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Date:	Thu, 23 Jul 2009 15:23:32 +0100
From:	Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Re: strange behavior with threads...
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jean-luc malet wrote:
> Hi!
> I've the following code :
> void _Window::Start(void* arg)
> {
>         ThreadArgs args;

  This allocates a ThreadArgs struct on the stack.

>         int err = pthread_create(&main_thread,NULL,_Start, (void*)&args);

  This passes a pointer to the ThreadArgs struct on the stack to the new thread.

>         if (err)
>         {
>                 throw new  Exception(err, "window thread creation error");
>         }
> }

  This then immediately exits and deallocates the stack frame, making the
&args pointer you passed to the main_thread invalid.

    cheers,
      DaveK


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