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// RUN: %target-swift-frontend -emit-sil -swift-version 6 -target %target-swift-5.1-abi-triple -verify %s -o /dev/null -parse-as-library
// README: Once we loosen the parser so that sending is rejected in Sema
// instead of the parser, move into the normal
// transfernonsendable_global_actor.swift
////////////////////////
// MARK: Declarations //
////////////////////////
class NonSendableKlass {}
extension Task where Failure == Never {
public static func fakeInit(
@_implicitSelfCapture operation: sending @escaping () async -> Success
) {}
// This matches the current impl
public static func fakeInit2(
@_implicitSelfCapture @_inheritActorContext operation: sending @escaping @isolated(any) () async -> Success
) {}
}
func useValue<T>(_ t: T) {}
/////////////////
// MARK: Tests //
/////////////////
@MainActor func testGlobalFakeInit() {
let ns = NonSendableKlass()
// Will be resolved once @MainActor is @Sendable.
Task.fakeInit { @MainActor in // expected-error {{passing closure as a 'sending' parameter risks causing data races between main actor-isolated code and concurrent execution of the closure}}
print(ns) // expected-note {{closure captures 'ns' which is accessible to main actor-isolated code}}
}
useValue(ns)
}
@MainActor func testGlobalFakeInit2() {
let ns = NonSendableKlass()
// We shouldn't error here.
Task.fakeInit2 { @MainActor in
print(ns)
}
useValue(ns)
}
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