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Gnu Emacs 24.3 Crashing On Cygwin


From: joseph . koziatek
Subject: Gnu Emacs 24.3 Crashing On Cygwin
Date: Thu, 4 Feb 2016 08:46:26 -0800 (PST)
User-agent: G2/1.0

Hello All,

In recent years I have been experiencing frequent core dumps with Gnu Emacs on 
cygwin. I run cygwin-xfree on Windows Enterprise 7. My versions are:

Emacs  Version:  GNU Emacs 24.3.1 (x86_64-unknown-cygwin)
Cygwin Version:  CYGWIN_NT-6.1 SBK051BF31D2EMG 1.7.28(0.271/5/3) 2014-02-09 
21:06 x86_64 Cygwin

In my experimentation, I would startup 10 Emacs's. For 5 of them I would let 
sit, the other 5 I would simply start the shell (M-x shell). I would not use 
the shell buffer (no commands or interaction in shell buffer). 

In all the crashes, it is always in the Emacs's that I started a shell (no M-x 
shell and it never crashes).

I am not loading any .emacs or .el customizations either. 
My run command is:

emacs-w32 -title `whoami`@`uname -n` -geometry 100x44+10+10 -fn "consolas" &

I have read about interference occurring with cygwin from other software in the 
article at:
https://cygwin.com/faq/faq.html#faq.using.bloda . I have no problems with other 
cygwin programs. I run XWin.exe sessions for several months without crashes. My 
cygwin xterm's never crash.

What is it with the (M-x) shell command that leads to these crashes? 

My experiment shows the crashes are related to (M-x shell).  The crashes occur 
with no interaction with the Emacs process and occur also when emacs is 
minimized.

I tried emacs-w32 and have the same crashing behavior. With emacs-w32 I get an 
abort dialog with instructions to run gdb with the process id.  

Below I have some stackdumps and some gdb stack traces (with the 'where' 
command).

Is there anything I can do to resolve this? 
Do the stack traces show what's happening?
Has this problem been dealt with in newer cygwin/emacs releases?
What can I try?

Joe
----------------------------------------------------------------------------------------------------------------------------

Here is ldd output:

