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Date:	Sun, 27 Dec 2009 09:36:49 -0500
From:	Ken Brown <kbrown AT cornell DOT edu>
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Subject:	Re: run2.exe segfaults when GDI and X11 elements are present
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On 12/27/2009 4:56 AM, Charles Wilson wrote:
> Charles Wilson wrote:
>> Still hunting the stack corruption/segv bug. PTC!
>
> I think I found it. Before, I was dynamically loading function pointers
> to XOpenDisplay and XCloseDisplay in the main thread, and passing them
> to the worker thread as user data.  By deferring the calls to
> dlopen/dlsym into the worker thread itself, the segvs go away (I'm not
> sure -- it's hard to debug threads other than main in cygwin -- but I
> *think* the function pointers became invalid in the worker thread
> context, in the previous scenario).
>
> So, give r20 a shot. (mintty is still invisible -- but at least run2
> doesn't appear to segfault).

I'm still getting a segfault with test1.xml from

   http://cygwin.com/ml/cygwin/2009-12/msg00871.html

Ken

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