GNU bug report logs - #14970
Assertion failure deleting frames

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Juanma Barranquero <lekktu <at> gmail.com>
Subject: bug#14970: closed (Re: bug#14970: crash deleting frames)
Date: Sun, 28 Jul 2013 17:29:03 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#14970: Assertion failure deleting frames

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 14970 <at> debbugs.gnu.org.

-- 
14970: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14970
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Juanma Barranquero <lekktu <at> gmail.com>
Cc: 14970-done <at> debbugs.gnu.org
Subject: Re: bug#14970: crash deleting frames
Date: Sun, 28 Jul 2013 20:28:21 +0300

> From: Juanma Barranquero <lekktu <at> gmail.com>
> Date: Sun, 28 Jul 2013 19:04:08 +0200
> Cc: 14970 <at> debbugs.gnu.org
> 
> On Sun, Jul 28, 2013 at 5:25 PM, Eli Zaretskii <eliz <at> gnu.org> wrote:
> 
> > Does revision 113576 fix this?
> 
> Hard to say, but I just deleted 40+ frames and didn't trigger the bug,
> so hopefully yes. Close the bug and I'll re-open it if the bug
> reappears.

Done.

> > If not, please try to provide a
> > reproducing recipe, even if it is not 100% reliable.
> 
> The only recipe I had: enable desktop-save-mode, create 20+ frames,
> save, restore Emacs again, delete all the frames as fast as possible
> by clicking on the Close buttons. And I don't think the desktop saving
> & restoring is really relevant, but that's what I was doing everytime
> the bug happened.

Did you create the frames manually, or do you have some Lisp to
sweeten the pill?

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From: Juanma Barranquero <lekktu <at> gmail.com>
To: Bug-Gnu-Emacs <bug-gnu-emacs <at> gnu.org>
Subject: crash deleting frames
Date: Sun, 28 Jul 2013 02:22:51 +0200

Package: emacs
Version: 24.3.50

Context: I'm trying new desktop code to force frames onscreen. To test
it, I have a function that creates a fair number of frames (around
15/20) either partially or totally offscreen.

Once the new desktop code moves them onscreen, I usually close them
all via another interactive test function. But if I try instead to
close them by clicking on each window's Close button, sooner or later
(after closing 10/15 frames, usually) Emacs crashes.

In previous crashes it didn't generate a backtrace, nor did Windows
offer to attach a debugger to the crashed program. Also, running under
gdb I couldn't reproduce the bug. This is the first time I've been
offered to attach gdb.

Whatever the reason, something fishy is happening with delete-frame,

#0  0x76c7321a in KERNELBASE!DeleteAce () from
C:\Windows\syswow64\KernelBase.dll
#1  0x011ea460 in emacs_abort () at w32fns.c:8030
#2  0x010db418 in terminate_due_to_signal (sig=22,
backtrace_limit=2147483647) at emacs.c:369
#3  0x0115059d in die (msg=0x148470a "WINDOWP (a)", file=0x1484694
"lisp.h", line=798) at alloc.c:6558
#4  0x0114682c in XWINDOW (a=54749210) at lisp.h:798
#5  0x010129af in delete_frame (frame=93052933, force=54749234) at frame.c:1161
#6  0x01013496 in Fdelete_frame (frame=93052933, force=54749234) at frame.c:1451
#7  0x0116dadc in Ffuncall (nargs=3, args=0x88efe4) at eval.c:2819
#8  0x011ae49d in exec_byte_code (bytestr=19842041, vector=19842061,
maxdepth=16, args_template=54749210, nargs=0, args=0x0) at
bytecode.c:905
#9  0x0116e65c in funcall_lambda (fun=19842013, nargs=1,
arg_vector=0x12ec40d) at eval.c:3050
#10 0x0116dcf2 in Ffuncall (nargs=2, args=0x88f320) at eval.c:2865
#11 0x01167794 in Fcall_interactively (function=54934394,
record_flag=54749210, keys=90185989) at callint.c:839
#12 0x0116db0b in Ffuncall (nargs=4, args=0x88f54c) at eval.c:2823
#13 0x011ae49d in exec_byte_code (bytestr=19717001, vector=19717021,
maxdepth=52, args_template=4100, nargs=4, args=0x88f860) at
bytecode.c:905
#14 0x0116e298 in funcall_lambda (fun=19716981, nargs=4,
arg_vector=0x88f850) at eval.c:2984
#15 0x0116dcf2 in Ffuncall (nargs=5, args=0x88f84c) at eval.c:2865
#16 0x0116d661 in call4 (fn=54795106, arg1=54934394, arg2=54749210,
arg3=90185989, arg4=54749234) at eval.c:2664
#17 0x010e256f in read_char (commandflag=1, map=91059750,
prev_event=54749210, used_mouse_menu=0x88fac3, end_time=0x0) at
keyboard.c:2923
#18 0x010ee02f in read_key_sequence (keybuf=0x88fbe0, bufsize=30,
prompt=54749210, dont_downcase_last=false,
can_return_switch_frame=true,
    fix_current_buffer=true) at keyboard.c:9056
#19 0x010df234 in command_loop_1 () at keyboard.c:1434
#20 0x0116a91f in internal_condition_case (bfun=0x10deebd
<command_loop_1>, handlers=54803674, hfun=0x10de744 <cmd_error>) at
eval.c:1302
#21 0x010deb72 in command_loop_2 (ignore=54749210) at keyboard.c:1161
#22 0x0116a239 in internal_catch (tag=54793554, func=0x10deb4e
<command_loop_2>, arg=54749210) at eval.c:1076
#23 0x010deb2a in command_loop () at keyboard.c:1140
#24 0x010de2e1 in recursive_edit_1 () at keyboard.c:779
#25 0x010de49d in Frecursive_edit () at keyboard.c:843
#26 0x010dc76b in main (argc=5, argv=0xc22d98) at emacs.c:1566

Lisp Backtrace:
"delete-frame" (0x88efe8)
"handle-delete-frame" (0x88f324)
"call-interactively" (0x88f550)
"command-execute" (0x88f850)
(gdb)

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