Jordan Rose def1ccac66 Don't print extensions to conform to protocols that aren't printed ...

Try a little harder to avoid printing empty extensions by seeing if
any of the inherited protocols are actually going to be printed.
Previously this just made things a little prettier, but with
implementation-only imports it's a correctness issue, since there may
be extensions of implementation-only types that do in fact conform to
non-public protocols.

rdar://problem/50748072

2019-05-14 16:16:28 -07:00

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