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// RUN: %target-swift-frontend %s -emit-sil -o /dev/null -verify -strict-concurrency=complete
// REQUIRES: concurrency
// REQUIRES: asserts
// REQUIRES: OS=macosx
do {
struct Test {
init<T: Sendable>(value: T) {}
init<T>(value: T) {}
}
struct SendableOnly {
init<T: Sendable>(value: T) {}
}
func testNonSendable<T>(v: T) { // expected-note {{consider making generic parameter 'T' conform to the 'Sendable' protocol}}
_ = Test(value: v) // Ok (non-Sendable overload)
_ = SendableOnly(value: v)
// expected-warning@-1 {{type 'T' does not conform to the 'Sendable' protocol}}
}
func testSendable<T: Sendable>(v: T) {
_ = Test(value: v) // Ok
_ = SendableOnly(value: v) // Ok
}
}
do {
class K {
func value() {}
}
struct X {
var fn: (Int) -> K
func fn(_: Int) -> Int { 42 }
}
func sendable<T>(_ fn: (Int) -> T) -> T { fn(42) }
func sendable<T: Sendable>(_ fn: (Int) -> T) -> T { fn(0) }
func test(x: X) {
let res = sendable(x.fn) // Ok (non-ambiguous and non-Sendable overload)
res.value() // To make sure that previous expression picks a property
let _: K = sendable(x.fn) // Ok (picks `sendable<T>` with a property)
let _: Int = sendable(x.fn) // Ok (picks `sendable<T: Sendable>` with a method)
}
}
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