WM_QUIT problem (was "twm issue ...")

[Eliot Moss <moss at cs dot umass dot edu>]

Since nobody has responded at all, I thought I would
try again, a different way ...

This is a case where what I believe is normal termination
of a window manager (in my case twm) is causing a seg fault
in XWin, at least that's what the attached log seems to
say.

The odd thing is that this happens when I exit twm by
typing control-shift-q, where I have the following twm
declaration:

"q"   = s | c : all : f.quit

But I also have a menu with an f.quit item, and when I
exit that way, I do not get the seg fault (second
attached log).

I suppose this is not a huge deal, since I am exiting
everything anyway, but a seg fault is kind of scary to
a user of an important thing like X :-) ...

Best wishes -- Eliot Moss
Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.7.1.0 (10701000)
Build Date: 2009-11-04

Contact: cygwin-xfree@cygwin.com

XWin was started with the following command line:

/usr/bin/X :0 -unixkill -clipboard -multimonitors -auth 
 /home/Eliot/.serverauth.5240 

ddxProcessArgument - Initializing default screens
winInitializeDefaultScreens - w 1280 h 800
winInitializeDefaultScreens - Returning
2009-11-12 06:56:49 winValidateArgs - g_iNumScreens: 1 iMaxConsecutiveScreen: 1
2009-11-12 06:56:49 (II) xorg.conf is not supported
2009-11-12 06:56:49 (II) See http://x.cygwin.com/docs/faq/cygwin-x-faq.html for more information
2009-11-12 06:56:49 winPrefsLoadPreferences: /etc/X11/system.XWinrc
2009-11-12 06:56:49 LoadPreferences: Done parsing the configuration file...
2009-11-12 06:56:49 winGetDisplay: DISPLAY=:0.0
2009-11-12 06:56:49 winDetectSupportedEngines - Windows NT/2000/XP
2009-11-12 06:56:49 winDetectSupportedEngines - DirectDraw installed
2009-11-12 06:56:49 winDetectSupportedEngines - DirectDraw4 installed
2009-11-12 06:56:49 winDetectSupportedEngines - Returning, supported engines 00000007
2009-11-12 06:56:49 winSetEngine - Using Shadow DirectDraw NonLocking
2009-11-12 06:56:49 winAdjustVideoModeShadowDDNL - Using Windows display depth of 32 bits per pixel
2009-11-12 06:56:49 winFinishScreenInitFB - Masks: 00ff0000 0000ff00 000000ff
2009-11-12 06:56:49 Screen 0 added at XINERAMA coordinate (0,0).
2009-11-12 06:56:49 MIT-SHM extension disabled due to lack of kernel support
2009-11-12 06:56:49 XFree86-Bigfont extension local-client optimization disabled due to lack of shared memory support in the kernel
2009-11-12 06:56:49 (II) AIGLX: Loaded and initialized /usr/lib/dri/swrast_dri.so
2009-11-12 06:56:49 (II) GLX: Initialized DRISWRAST GL provider for screen 0
2009-11-12 06:56:49 [dix] Could not init font path element /usr/share/fonts/OTF/, removing from list!
2009-11-12 06:56:49 winPointerWarpCursor - Discarding first warp: 640 400
2009-11-12 06:56:49 (--) 8 mouse buttons found
2009-11-12 06:56:49 (--) Setting autorepeat to delay=500, rate=31
2009-11-12 06:56:49 (--) winConfigKeyboard - Layout: "00000409" (00000409) 
2009-11-12 06:56:49 (--) Using preset keyboard for "English (USA)" (409), type "4"
2009-11-12 06:56:49 Rules = "base" Model = "pc105" Layout = "us" Variant = "none" Options = "none"
2009-11-12 06:56:50 winProcEstablishConnection - Hello
2009-11-12 06:56:50 winInitClipboard ()
2009-11-12 06:56:50 winClipboardProc - Hello
2009-11-12 06:56:50 DetectUnicodeSupport - Windows NT/2000/XP
2009-11-12 06:56:50 winProcEstablishConnection - winInitClipboard returned.
2009-11-12 06:56:50 winGetDisplay: DISPLAY=:0.0
2009-11-12 06:56:50 winClipboardProc - DISPLAY=:0.0
2009-11-12 06:56:50 winClipboardProc - XOpenDisplay () returned and successfully opened the display.
2009-11-12 06:56:50 winClipboardFlushXEvents - unexpected event type 34
2009-11-12 06:57:09 winClipboardProc - winClipboardFlushWindowsMessageQueue trapped WM_QUIT message, exiting main loop.
2009-11-12 06:57:09 winClipboardProc - XDestroyWindow succeeded.
2009-11-12 06:57:09 Segmentation fault at address 0x268
2009-11-12 06:57:09 
Fatal server error:
2009-11-12 06:57:09 Caught signal 11 (Segmentation fault). Server aborting
2009-11-12 06:57:09 

Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.7.1.0 (10701000)
Build Date: 2009-11-04

Contact: cygwin-xfree@cygwin.com

XWin was started with the following command line:

/usr/bin/X :0 -unixkill -clipboard -multimonitors -auth 
 /home/Eliot/.serverauth.8996 

ddxProcessArgument - Initializing default screens
winInitializeDefaultScreens - w 1280 h 800
winInitializeDefaultScreens - Returning
2009-11-12 06:55:42 winValidateArgs - g_iNumScreens: 1 iMaxConsecutiveScreen: 1
2009-11-12 06:55:42 (II) xorg.conf is not supported
2009-11-12 06:55:42 (II) See http://x.cygwin.com/docs/faq/cygwin-x-faq.html for more information
2009-11-12 06:55:42 winPrefsLoadPreferences: /etc/X11/system.XWinrc
2009-11-12 06:55:42 LoadPreferences: Done parsing the configuration file...
2009-11-12 06:55:42 winGetDisplay: DISPLAY=:0.0
2009-11-12 06:55:42 winDetectSupportedEngines - Windows NT/2000/XP
2009-11-12 06:55:42 winDetectSupportedEngines - DirectDraw installed
2009-11-12 06:55:42 winDetectSupportedEngines - DirectDraw4 installed
2009-11-12 06:55:42 winDetectSupportedEngines - Returning, supported engines 00000007
2009-11-12 06:55:42 winSetEngine - Using Shadow DirectDraw NonLocking
2009-11-12 06:55:42 winAdjustVideoModeShadowDDNL - Using Windows display depth of 32 bits per pixel
2009-11-12 06:55:43 winFinishScreenInitFB - Masks: 00ff0000 0000ff00 000000ff
2009-11-12 06:55:43 Screen 0 added at XINERAMA coordinate (0,0).
2009-11-12 06:55:43 MIT-SHM extension disabled due to lack of kernel support
2009-11-12 06:55:43 XFree86-Bigfont extension local-client optimization disabled due to lack of shared memory support in the kernel
2009-11-12 06:55:43 (II) AIGLX: Loaded and initialized /usr/lib/dri/swrast_dri.so
2009-11-12 06:55:43 (II) GLX: Initialized DRISWRAST GL provider for screen 0
2009-11-12 06:55:43 [dix] Could not init font path element /usr/share/fonts/OTF/, removing from list!
2009-11-12 06:55:43 winPointerWarpCursor - Discarding first warp: 640 400
2009-11-12 06:55:43 (--) 8 mouse buttons found
2009-11-12 06:55:43 (--) Setting autorepeat to delay=500, rate=31
2009-11-12 06:55:43 (--) winConfigKeyboard - Layout: "00000409" (00000409) 
2009-11-12 06:55:43 (--) Using preset keyboard for "English (USA)" (409), type "4"
2009-11-12 06:55:43 Rules = "base" Model = "pc105" Layout = "us" Variant = "none" Options = "none"
2009-11-12 06:55:43 winProcEstablishConnection - Hello
2009-11-12 06:55:43 winInitClipboard ()
2009-11-12 06:55:43 winClipboardProc - Hello
2009-11-12 06:55:43 DetectUnicodeSupport - Windows NT/2000/XP
2009-11-12 06:55:43 winProcEstablishConnection - winInitClipboard returned.
2009-11-12 06:55:43 winGetDisplay: DISPLAY=:0.0
2009-11-12 06:55:43 winClipboardProc - DISPLAY=:0.0
2009-11-12 06:55:43 winClipboardProc - XOpenDisplay () returned and successfully opened the display.
2009-11-12 06:55:44 winClipboardFlushXEvents - unexpected event type 34
2009-11-12 06:56:03 winClipboardProc - winClipboardFlushWindowsMessageQueue trapped WM_QUIT message, exiting main loop.
2009-11-12 06:56:03 winClipboardProc - XDestroyWindow succeeded.
2009-11-12 06:56:03 winDeinitMultiWindowWM - Noting shutdown in progress

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