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0696ec6d50
You can't do this anymore:
struct G<T> {}
protocol P: Sendable {}
extension G: P where T: P {}
Fixes rdar://95695543.
28 lines
1.3 KiB
Swift
28 lines
1.3 KiB
Swift
// RUN: %target-typecheck-verify-swift -swift-version 6
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protocol P: Sendable {}
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protocol Q: Sendable {}
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struct One<T> { // expected-note {{consider making generic parameter 'T' conform to the 'Sendable' protocol}}
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var t: T // expected-error {{stored property 't' of 'Sendable'-conforming generic struct 'One' has non-sendable type 'T'}}
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}
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extension One: P where T: P {}
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// expected-error@-1 {{conditional conformance of type 'One<T>' to protocol 'P' does not imply conformance to inherited protocol 'Sendable'}}
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// expected-note@-2 {{did you mean to explicitly state the conformance like 'extension One: Sendable where ...'}}
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struct Both<T> { // expected-note {{consider making generic parameter 'T' conform to the 'Sendable' protocol}}
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var t: T // expected-error {{stored property 't' of 'Sendable'-conforming generic struct 'Both' has non-sendable type 'T'}}
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}
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extension Both: P where T: P {}
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// expected-error@-1 {{conditional conformance of type 'Both<T>' to protocol 'P' does not imply conformance to inherited protocol 'Sendable'}}
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// expected-note@-2 {{did you mean to explicitly state the conformance like 'extension Both: Sendable where ...'}}
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extension Both: Q where T: Q {}
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func takesSendable<T: Sendable>(_: T) {}
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takesSendable(One<Int>(t: 3))
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takesSendable(Both<Int>(t: 3))
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