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29 lines
575 B
Swift
29 lines
575 B
Swift
// RUN: %target-swift-frontend -verify -emit-ir %s
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// Ideally this would type check successfully; we should be able to
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// infer that X == Int using the same-type constraint 'A.X == X'.
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protocol P1 {
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associatedtype X
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// expected-note@-1 {{protocol requires nested type 'X'; do you want to add it?}}
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associatedtype A: P2 where A.X == X
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}
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protocol P2 {
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associatedtype X
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}
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struct S {}
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extension S {
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struct A: P2 {
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typealias X = Int
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}
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}
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extension S: P1 {}
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// expected-error@-1 {{type 'S' does not conform to protocol 'P1'}}
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print(S.X.self)
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