Re: [Gtk-osx-users] Crash when quitting via Dock Icon

On Aug 25, 2010, at 9:05 PM, John Ralls wrote:

> I don't see any instances of libigemacintegration.dylib in that stack trace...
> "Bus Error" on OSX is the same as "SegFault" in Linux. You're dereferencing a pointer that has a bogus value (0x20). You'll have to fire up GDB to find out what pointer and how it's gotten the bad value.


  Thanks for the suggestion.  Alas, I'm not terribly skilled with gdb, and really am not even sure where to start.

However, I figured I'd try a different approach to debugging.  Instead, I've written a very simple demo to identify a couple issues:

Please find the demo code here:

1) When in the NSApplicationBlockTermination handler, I notice that "another" Command-Q will cause the application to immediately end.  So, I have tried attaching a new handler to the signal within the original handler (this new handler is just a True value, such that the application doesn't end).  However this still doesn't solve the problem.  Any suggestions?

2) As to the crash, this demo does reveal something.  When I quit by destroying the window with the red pill, cmd-q and ok, or appmenu -> quit, there is no problem.  When I quit by clicking the dock icon-> quit, it does exit, but not without returning the following console message:

2010-08-27 14:57:48.454 python[2502:903] *** attempt to pop an unknown autorelease pool (0x200ea00)

I appreciate all of your help and hard work on gtk-osx!


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