// RUN: not %target-swift-frontend %s -typecheck | |
struct V<T> : BidirectionalCollection {} | |
struct S { | |
func bar<T>(_ to: T.Type) -> V<T> { | |
return V<T>() | |
} | |
} | |
extension S { | |
func foo<R>(_ body: (UnsafeBufferPointer<UTF16.CodeUnit>) -> R) -> R { | |
return Array(self.bar(UTF16.self)).withUnsafeBufferPointer(body) | |
} | |
} |