| // RUN: %target-swift-frontend -emit-silgen %s | %FileCheck %s |
| // RUN: %target-swift-frontend -emit-ir %s |
| |
| protocol Fooable { |
| associatedtype Bar |
| |
| func foo<T: Fooable where T.Bar == Self.Bar>(x x: T) -> Self.Bar |
| } |
| |
| struct X {} |
| |
| // Ensure that the protocol witness for requirements with same-type constraints |
| // is set correctly. <rdar://problem/16369105> |
| // CHECK-LABEL: sil hidden [transparent] [thunk] @_TTWV17witness_same_type3FooS_7FooableS_FS1_3foouRd__S1_wd__3BarzwxS2_rfT1xqd___wxS2_ : $@convention(witness_method) <τ_0_0 where τ_0_0 : Fooable, τ_0_0.Bar == X> (@in τ_0_0, @in_guaranteed Foo) -> @out X |
| struct Foo: Fooable { |
| typealias Bar = X |
| |
| func foo<T: Fooable where T.Bar == X>(x x: T) -> X { return X() } |
| } |
| |
| // rdar://problem/19049566 |
| // CHECK-LABEL: sil [transparent] [thunk] @_TTWu0_Rxs8Sequence_zWx8Iterator7Element_rGV17witness_same_type14LazySequenceOfxq__S_S2_FS_12makeIterator |
| public struct LazySequenceOf<SS : Sequence, A where SS.Iterator.Element == A> : Sequence { |
| public func makeIterator() -> AnyIterator<A> { |
| var opt: AnyIterator<A>? |
| return opt! |
| } |
| public subscript(i : Int) -> A { |
| get { |
| var opt: A? |
| return opt! |
| } |
| } |
| } |