AddPendingEvent between threads crashes on Mac

[Robert Roebling]

> void MyThread::SendProgress(int progress)
> {
>    wxCommandEvent event(myEVT_PROGRESS);
>    event.SetInt(progress);
>    m_Dialog->AddPendingEvent(event);
> }
> 
> On the mac this causes an occasional crash. [...]
> 
> The worker thread:
> 0   semaphore_wait_signal_trap + 7
> 1   MPEnterCriticalRegion + 190
> 2   PostEventToQueueInternal + 234
> 3   PostEventToQueue + 51
> 4   wxMacWakeUp() + 200
> 5   wxWakeUpIdle() + 33
> 6   (the AddPendingEvent call)

Did you have a look at src/mac/carbon/utils.cpp, wxMacWakeUp()?
There is a comment about a race condition there (in my version
of that file). What version of wx are you using?

  Robert