Slava Pestov a250688a50 AST: Use availability to disambiguate multiple overlapping conformances ...

If a conformance is found in an imported module as well as the current module,
and one of the two conformances is conditionally unavailable on the current
deployment target, pick the one that is always available.

Fixes <rdar://problem/78633800>.

2021-06-07 00:45:59 -04:00

100 KiB

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