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18b747c181
This is done by diagnosing captures of `self` in escaping `sending` or `@Sendable` closures inside a deinit, which almost certainly means `self` will outlive deinit at runtime, which is a fatal error. This is a common mistake to make when creating isolated tasks inside nonisolated deinits to workaround the lack of synchrnous isolated deinits in Swift 6.
38 lines
982 B
Swift
38 lines
982 B
Swift
// RUN: %target-typecheck-verify-swift -strict-concurrency=complete -disable-availability-checking
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@MainActor
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class C {
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let x: Int = 0
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deinit {
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// expected-warning@+1 {{capture of 'self' in a closure that outlives deinit; this is an error in the Swift 6 language mode}}
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Task { @MainActor in
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_ = self
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}
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// expected-warning@+1 {{capture of 'self' in a closure that outlives deinit; this is an error in the Swift 6 language mode}}
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Task {
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_ = x
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}
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}
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}
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func enqueueSomewhereElse(_ closure: @escaping @Sendable () -> Void) {}
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@MainActor
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class C2 {
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let x: Int = 0
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deinit {
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// expected-warning@+1 {{capture of 'self' in a closure that outlives deinit; this is an error in the Swift 6 language mode}}
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enqueueSomewhereElse {
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_ = self
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}
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// expected-warning@+1 {{capture of 'self' in a closure that outlives deinit; this is an error in the Swift 6 language mode}}
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enqueueSomewhereElse {
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_ = self.x
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}
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}
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}
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