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2bf37b49cf
This means properties returning noncopyable types or those marked with `@_borrowed` can't have effects. The compiler never accepted the latter correctly before. The synthesized coroutine `read` calls the user-defined `get`, but coroutines don't support `async` or `throws`. resolves rdar://106260787
31 lines
902 B
Swift
31 lines
902 B
Swift
// RUN: %target-typecheck-verify-swift -disable-availability-checking
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// REQUIRES: objc_interop
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// REQUIRES: concurrency
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import Foundation
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@_borrowed // expected-error {{'@_borrowed' attribute cannot be applied to this declaration}}
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func foo() -> String {}
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@_borrowed
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var string = ""
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@objc protocol P {
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@_borrowed // expected-error {{property cannot be '@_borrowed' if it is an @objc protocol requirement}}
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var title: String { get }
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}
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@objc class A {
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@_borrowed // expected-error {{property cannot be '@_borrowed' if it is '@objc dynamic'}}
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@objc dynamic var title: String { return "" }
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}
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public class Holder {
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@_borrowed var one: String {
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get async { "" } // expected-error {{getter cannot be '@_borrowed' if it is 'async' or 'throws'}}
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}
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@_borrowed var two: String {
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get throws { "" } // expected-error {{getter cannot be '@_borrowed' if it is 'async' or 'throws'}}
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}
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}
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