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Tests: Test conformance checker with witnesses in unavailable extensions #78872

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Jan 24, 2025
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Tests: Test conformance checker with witnesses in unavailable extensions #78872

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10 changes: 9 additions & 1 deletion test/decl/protocol/req/unavailable.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@ class Bar : NonObjCProto { // expected-error {{type 'Bar' does not conform to pr

// Complain about unavailable witnesses (error in Swift 4, warning in Swift 3)
protocol P {
func foo(bar: Foo) // expected-note 2 {{requirement 'foo(bar:)' declared here}}
func foo(bar: Foo) // expected-note 3 {{requirement 'foo(bar:)' declared here}}
}

struct ConformsToP : P { // expected-error{{type 'ConformsToP' does not conform to protocol 'P'}}
Expand Down Expand Up @@ -64,6 +64,14 @@ extension ConformsToP5: P {
func foo(bar: Foo) { }
}

struct ConformsToP6: P {} // expected-error{{type 'ConformsToP6' does not conform to protocol 'P'}}
// expected-error@-1 {{unavailable instance method 'foo(bar:)' was used to satisfy a requirement of protocol 'P'}}

@available(*, unavailable)
extension ConformsToP6 {
func foo(bar: Foo) { } // expected-note {{'foo(bar:)' declared here}}
}

@available(*, unavailable)
enum UnavailableEnum {
struct ConformsToP6: P {
Expand Down