pybind11_object_dealloc(): Tried to deallocate unregistered instance!

[alatdneg]

Hi, I've pulled the latest version and got it working but something in one of my tools is triggering this error, I've not managed to workout where it's happening yet, but this ticket seems to imply that the problem is actually on your end.

pybind/pybind11#1568

cheers!

[alatdneg]

This is the error msg.

Qt has caught an exception thrown from an event handler. Throwing
exceptions from an event handler is not supported in Qt. You must
reimplement QApplication::notify() and catch all exceptions there.

terminate called after throwing an instance of 'std::runtime_error'
what(): pybind11_object_dealloc(): Tried to deallocate unregistered instance!
Aborted

[alatdneg]

So I've tracked it down to QModelIndex.internalPointer(), seems this holds a weak reference.
Not sure why it's calling the unregister twice though, if I store a reference of any object used in an index in a global set, then I don't have the crash.
Obviously this is prolonging the life time of objects, which isn't great, but at least I can use the C++ version of otio.

[ssteinbach]

@alatdneg can you provide a bit more context or some repro code for this? As far as I know we haven't hit this in otioview, but it doesn't look like otioview uses the QModelIndex class

[meshula]

Closing to inactivity. Please feel free to repoen if this still occurs.