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[Android] Fix ConcurrentModificationException in InteropUIBlockListener #1
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This PR is in draft until we figure out what we want to do for a Test Plan
Summary:
This React Native Android fix hardens the Fabric
InteropUiBlockListeneragainstConcurrentModificationExceptioncrashes inwillMountItemsanddidMountItems. By iterating over a shallow copy of the UI‐block lists and catching any mid‐iteration mutations, we ensure the listener never throws during a UI frame and always clears its pending blocks.The issue was first reported in React Native Issue #49783, and although React Native PR#50091 was closed and not merged, the work in that PR did make it to React Native in commit 17da3cb. However, the fix didn't go far enough. We saw intermittent examples of this exception being thrown when swiping through a carousel from
react-native-reanimated-carousel. This fix goes right to the exception site itself.Changelog:
[ANDROID|INTERNAL] [FIXED] - Hardened the Fabric
InteropUiBlockListeneragainstConcurrentModificationExceptioncrashes inwillMountItemsanddidMountItemsTest Plan:
(TBD)