> ldd /usr/bin/emacs-w32
ldd /usr/bin/emacs-w32
        ntdll.dll => /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll (0x771f0000)
        kernel32.dll => /cygdrive/c/WINDOWS/system32/kernel32.dll (0x770d0000)
        KERNELBASE.dll => /cygdrive/c/WINDOWS/system32/KERNELBASE.dll 
(0x7fefd870000)
        cygwin1.dll => /usr/bin/cygwin1.dll (0x180040000)
        cygdbus-1-3.dll => /usr/bin/cygdbus-1-3.dll (0x424230000)
        cyggif-4.dll => /usr/bin/cyggif-4.dll (0x442580000)
        cygX11-6.dll => /usr/bin/cygX11-6.dll (0x4bae40000)
        cygxcb-1.dll => /usr/bin/cygxcb-1.dll (0x4cd4d0000)
        cygXau-6.dll => /usr/bin/cygXau-6.dll (0x5f2d20000)
        cygXdmcp-6.dll => /usr/bin/cygXdmcp-6.dll (0x500140000)
        cyggnutls-28.dll => /usr/bin/cyggnutls-28.dll (0x54d330000)
        cyggmp-10.dll => /usr/bin/cyggmp-10.dll (0x4029c0000)
        cyghogweed-2.dll => /usr/bin/cyghogweed-2.dll (0x504200000)
        cygnettle-4.dll => /usr/bin/cygnettle-4.dll (0x546610000)
        cygiconv-2.dll => /usr/bin/cygiconv-2.dll (0x5461d0000)
        cygintl-8.dll => /usr/bin/cygintl-8.dll (0x5ee2d0000)
        cygp11-kit-0.dll => /usr/bin/cygp11-kit-0.dll (0x55dca0000)
        cygtasn1-6.dll => /usr/bin/cygtasn1-6.dll (0x5ee220000)
        cygz.dll => /usr/bin/cygz.dll (0x597fd0000)
        cygjpeg-8.dll => /usr/bin/cygjpeg-8.dll (0x443d30000)
        cygncursesw-10.dll => /usr/bin/cygncursesw-10.dll (0x48ca30000)
        cygpng15-15.dll => /usr/bin/cygpng15-15.dll (0x4fd450000)
        cygtiff-5.dll => /usr/bin/cygtiff-5.dll (0x4e93d0000)
        cygxml2-2.dll => /usr/bin/cygxml2-2.dll (0x5f2ae0000)
        cyglzma-5.dll => /usr/bin/cyglzma-5.dll (0x593420000)
        cygXpm-noX-4.dll => /usr/bin/cygXpm-noX-4.dll (0x5b3130000)
        GDI32.dll => /cygdrive/c/WINDOWS/system32/GDI32.dll (0x7feff480000)
        USER32.dll => /cygdrive/c/WINDOWS/system32/USER32.dll (0x76fd0000)
        LPK.dll => /cygdrive/c/WINDOWS/system32/LPK.dll (0x7fefda20000)
        USP10.dll => /cygdrive/c/WINDOWS/system32/USP10.dll (0x7feff280000)
        msvcrt.dll => /cygdrive/c/WINDOWS/system32/msvcrt.dll (0x7feff140000)
        ADVAPI32.dll => /cygdrive/c/WINDOWS/system32/ADVAPI32.dll 
(0x7feff000000)
        sechost.dll => /cygdrive/c/WINDOWS/SYSTEM32/sechost.dll (0x7feff260000)
        RPCRT4.dll => /cygdrive/c/WINDOWS/system32/RPCRT4.dll (0x7fefdd70000)
        COMCTL32.dll => 
/cygdrive/c/WINDOWS/WinSxS/amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_fa396087175ac9ac/COMCTL32.dll
 (0x7fefbcb0000)
        SHLWAPI.dll => /cygdrive/c/WINDOWS/system32/SHLWAPI.dll (0x7fefec30000)
        comdlg32.dll => /cygdrive/c/WINDOWS/system32/comdlg32.dll 
(0x7fefef60000)
        SHELL32.dll => /cygdrive/c/WINDOWS/system32/SHELL32.dll (0x7fefdea0000)
        ole32.dll => /cygdrive/c/WINDOWS/system32/ole32.dll (0x7fefed50000)
        WINSPOOL.DRV => /cygdrive/c/WINDOWS/system32/WINSPOOL.DRV 
(0x7fef85e0000)
        IMM32.DLL => /cygdrive/c/WINDOWS/system32/IMM32.DLL (0x7feff430000)
        MSCTF.dll => /cygdrive/c/WINDOWS/system32/MSCTF.dll (0x7fefdc60000)


---------------------------------------------------------------------------

emacs-w32.exe.stackdump1
Stack trace:
Frame        Function    Args
00000427400  0018006F6D3 (00000000000, 00000000000, 00000000000, 00000000000)
0000000000B  00180070B8A (00000000000, 00100000000, 000000004C4, 00000000000)
000004275E0  00180118278 (006000A2C18, 0000042D440, 0000042772C, 006000A2CC0)
000000000C1  0018011536E (00000427A70, 00000000000, 00000000000, 001004B9FF0)
0000000000B  0018011583B (00000000000, 00000000000, 00000000000, 0000000000B)
0000000000B  00180115A0C (00000000000, 00000000000, 0018013354D, 00000000000)
0000000000B  0018011144B (00000000000, 00000000000, 0018013354D, 00000000000)
End of stack trace


emacs-w32.exe.stackdump2
Stack trace:
Frame        Function    Args
000004289B0  0018006F6D3 (00000000000, 00000000000, 00000000000, 00000429910)
00000000006  00180070B8A (00000000000, 00100000000, 0000000046C, 00000000000)
00000428B90  00180118278 (006000A2C18, 0000042D440, 00000428CDC, 006000A2CC0)
000000000C1  0018011536E (00000429020, 00000000000, 00000000000, 001004B9FF0)
00000000006  0018011583B (00000000000, 00000000000, 00000000000, 00000000006)
00000000006  00180115A0C (0010091DC58, 0010091DB10, 00000000000, 000004291A8)
00000000006  0018011144B (0010091DB10, 00000000000, 000004291A8, 00000000020)
00000000006  00000428FC0 (00000000000, 000004291A8, 00000000020, 006000A6480)
00000000006  0010091DC58 (000004291A8, 00000000020, 006000A6480, 00000000006)
00000000006  0010091DB10 (000004291A8, 00000000020, 006000A6480, 00000000006)
End of stack trace


