Slava Pestov c1c54d1462 Sema: Fix materializeForSet for members of extensions of imported classes ...

An assertion I added recently to check property overrides in
the ASTVerifier uncovered some bugs in this area:

- We did not synthesize a materializeForSet for properties
  defined in extensions of imported classes unless they
  witnessed a protocol requirement.

  This triggered an assertion if the property had an
  override that was checked before the protocol conformance,
  since the override's materializeForSet would not be marked
  as an override of the base materializeForSet.

- materializeForSet for properties defined in extensions would
  statically dispatch the getter and setter instead of dynamically
  dispatching. This is incorrect since we statically dispatch
  to the materializeForSet in this case, and we can in fact
  override it in a subclass.

Fixes <rdar://problem/31334272>.

2017-04-02 23:43:41 -07:00

5.7 KiB

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