[PATCH] D67983: [ObjC] Diagnose implicit type coercion from ObjC 'Class' to object pointer types.

[John McCall via Phabricator via cfe-commits]

rjmccall added a comment.

We could probably do a quick check to see if the class informally conforms to the protocol.  `+copyWithZone` seems to be marked unavailable in ARC; not sure if that would cause problems for such a check.


Repository:
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  https://reviews.llvm.org/D67983/new/

https://reviews.llvm.org/D67983