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42 lines
1.5 KiB
Swift
42 lines
1.5 KiB
Swift
// RUN: %target-typecheck-verify-swift
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// RUN: %target-swift-frontend -typecheck -debug-generic-signatures %s 2>&1 | %FileCheck %s
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// CHECK-LABEL: redundant_protocol_refinement.(file).Base@
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// CHECK-LABEL: Requirement signature: <Self>
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protocol Base {}
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// CHECK-LABEL: redundant_protocol_refinement.(file).Middle@
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// CHECK-LABEL: Requirement signature: <Self where Self : Base>
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protocol Middle : Base {}
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// CHECK-LABEL: redundant_protocol_refinement.(file).Derived@
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// CHECK-LABEL: Requirement signature: <Self where Self : Middle>
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protocol Derived : Middle, Base {}
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// CHECK-LABEL: redundant_protocol_refinement.(file).Derived2@
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// CHECK-LABEL: Requirement signature: <Self where Self : Middle>
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protocol Derived2 : Middle {}
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// CHECK-LABEL: redundant_protocol_refinement.(file).MoreDerived@
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// CHECK-LABEL: Requirement signature: <Self where Self : Derived2>
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protocol MoreDerived : Derived2, Base {}
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protocol P1 {}
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protocol P2 {
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associatedtype Assoc: P1
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}
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// no warning here
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protocol Good: P2, P1 where Assoc == Self {}
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// CHECK-LABEL: redundant_protocol_refinement.(file).Good@
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// CHECK-LABEL: Requirement signature: <Self where Self : P1, Self : P2, Self == Self.[P2]Assoc>
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// missing refinement of 'P1'
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protocol Bad: P2 where Assoc == Self {}
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// expected-warning@-1 {{protocol 'Bad' should be declared to refine 'P1' due to a same-type constraint on 'Self'}}
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// CHECK-LABEL: redundant_protocol_refinement.(file).Bad@
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// CHECK-LABEL: Requirement signature: <Self where Self : P2, Self == Self.[P2]Assoc>
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