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35 lines
1.4 KiB
Swift
35 lines
1.4 KiB
Swift
// RUN: %target-typecheck-verify-swift -debug-generic-signatures -warn-redundant-requirements 2>&1 | %FileCheck %s
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// https://github.com/apple/swift/issues/54555
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// CHECK-LABEL: .Swappable1@
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// CHECK-NEXT: Requirement signature: <Self where Self == Self.[Swappable1]Swapped.[Swappable1]Swapped, Self.[Swappable1]B == Self.[Swappable1]Swapped.[Swappable1]A, Self.[Swappable1]Swapped : Swappable1>
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protocol Swappable1 {
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associatedtype A
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associatedtype B
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associatedtype Swapped : Swappable1
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where Swapped.B == A, // expected-warning {{redundant same-type constraint 'Self.Swapped.B' == 'Self.A'}}
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Swapped.A == B,
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Swapped.Swapped == Self
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}
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// CHECK-LABEL: .Swappable2@
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// CHECK-NEXT: Requirement signature: <Self where Self == Self.[Swappable2]Swapped.[Swappable2]Swapped, Self.[Swappable2]B == Self.[Swappable2]Swapped.[Swappable2]A, Self.[Swappable2]Swapped : Swappable2>
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protocol Swappable2 {
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associatedtype A
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associatedtype B
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associatedtype Swapped : Swappable2
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where Swapped.B == A,
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Swapped.Swapped == Self
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}
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// CHECK-LABEL: .Swappable3@
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// CHECK-NEXT: Requirement signature: <Self where Self == Self.[Swappable3]Swapped.[Swappable3]Swapped, Self.[Swappable3]B == Self.[Swappable3]Swapped.[Swappable3]A, Self.[Swappable3]Swapped : Swappable3>
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protocol Swappable3 {
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associatedtype A
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associatedtype B
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associatedtype Swapped : Swappable3
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where Swapped.A == B,
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Swapped.Swapped == Self
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}
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