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// RUN: %target-typecheck-verify-swift -swift-version 4
// RUN: %target-swift-frontend -typecheck %s -debug-generic-signatures 2>&1 | %FileCheck %s
protocol P0 { }
protocol Q0: P0 { }
protocol P1 {
associatedtype AssocP1: Q0
func getAssocP1() -> AssocP1
}
protocol P2 : P1 {
associatedtype AssocP2: P1
func getAssocP2() -> AssocP2
}
protocol P3 {
associatedtype AssocP3: P0
func getAssocP3() -> AssocP3
}
protocol P4: P3 { }
protocol P5 : P4 {
associatedtype AssocP5 where AssocP3: Q0
}
func acceptP0<T: P0>(_: T) { }
func acceptQ0<T: Q0>(_: T) { }
func acceptP1<T: P1>(_: T) { }
func acceptP2<T: P2>(_: T) { }
func acceptP3<T: P3>(_: T) { }
func testPaths1<T: P2 & P4>(_ t: T) {
acceptP0(t.getAssocP2().getAssocP1())
acceptP0(t.getAssocP3())
}
func testPaths2<U: P2 & P4>(_ t: U) where U.AssocP3 == U.AssocP2.AssocP1 {
acceptP0(t.getAssocP2().getAssocP1())
}
func testPaths3<V: P5>(_ v: V) {
acceptP0(v.getAssocP3())
acceptQ0(v.getAssocP3())
}
// CHECK-LABEL: .P6Unordered@
// CHECK-NEXT: Requirement signature: <Self where Self : P5Unordered>
protocol P6Unordered: P5Unordered {
associatedtype A: P0 // expected-warning{{redeclaration of associated type 'A'}}
}
protocol P5Unordered {
associatedtype A: P0 // expected-note{{'A' declared here}}
func getA() -> A
}
func testUnorderedP5_P6<W: P6Unordered>(_ w: W) {
acceptP0(w.getA())
}
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