Emacs-w32... Still Crashing

Zdzislaw Meglicki zdzisiekm@sbcglobal.net
Mon Jul 7 19:15:00 GMT 2014

The current version of Emacs that I have is
emacs                   24.3.91-1            OK
emacs debuginfo         24.3.91-1            OK
emacs-el                24.3.91-1            OK
emacs-w32               24.3.91-1            OK
emacs-X11               24.3.91-1            OK

Cygwin is 
Cygwin DLL version info:
DLL version: 1.7.30
DLL epoch: 19
DLL old termios: 5
DLL malloc env: 28
Cygwin conv: 181
API major: 0
API minor: 272
Shared data: 5
DLL identifier: cygwin1
Mount registry: 3
Cygwin registry name: Cygwin
Program options name: Program Options
Installations name: Installations
Cygdrive default prefix:
Build date:
Shared id: cygwin1S5

Windows is 

Windows 8.1 Pro on AMD A8-5500 APU, 3.20 GHz, 64-bit OS, x64 CPU

These days, Emacs no longer crashes as often as it used to. 
So, there's been nothing to report until now. Emacs-w32 hanged
and produced the "do you want to enter debugger" window,
with the following backtrace produced by gdb:

Program received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 4532.0xa100]
0x00007ff974f39e3b in KERNELBASE!DebugBreak () from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll 
(gdb) bt 
#0  0x00007ff974f39e3b in KERNELBASE!DebugBreak () from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll 
#1  0x000000010061a7a4 in emacs_abort () at /usr/src/debug/emacs-24.3.91-1/src/w32fns.c:8474 
#2  0x000000010043b702 in check_message_stack () at /usr/src/debug/emacs-24.3.91-1/src/xdisp.c:10993 
#3  0x00000001004fd763 in shut_down_emacs (sig=0, stuff=4305643570) at /usr/src/debug/emacs-24.3.91-1/src/emacs.c:2042 
#4  0x00000001004fd591 in Fkill_emacs (arg=60) at /usr/src/debug/emacs-24.3.91-1/src/emacs.c:1952 
#5  0x00000001004fb159 in terminate_due_to_signal (sig=15, backtrace_limit=40) at /usr/src/debug/emacs-24.3.91-1/src/emacs.c:360 
#6  0x0000000100520429 in handle_fatal_signal (sig=15) at /usr/src/debug/emacs-24.3.91-1/src/sysdep.c:1630 
#7  0x000000010052035d in deliver_process_signal (sig=15, handler=0x100520411 ) at /usr/src/debug/emacs-24.3.91-1/src/sysdep.c:1570 
#8  0x0000000100520444 in deliver_fatal_signal (sig=15) at /usr/src/debug/emacs-24.3.91-1/src/sysdep.c:1636 
#9  0x0000000180070c8a in _cygtls::call_signal_handler (this=0x43ce00) at /usr/src/debug/cygwin-1.7.30-1/winsup/cygwin/exceptions.cc:1463 
#10 0x0000000180111db8 in sigdelayed () from /usr/bin/cygwin1.dll 
#11 0x0000000100a2e832 in bss_sbrk_buffer ()
#12 0x0000000000000000 in ?? () 

Zdzislaw (Gustav) Meglicki
Indiana University

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