Joe Groff a7f23f5019 SIL: Canonicalize capture types with the AST function's generic signature. ...

When lowering closures, we avoid capturing the enclosing generic context when possible. However, the generic context may still be necessary to canonicalize types mentioned inside the closure, such as when an associated type is referred to that is same-typed to a concrete type. Fixes rdar://problem/30254048.

2017-02-03 12:08:57 -08:00

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