emacs-w32.exe.stackdump3
Stack trace:
Frame        Function    Args
00000428650  0018006F6D3 (00000000000, 00000000000, 00000000000, 00000000000)
00000000006  00180070B8A (00000000000, 00100000000, 00000000448, 00000000000)
00000428830  00180118278 (006000A2818, 0000042D440, 0000042897C, 006000A28C0)
000000000C1  0018011536E (00000428CC0, 00000000000, 00000000000, 001004B9FF0)
00000000006  0018011583B (00000000000, 00000000000, 00000000000, 00000000006)
00000000006  00180115A0C (02C00000001, 000772146B4, 00000000000, 00000000000)
00000000006  0018011144B (000772146B4, 00000000000, 00000000000, 00000000020)
00000000006  00000A5EBF8 (00000000000, 00000000000, 00000000020, 00000000000)
00000000006  02C00000001 (00000000000, 00000000020, 00000000000, 00000000006)
00000000006  000772146B4 (00000000000, 00000000020, 00000000000, 00000000006)
End of stack trace


emacs-X11.exe.stackdump4
Stack trace:
Frame        Function    Args
00000426FA0  0018006F6D3 (00000427360, 00100000000, 00000427360, 00000427360)
0000000000B  00180070B8A (00000000000, 00000000000, 000000001AC, 00000000000)
00000427180  00180118278 (00000427208, 00000427480, 00000427438, 00000000000)
000000000C1  0018011536E (00000427610, 00000000000, 00000000000, 001004E2580)
0000000000B  0018011583B (00000000000, 00000000000, 00000000000, 0000000000B)
0000000000B  00180115A0C (00000000000, 00000000000, 00000000000, 00000000000)
0000000000B  0018011144B (00000000000, 00000000000, 00000000000, 00000000000)
End of stack trace
/home/koziatekj> 




################################
################################
#####    CORE DUMP#1      ###### 
################################
################################
 
(gdb) thread 1
[Switching to thread 1 (Thread 213696.0x32758)]
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076ff4bc4 in USER32!GetComboBoxInfo ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 2
[Switching to thread 2 (Thread 213696.0x341f8)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x000000000042ce00 in ?? ()
#3  0x000000010055a020 in schedule_atimer ()
    at /usr/src/debug/emacs-24.3-7/src/atimer.c:343
#4  0x00000001802dca00 in ?? () from /usr/bin/cygwin1.dll
#5  0x0000000000000000 in ?? ()


(gdb) thread 3
[Switching to thread 3 (Thread 213696.0x343f0)]
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000000007720b037 in ntdll!TpIsTimerSet ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000002 in ?? ()
#3  0x0000000000000000 in ?? ()


(gdb) thread 4
[Switching to thread 4 (Thread 213696.0x101cc)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 5
[Switching to thread 5 (Thread 213696.0x33730)]
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076fe9e9e in USER32!GetMessageW ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x0000000100f7dc60 in bss_sbrk_buffer ()
#3  0x0000000076fd9bcc in USER32!CopyImage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#4  0x0000000000c80078 in ?? ()
#5  0x0000000076fe6274 in USER32!GetMessageA ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#6  0x0000000003c0aaf0 in ?? ()
#7  0x000000010056f3bc in w32_msg_pump (msg_buf=0x3c0ac20)
    at /usr/src/debug/emacs-24.3-7/src/w32fns.c:2369
#8  0x000000010056fa10 in w32_msg_worker (arg=arg@entry=0x0)
    at /usr/src/debug/emacs-24.3-7/src/w32fns.c:2595
#9  0x000000018004611b in _cygtls::call2 (this=0x3c0ce00, 
    func=0x10056f9b0 <w32_msg_worker>, arg=0x0, buf=0x3c0cd50)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:100
#10 0x000000018004627e in _cygtls::call (func=0x10056f9b0 <w32_msg_worker>, 
    arg=0x5bbfd0) at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:30
#11 0x00000000770e652d in KERNEL32!BaseThreadInitThunk ()
   from /cygdrive/c/WINDOWS/system32/kernel32.dll
#12 0x0000000000000000 in ?? ()


