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3452dda95c
Associated type redeclarations occasionally occur to push around associated type witness inference. Suppress the warning about redeclarations that add no requirements (i.e., have neither an inheritance nor a where clause).
90 lines
3.3 KiB
Swift
90 lines
3.3 KiB
Swift
// RUN: %target-typecheck-verify-swift -typecheck %s -verify
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// RUN: %target-typecheck-verify-swift -typecheck -debug-generic-signatures %s > %t.dump 2>&1
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// RUN: %FileCheck %s < %t.dump
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// CHECK-LABEL: .P1@
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// CHECK-NEXT: Requirement signature: <Self>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0>
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protocol P1 {}
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// CHECK-LABEL: .P2@
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// CHECK-NEXT: Requirement signature: <Self>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0>
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protocol P2 {}
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// CHECK-LABEL: .P3@
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// CHECK-NEXT: Requirement signature: <Self>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0>
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protocol P3 {}
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// basic protocol
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// CHECK-LABEL: .Q1@
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// CHECK-NEXT: Requirement signature: <Self where Self.X : P1>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0 where τ_0_0.X : P1>
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protocol Q1 {
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associatedtype X: P1 // expected-note {{declared here}}
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}
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// inheritance
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// CHECK-LABEL: .Q2@
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// CHECK-NEXT: Requirement signature: <Self where Self : Q1>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0 where τ_0_0 : Q1>
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protocol Q2: Q1 {}
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// inheritance without any new requirements
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// CHECK-LABEL: .Q3@
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// CHECK-NEXT: Requirement signature: <Self where Self : Q1>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0 where τ_0_0 : Q1>
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protocol Q3: Q1 {
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associatedtype X
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}
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// inheritance adding a new conformance
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// CHECK-LABEL: .Q4@
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// CHECK-NEXT: Requirement signature: <Self where Self : Q1, Self.X : P2>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0 where τ_0_0 : Q1, τ_0_0.X : P2>
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protocol Q4: Q1 {
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associatedtype X: P2 // expected-warning{{redeclaration of associated type 'X'}}
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// expected-note@-1 2{{'X' declared here}}
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}
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// multiple inheritance
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// CHECK-LABEL: .Q5@
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// CHECK-NEXT: Requirement signature: <Self where Self : Q2, Self : Q3, Self : Q4>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0 where τ_0_0 : Q2, τ_0_0 : Q3, τ_0_0 : Q4>
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protocol Q5: Q2, Q3, Q4 {}
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// multiple inheritance without any new requirements
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// CHECK-LABEL: .Q6@
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// CHECK-NEXT: Requirement signature: <Self where Self : Q2, Self : Q3, Self : Q4>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0 where τ_0_0 : Q2, τ_0_0 : Q3, τ_0_0 : Q4>
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protocol Q6: Q2, // expected-note{{conformance constraint 'Self.X': 'P1' implied here}}
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Q3, Q4 {
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associatedtype X: P1 // expected-warning{{redundant conformance constraint 'Self.X': 'P1'}}
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// expected-warning@-1{{redeclaration of associated type 'X' from protocol 'Q4' is}}
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}
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// multiple inheritance with a new conformance
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// CHECK-LABEL: .Q7@
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// CHECK-NEXT: Requirement signature: <Self where Self : Q2, Self : Q3, Self : Q4, Self.X : P3>
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// CHECK-NEXT: Canonical requirement signature: <τ_0_0 where τ_0_0 : Q2, τ_0_0 : Q3, τ_0_0 : Q4, τ_0_0.X : P3>
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protocol Q7: Q2, Q3, Q4 {
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associatedtype X: P3 // expected-warning{{redeclaration of associated type 'X'}}
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}
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// SR-5945
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class SomeBaseClass {}
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// CHECK-DAG: .P4@
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// CHECK-NEXT: Requirement signature: <Self where Self == Self.BType.AType, Self.BType : P5, Self.Native : SomeBaseClass>
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protocol P4 {
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associatedtype Native : SomeBaseClass
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associatedtype BType : P5 where BType.AType == Self
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}
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// CHECK-DAG: .P5@
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// CHECK-NEXT: <Self where Self == Self.AType.BType, Self.AType : P4>
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protocol P5 {
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associatedtype AType : P4 where AType.BType == Self
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}
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