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Samuel Susla a9f1e23d38 Check if instance is valid before calling C++ 
Summary:
Changelog: [internal]

Why does the crash happen?
We call method on invalid address. We crash on `std::weak_ptr::lock` because that's the first accessed ivar.
In D29020768 (https://github.com/facebook/react-native/commit/25e8fbe8ffa1c91522e91819a781434093f8b759), eventEmitter may be destroyed before an event is dispatched. Calling destroy on hybrid object destroys only C++ part.

Reviewed By: JoshuaGross

Differential Revision: D29194906

fbshipit-source-id: ae8d9d90aa8d98d69d29884e80d6b930b1e66870
2021-06-17 10:01:22 -07:00
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facebook
Check if instance is valid before calling C++
2021-06-17 10:01:22 -07:00