(gdb) thread 6
[Switching to thread 6 (Thread 213696.0x33d24)]
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd883c2f in KERNELBASE!ConnectNamedPipe ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 7
[Switching to thread 7 (Thread 213696.0x33120)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x00000001801cd4a8 in threads () from /usr/bin/cygwin1.dll
#3  0x00000001800ba9c9 in CreateEventA (lpEventAttributes=0x4faaabc, 
    bManualReset=0, bInitialState=0, lpName=<optimized out>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/kernel32.cc:74
#4  0x00000001800454aa in cygthread::stub (
    arg=arg@entry=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygthread.cc:93
#5  0x000000018004611b in _cygtls::call2 (this=0x4face00, 
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>, 
    buf=0x0) at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:100
#6  0x000000018004627e in _cygtls::call (
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:30
#7  0x00000000770e652d in KERNEL32!BaseThreadInitThunk ()
   from /cygdrive/c/WINDOWS/system32/kernel32.dll
#8  0x0000000000000000 in ?? ()


(gdb) thread 8
[Switching to thread 8 (Thread 213696.0x33a0c)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 9
[Switching to thread 9 (Thread 213696.0x34488)]
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x00000000772e7f08 in ntdll!DbgUiRemoteBreakin ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000000 in ?? ()







################################
################################
#####    CORE DUMP#2      ###### 
################################
################################


(gdb) thread 1
[Switching to thread 1 (Thread 216952.0x34f7c)]
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076ff4bc4 in USER32!GetComboBoxInfo ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 2
[Switching to thread 2 (Thread 216952.0x34f80)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x000000000042ce00 in ?? ()
#3  0x000000010055a020 in schedule_atimer ()
    at /usr/src/debug/emacs-24.3-7/src/atimer.c:343
#4  0x00000001802dca00 in ?? () from /usr/bin/cygwin1.dll
#5  0x0000000000000000 in ?? ()


(gdb) thread 3
[Switching to thread 3 (Thread 216952.0x34f84)]
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000000007720b037 in ntdll!TpIsTimerSet ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000002 in ?? ()
#3  0x0000000000000000 in ?? ()


(gdb) thread 4
[Switching to thread 4 (Thread 216952.0x34f88)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 5
[Switching to thread 5 (Thread 216952.0x34f8c)]
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076fe9e9e in USER32!GetMessageW ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0xffffffffa96908ef in ?? ()
#3  0x0000000000000000 in ?? ()


(gdb) thread 6
[Switching to thread 6 (Thread 216952.0x34bd0)]
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd883c2f in KERNELBASE!ConnectNamedPipe ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 7
[Switching to thread 7 (Thread 216952.0x34af8)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x00000001801cd4a8 in threads () from /usr/bin/cygwin1.dll
#3  0x00000001800ba9c9 in CreateEventA (lpEventAttributes=0x596aabc, 
    bManualReset=0, bInitialState=0, lpName=<optimized out>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/kernel32.cc:74
#4  0x00000001800454aa in cygthread::stub (
    arg=arg@entry=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygthread.cc:93
#5  0x000000018004611b in _cygtls::call2 (this=0x596ce00, 
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>, 
    buf=0x0) at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:100
#6  0x000000018004627e in _cygtls::call (
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:30
#7  0x00000000770e652d in KERNEL32!BaseThreadInitThunk ()
   from /cygdrive/c/WINDOWS/system32/kernel32.dll
#8  0x0000000000000000 in ?? ()


(gdb) thread 8
[Switching to thread 8 (Thread 216952.0x33b68)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 9
[Switching to thread 9 (Thread 216952.0x34d80)]
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x00000000772e7f08 in ntdll!DbgUiRemoteBreakin ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000000 in ?? ()






################################
################################
#####    CORE DUMP#3      ###### 
################################
################################

 
thread 1
[Switching to thread 1 (Thread 216548.0x34b08)]
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076ff4bc4 in USER32!GetComboBoxInfo ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 2
[Switching to thread 2 (Thread 216548.0x34edc)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x000000000042ce00 in ?? ()
#3  0x000000010055a020 in schedule_atimer ()
    at /usr/src/debug/emacs-24.3-7/src/atimer.c:343
#4  0x00000001802dca00 in ?? () from /usr/bin/cygwin1.dll
#5  0x0000000000000000 in ?? ()


(gdb) thread 3
[Switching to thread 3 (Thread 216548.0x341bc)]
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000000007720b037 in ntdll!TpIsTimerSet ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000002 in ?? ()
#3  0x0000000000000000 in ?? ()


(gdb) thread 4
[Switching to thread 4 (Thread 216548.0x32ec8)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 5
[Switching to thread 5 (Thread 216548.0x34ffc)]
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076fe9e9e in USER32!GetMessageW ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x00000000253c059f in ?? ()
#3  0x0000000000000000 in ?? ()


