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5f5975c81d
This list we are iterating over is removed from when there are no more GC references to an ESO. This may be triggered by a GC allocation. Since UniversalGlobalScopeMixin::notify_about_rejected_promises performs GC allocations (by, for example, allocating a GC function), it is not safe to simply iterate over this list. Fix this by taking a strong reference to all registered ESOs by copying them across to a RootVector before iteration. Fixes: #4652