Slava Pestov d5cc01da0c Serialization: Don't fail out of loadNamedMembers() ...

This cleanup exposed a problem with deserialization recovery and
property wrappers. If deserializing a property backed by a wrapper
failed, the lazy member lookup would fail, but subsequently a
loadAllMembers() call would still load the property.

This behavior is actually incorrect, because silently dropping a
stored property of a @frozen struct can result in miscompiles.
I've filed rdar://59403542 and rdar://59403617 to track fixing this.

In the meantime, I've tweaked the logic a bit to preserve the old
behavior.

2020-02-12 18:32:46 -05:00

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