(gdb) thread 6
[Switching to thread 6 (Thread 216548.0x34d40)]
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd883c2f in KERNELBASE!ConnectNamedPipe ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 7
[Switching to thread 7 (Thread 216548.0x34040)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x00000001801cd4a8 in threads () from /usr/bin/cygwin1.dll
#3  0x00000001800ba9c9 in CreateEventA (lpEventAttributes=0x5afaabc, 
    bManualReset=0, bInitialState=0, lpName=<optimized out>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/kernel32.cc:74
#4  0x00000001800454aa in cygthread::stub (
    arg=arg@entry=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygthread.cc:93
#5  0x000000018004611b in _cygtls::call2 (this=0x5afce00, 
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>, 
    buf=0x0) at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:100
#6  0x000000018004627e in _cygtls::call (
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:30
#7  0x00000000770e652d in KERNEL32!BaseThreadInitThunk ()
   from /cygdrive/c/WINDOWS/system32/kernel32.dll
#8  0x0000000000000000 in ?? ()


(gdb) thread 8
[Switching to thread 8 (Thread 216548.0x33c8c)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 9
[Switching to thread 9 (Thread 216548.0x34074)]
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x00000000772e7f08 in ntdll!DbgUiRemoteBreakin ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000000 in ?? ()






################################
################################
#####    CORE DUMP#4      ###### 
################################
################################

 
(gdb) thread 1
[Switching to thread 1 (Thread 217052.0x34f7c)]
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076ff4bc4 in USER32!GetComboBoxInfo ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 2
[Switching to thread 2 (Thread 217052.0x28efc)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x000000000042ce00 in ?? ()
#3  0x000000010055a020 in schedule_atimer ()
    at /usr/src/debug/emacs-24.3-7/src/atimer.c:343
#4  0x00000001802dca00 in ?? () from /usr/bin/cygwin1.dll
#5  0x0000000000000000 in ?? ()


(gdb) thread 3
[Switching to thread 3 (Thread 217052.0x34c38)]
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000000007720b037 in ntdll!TpIsTimerSet ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000002 in ?? ()
#3  0x0000000000000000 in ?? ()


(gdb) thread 4
[Switching to thread 4 (Thread 217052.0x3237c)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 5
[Switching to thread 5 (Thread 217052.0x34c0c)]
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076fe9e9e in USER32!GetMessageW ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x0000000005f715ad in ?? ()
#3  0x0000000000000000 in ?? ()


(gdb) thread 6
[Switching to thread 6 (Thread 217052.0x34ff0)]
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd883c2f in KERNELBASE!ConnectNamedPipe ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 7
[Switching to thread 7 (Thread 217052.0x34e34)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x00000001801cd4a8 in threads () from /usr/bin/cygwin1.dll
#3  0x00000001800ba9c9 in CreateEventA (lpEventAttributes=0x581aabc, 
    bManualReset=0, bInitialState=0, lpName=<optimized out>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/kernel32.cc:74
#4  0x00000001800454aa in cygthread::stub (
    arg=arg@entry=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygthread.cc:93
#5  0x000000018004611b in _cygtls::call2 (this=0x581ce00, 
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>, 
    buf=0x0) at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:100
#6  0x000000018004627e in _cygtls::call (
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:30
#7  0x00000000770e652d in KERNEL32!BaseThreadInitThunk ()
   from /cygdrive/c/WINDOWS/system32/kernel32.dll
#8  0x0000000000000000 in ?? ()


(gdb) thread 8
[Switching to thread 8 (Thread 217052.0x34d0c)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 9
[Switching to thread 9 (Thread 217052.0x34b38)]
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x00000000772e7f08 in ntdll!DbgUiRemoteBreakin ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000000 in ?? ()





################################
################################
#####    CORE DUMP#5      ###### 
################################
################################
 
(gdb) thread 1
[Switching to thread 1 (Thread 216416.0x343cc)]
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe933a in WaitMessage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076ff4bc4 in USER32!GetComboBoxInfo ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 2
[Switching to thread 2 (Thread 216416.0x34f54)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x000000000042ce00 in ?? ()
#3  0x000000010055a020 in schedule_atimer ()
    at /usr/src/debug/emacs-24.3-7/src/atimer.c:343
#4  0x00000001802dca00 in ?? () from /usr/bin/cygwin1.dll
#5  0x0000000000000000 in ?? ()


