fffffffc378) at 
../../src/bytecode.c:633
#33 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3d99995), nargs=0, 
arg_vector=0x7fffffffc378) at ../../src/eval.c:2989
#34 0x0000000000845548 in Ffuncall (nargs=1, args=0x7fffffffc370) at 
../../src/eval.c:2796
#35 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3debd04), 
vector=XIL(0x7ffff3debced), maxdepth=make_fixnum(2), 
args_template=make_fixnum(256), nargs=1, args=0x7fffffffc9f8) at 
../../src/bytecode.c:633
#36 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3debcbd), nargs=1, 
arg_vector=0x7fffffffc9f0) at ../../src/eval.c:2989
#37 0x0000000000845548 in Ffuncall (nargs=2, args=0x7fffffffc9e8) at 
../../src/eval.c:2796
#38 0x000000000084477d in funcall_nil (nargs=2, args=0x7fffffffc9e8) at 
../../src/eval.c:2435
#39 0x0000000000844ca7 in run_hook_with_args (nargs=2, args=0x7fffffffc9e8, 
funcall=0x84475a <funcall_nil>) at ../../src/eval.c:2612
#40 0x0000000000844803 in Frun_hook_with_args (nargs=2, args=0x7fffffffc9e8) at 
../../src/eval.c:2477
#41 0x000000000084592e in funcall_subr (subr=0xe0f180 <Srun_hook_with_args>, 
numargs=2, args=0x7fffffffc9e8) at ../../src/eval.c:2847
#42 0x0000000000845504 in Ffuncall (nargs=3, args=0x7fffffffc9e0) at 
../../src/eval.c:2794
#43 0x0000000000841797 in internal_condition_case_n (bfun=0x845388 <Ffuncall>, 
nargs=3, args=0x7fffffffc9e0, handlers=XIL(0x30), hfun=0x481a69 <safe_eval_handler>) 
at ../../src/eval.c:1435
#44 0x0000000000481cbc in safe__call (inhibit_quit=false, nargs=3, 
func=XIL(0xb9a0), ap=0x7fffffffca90) at ../../src/xdisp.c:2820
#45 0x0000000000481d8d in safe_call (nargs=3, func=XIL(0xb9a0)) at 
../../src/xdisp.c:2835
#46 0x0000000000481f1e in safe_call2 (fn=XIL(0xb9a0), arg1=XIL(0x2940), 
arg2=XIL(0x12ffd95)) at ../../src/xdisp.c:2879
#47 0x000000000043458a in delete_frame (frame=XIL(0x12ffd95), force=XIL(0x30)) 
at ../../src/frame.c:2268
#48 0x0000000000434859 in Fdelete_frame (frame=XIL(0x12ffd95), force=XIL(0x30)) 
at ../../src/frame.c:2326
#49 0x0000000000845a5b in funcall_subr (subr=0xe01200 <Sdelete_frame>, 
numargs=2, args=0x7fffffffcdf0) at ../../src/eval.c:2869
#50 0x0000000000845504 in Ffuncall (nargs=3, args=0x7fffffffcde8) at 
../../src/eval.c:2794
#51 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3fe33a4), 
vector=XIL(0x7ffff3d6e68d), maxdepth=make_fixnum(7), 
args_template=make_fixnum(257), nargs=1, args=0x7fffffffd3f8) at 
../../src/bytecode.c:633
#52 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3d6e655), nargs=1, 
arg_vector=0x7fffffffd3f0) at ../../src/eval.c:2989
#53 0x0000000000845548 in Ffuncall (nargs=2, args=0x7fffffffd3e8) at 
../../src/eval.c:2796
#54 0x0000000000839ba8 in Ffuncall_interactively (nargs=2, args=0x7fffffffd3e8) 
at ../../src/callint.c:254
#55 0x000000000084592e in funcall_subr (subr=0xe0e900 <Sfuncall_interactively>, 
numargs=2, args=0x7fffffffd3e8) at ../../src/eval.c:2847
#56 0x0000000000845504 in Ffuncall (nargs=3, args=0x7fffffffd3e0) at 
../../src/eval.c:2794
#57 0x000000000083c20f in Fcall_interactively (function=XIL(0x7ffff2eebd40), 
record_flag=XIL(0), keys=XIL(0x1fe1df5)) at ../../src/callint.c:783
#58 0x0000000000845a87 in funcall_subr (subr=0xe0e940 <Scall_interactively>, 
numargs=3, args=0x7fffffffd7c0) at ../../src/eval.c:2872
#59 0x0000000000845504 in Ffuncall (nargs=4, args=0x7fffffffd7b8) at 
../../src/eval.c:2794
#60 0x000000000089cf80 in exec_byte_code (bytestr=XIL(0x7ffff3e1e284), 
vector=XIL(0x7ffff3e1dda5), maxdepth=make_fixnum(13), 
args_template=make_fixnum(1025), nargs=4, args=0x7fffffffdd38) at 
../../src/bytecode.c:633
#61 0x0000000000846188 in funcall_lambda (fun=XIL(0x7ffff3e1dd75), nargs=4, 
arg_vector=0x7fffffffdd18) at ../../src/eval.c:2989
#62 0x0000000000845548 in Ffuncall (nargs=5, args=0x7fffffffdd10) at 
../../src/eval.c:2796
#63 0x0000000000844f15 in call4 (fn=XIL(0x41a0), arg1=XIL(0x7ffff2eebd40), 
arg2=XIL(0), arg3=XIL(0x1fe1df5), arg4=XIL(0x30)) at ../../src/eval.c:2676
#64 0x000000000076a5f0 in read_char (commandflag=1, map=XIL(0x17cde83), 
prev_event=XIL(0), used_mouse_menu=0x7fffffffe13f, end_time=0x0) at 
../../src/keyboard.c:2882
#65 0x000000000078028e in read_key_sequence (keybuf=0x7fffffffe2d0, 
prompt=XIL(0), dont_downcase_last=false, can_return_switch_frame=true, 
fix_current_buffer=true, prevent_redisplay=false) at ../../src/keyboard.c:9547
#66 0x0000000000765645 in command_loop_1 () at ../../src/keyboard.c:1350
#67 0x00000000008414e8 in internal_condition_case (bfun=0x7651c9 <command_loop_1>, 
handlers=XIL(0x90), hfun=0x7647d8 <cmd_error>) at ../../src/eval.c:1355
#68 0x0000000000764dae in command_loop_2 (ignore=XIL(0)) at 
../../src/keyboard.c:1091
#69 0x000000000084099c in internal_catch (tag=XIL(0xd200), func=0x764d81 
<command_loop_2>, arg=XIL(0)) at ../../src/eval.c:1116
#70 0x0000000000764d4c in command_loop () at ../../src/keyboard.c:1070
#71 0x00000000007642bf in recursive_edit_1 () at ../../src/keyboard.c:714
#72 0x00000000007644b7 in Frecursive_edit () at ../../src/keyboard.c:786
#73 0x000000000076063a in main (argc=2, argv=0x7fffffffe7c8) at 
../../src/emacs.c:2035

Lisp Backtrace:
"blink-cursor--should-blink" (0xffffbed0)
"blink-cursor-check" (0xffffc378)
"blink-cursor--rescan-frames" (0xffffc9f0)
"run-hook-with-args" (0xffffc9e8)
"delete-frame" (0xffffcdf0)
"handle-delete-frame" (0xffffd3f0)
"funcall-interactively" (0xffffd3e8)
"call-interactively" (0xffffd7c0)
"command-execute" (0xffffdd18)
(gdb)