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Date: Thu, 23 Jul 2009 15:50:11 +0200
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Subject: strange behavior with threads...
From: jean-luc malet <jeanluc DOT malet AT gmail DOT com>
To: cygwin AT cygwin DOT com
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Hi!
I've the following code :
void _Window::Start(void* arg)
{
        ThreadArgs args;
        args.TheWindow=3Dthis;
        args.args=3Darg;
        int err =3D pthread_create(&main_thread,NULL,_Start, (void*)&args);
        if (err)
        {
                throw new  Exception(err, "window thread creation error");
        }
}
void* _Window::_Start(void* arg)
{
        ThreadArgs* args =3D (ThreadArgs*) arg;
        pthread_exit((void*)args->TheWindow->start_routine(args->args));
}

_Window::_Start is static

for some reason that I can't determine it happens that args in
_Window::_Start have strange value (args->TheWindow don't contain a
valid pointer, ie a pointer on a _Window object)
this happens on 2 thread configuration upon creation of the second
thread (1rst thread is main() and do only create the Window and sleep)
It happens randomly and backtrace on crash don't contain any usefull
information (looks exactly like the one when args->TheWindow is
correct)
I didn't tested on other posix system
thanks for your help
Regards
JLM

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