(gdb) thread 3
[Switching to thread 3 (Thread 216416.0x34ed4)]
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724186a in ntdll!ZwWaitForMultipleObjects ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000000007720b037 in ntdll!TpIsTimerSet ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000002 in ?? ()
#3  0x0000000000000000 in ?? ()


(gdb) thread 4
[Switching to thread 4 (Thread 216416.0x33ec8)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 5
[Switching to thread 5 (Thread 216416.0x34754)]
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
(gdb) where
#0  0x0000000076fe9e6a in USER32!SfmDxSetSwapChainStats ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#1  0x0000000076fe9e9e in USER32!GetMessageW ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#2  0x0000000100f7dc60 in bss_sbrk_buffer ()
#3  0x0000000076fd9bcc in USER32!CopyImage ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#4  0x0000000000a2075e in ?? ()
#5  0x0000000076fe6274 in USER32!GetMessageA ()
   from /cygdrive/c/WINDOWS/system32/USER32.dll
#6  0x0000000003c7aaf0 in ?? ()
#7  0x000000010056f3bc in w32_msg_pump (msg_buf=0x3c7ac20)
    at /usr/src/debug/emacs-24.3-7/src/w32fns.c:2369
#8  0x000000010056fa10 in w32_msg_worker (arg=arg@entry=0x0)
    at /usr/src/debug/emacs-24.3-7/src/w32fns.c:2595
#9  0x000000018004611b in _cygtls::call2 (this=0x3c7ce00, 
    func=0x10056f9b0 <w32_msg_worker>, arg=0x0, buf=0x3c7cd50)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:100
#10 0x000000018004627e in _cygtls::call (func=0x10056f9b0 <w32_msg_worker>, 
    arg=0x56ffd0) at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:30
#11 0x00000000770e652d in KERNEL32!BaseThreadInitThunk ()
   from /cygdrive/c/WINDOWS/system32/kernel32.dll
#12 0x0000000000000000 in ?? ()


(gdb) thread 6
[Switching to thread 6 (Thread 216416.0x349d8)]
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724164a in ntdll!ZwFsControlFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd883c2f in KERNELBASE!ConnectNamedPipe ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x00000000055eaabb in ?? ()
#3  0x00000000055eaac0 in ?? ()
#4  0x00000000055eab00 in ?? ()
#5  0x000000000002f868 in ?? ()
#6  0x00000000055eaa90 in ?? ()
#7  0x0000000000110008 in ?? ()
#8  0x0000000000000000 in ?? ()


(gdb) thread 7
[Switching to thread 7 (Thread 216416.0x33970)]
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x000000007724131a in ntdll!ZwReadFile ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd871a7a in ReadFile ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x00000001801cd4a8 in threads () from /usr/bin/cygwin1.dll
#3  0x00000001800ba9c9 in CreateEventA (lpEventAttributes=0x59eaabc, 
    bManualReset=0, bInitialState=0, lpName=<optimized out>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/kernel32.cc:74
#4  0x00000001800454aa in cygthread::stub (
    arg=arg@entry=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygthread.cc:93
#5  0x000000018004611b in _cygtls::call2 (this=0x59ece00, 
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>, 
    buf=0x0) at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:100
#6  0x000000018004627e in _cygtls::call (
    func=0x180045450 <cygthread::stub(void*)>, arg=0x1801cd4a8 <threads+264>)
    at /usr/src/debug/cygwin-1.7.28-2/winsup/cygwin/cygtls.cc:30
#7  0x00000000770e652d in KERNEL32!BaseThreadInitThunk ()
   from /cygdrive/c/WINDOWS/system32/kernel32.dll
#8  0x0000000000000000 in ?? ()


(gdb) thread 8
[Switching to thread 8 (Thread 216416.0x34360)]
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x00000000772412fa in ntdll!ZwWaitForSingleObject ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x000007fefd8710dc in WaitForSingleObjectEx ()
   from /cygdrive/c/WINDOWS/system32/KERNELBASE.dll
#2  0x0000000000000000 in ?? ()


(gdb) thread 9
[Switching to thread 9 (Thread 216416.0x34720)]
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
(gdb) where
#0  0x0000000077240591 in ntdll!DbgBreakPoint ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#1  0x00000000772e7f08 in ntdll!DbgUiRemoteBreakin ()
   from /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll
#2  0x0000000000000000 in ?? ()

####################



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