semaphore_wait_signal_trap

Is anyone dealing with such an intermittent freeze / crash ?

I got that sometimes in my app (high interactive one, but i cared to managed threads or messages politely) :

semaphore_wait_signal_trap
pthread_mutex_lock
juce::CriticalSection::enter
juce::MessageManagerLock::MessageManagerLock
juce::MessageManager::deliverMessage
EventHandlerProc
...

Well, the message thread must be sitting there unable to get the mmlock, presumably because you’ve leaked one somewhere or deadlocked in another thread.