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9170378d25
Don't set allowMissing to true when checking conformance of a superclass requirement to a protocol, since this prevents us from being able to express something like 'T : C, T : Sendable' to mean 'T can be any subclass of C which is also Sendable'. Fixes rdar://problem/91530343.
35 lines
1.1 KiB
Swift
35 lines
1.1 KiB
Swift
// RUN: %target-typecheck-verify-swift
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// RUN: %target-swift-frontend -typecheck %s -debug-generic-signatures 2>&1 | %FileCheck %s
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// REQUIRES: concurrency
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// rdar://91174106 - allow missing Sendable conformances when extending a
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// type generically.
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// FIXME: Should warn because of missing Sendable, but currently is silent
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// because we aren't checking conformance availability here yet.
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class C {}
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struct G1<T: Sendable> {}
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// CHECK-LABEL: ExtensionDecl line={{.*}} base=G1
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// CHECK-NEXT: Generic signature: <T where T == C>
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extension G1 where T == C {}
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// CHECK-LABEL: ExtensionDecl line={{.*}} base=G1
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// CHECK-NEXT: Generic signature: <T where T : C, T : Sendable>
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extension G1 where T : C {}
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protocol P {
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associatedtype A
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}
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struct G2<T : P> where T.A : Sendable {}
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// CHECK-LABEL: ExtensionDecl line={{.*}} base=G2
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// CHECK-NEXT: Generic signature: <T where T : P, T.[P]A == C>
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extension G2 where T.A == C {}
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// CHECK-LABEL: ExtensionDecl line={{.*}} base=G2
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// CHECK-NEXT: Generic signature: <T where T : P, T.[P]A : C, T.[P]A : Sendable>
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extension G2 where T.A : C {}
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