Files
swift-mirror/test/Generics/inverse_conditional_conformance_restriction.swift
2025-03-19 11:59:04 -07:00

45 lines
2.3 KiB
Swift

// RUN: %target-typecheck-verify-swift \
// RUN: -enable-experimental-feature LifetimeDependence \
// RUN: -enable-experimental-feature SuppressedAssociatedTypes
// REQUIRES: swift_feature_LifetimeDependence
// REQUIRES: swift_feature_SuppressedAssociatedTypes
protocol P {}
protocol Q {}
class DoggoClass {}
struct Blah<T: ~Copyable & ~Escapable>: ~Copyable, ~Escapable {}
extension Blah: Copyable where T: Copyable & Escapable {}
// expected-error@-1 {{conditional conformance to suppressible protocol 'Copyable' cannot depend on 'T: Escapable'}}
extension Blah: Escapable where T: Copyable, T: Escapable {}
// expected-error@-1 {{conditional conformance to suppressible protocol 'Escapable' cannot depend on 'T: Copyable'}}
struct Fixed<T: ~Copyable & ~Escapable>: ~Copyable, ~Escapable {}
extension Fixed: Copyable where T: Copyable, T: ~Escapable {}
extension Fixed: Escapable where T: Escapable, T: ~Copyable {}
struct TryConformance<Whatever: ~Copyable>: ~Copyable {}
extension TryConformance: Copyable
where Whatever: P, Whatever: Q, Whatever: Sendable {}
// expected-error@-2 {{conditional conformance to suppressible protocol 'Copyable' cannot depend on 'Whatever: P'}}
// expected-error@-3 {{conditional conformance to suppressible protocol 'Copyable' cannot depend on 'Whatever: Q'}}
// expected-error@-4 {{conditional conformance to suppressible protocol 'Copyable' cannot depend on 'Whatever: Sendable'}}
struct TrySameType<Whatever: ~Copyable>: ~Copyable {}
extension TrySameType: Copyable
where Whatever == Int {}
// expected-error@-2 {{conditional conformance to suppressible protocol 'Copyable' cannot depend on 'Whatever == Int'}}
struct TryClassAndLayoutConstraints<Whatever: ~Copyable, Heckin>: ~Copyable {}
extension TryClassAndLayoutConstraints: Copyable
where Heckin: DoggoClass, Whatever: AnyObject {}
// expected-error@-2 {{conditional conformance to suppressible protocol 'Copyable' cannot depend on 'Whatever: AnyObject'}}
// expected-error@-3 {{conditional conformance to suppressible protocol 'Copyable' cannot depend on 'Heckin: DoggoClass'}}
protocol Queue: ~Copyable { associatedtype Job: ~Copyable }
struct Scheduler<Q: Queue>: ~Copyable {}
extension Scheduler: Copyable where Q.Job: Copyable {}
// expected-error@-1 {{conditional conformance to suppressible protocol 'Copyable' cannot depend on 'Q.Job: Copyable'}}