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19 lines
727 B
Swift
19 lines
727 B
Swift
// RUN: %target-typecheck-verify-swift
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// https://github.com/apple/swift/issues/49119
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protocol P {
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associatedtype A: P // expected-note {{protocol requires nested type 'A'}}
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}
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struct Type<Param> {}
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extension Type: P where Param: P, Param.A == Type<Param> {
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// expected-error@-1 {{extension of generic struct 'Type' has self-referential generic requirements}}
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// expected-note@-2 {{through reference here}}
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// expected-error@-3 {{type 'Type<Param>' does not conform to protocol 'P'}}
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// expected-note@-4 {{add stubs for conformance}}
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typealias A = Param
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// expected-note@-1 3{{through reference here}}
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// expected-note@-2 {{possibly intended match 'Type<Param>.A' (aka 'Param') does not conform to 'P'}}
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}
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