[Property Wrappers] Only re-write assign_by_wrapper to assignment if all fields have been initialized. #31248
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slavapestov
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Apr 24, 2020
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Do you still need the isFullyUninitialized check above? Unless I'm missing something, it seems like "property wrapper is uninitialized" would be a special case of "any field uninitialized".
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That case is still needed for non-property-wrapped properties
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Sounds like we need to use assign_by_wrapper for everything then, but maybe not in this PR :-)
slavapestov
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if all fields have been initialized.
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Otherwise, the wrapped property's setter will be called with the potential to access uninitialized memory via observers.
Resolves: rdar://problem/60832285, rdar://problem/58312953
Resolves: SR-12341