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// RUN: %target-swift-frontend -emit-sil -strict-concurrency=complete -target %target-swift-5.1-abi-triple -verify -enable-upcoming-feature GlobalActorIsolatedTypesUsability %s -o /dev/null
// This test validates the behavior of transfer non sendable around ownership
// constructs like non copyable types, consuming/borrowing parameters, and inout
// parameters.
// REQUIRES: concurrency
// REQUIRES: swift_feature_GlobalActorIsolatedTypesUsability
////////////////////////
// MARK: Declarations //
////////////////////////
class Klass {}
struct KlassBox {
var data = Klass()
}
actor Custom {
}
@globalActor
struct CustomActor {
static var shared: Custom {
return Custom()
}
}
@MainActor func transferToMain<T>(_ t: T) async {}
@MainActor func consumeTransferToMain<T>(_ t: consuming T) async {}
/////////////////
// MARK: Tests //
/////////////////
func testConsuming(_ x: consuming Klass) async {
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending task-isolated 'x' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and task-isolated uses}}
}
func testConsumingError(_ x: consuming Klass) async {
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending task-isolated 'x' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and task-isolated uses}}
print(x)
}
@CustomActor func testConsumingErrorGlobalActor(_ x: consuming Klass) async {
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending global actor 'CustomActor'-isolated 'x' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and global actor 'CustomActor'-isolated uses}}
print(x)
}
func testConsumingUseAfterConsumeError(_ x: consuming Klass) async { // expected-error {{'x' consumed more than once}}
await consumeTransferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending task-isolated 'x' to main actor-isolated global function 'consumeTransferToMain' risks causing data races between main actor-isolated and task-isolated uses}}
// expected-note @-2 {{consumed here}}
print(x)
// expected-note @-1 {{consumed again here}}
}
@CustomActor func testConsumingUseAfterConsumeErrorGlobalActor(_ x: consuming Klass) async { // expected-error {{'x' consumed more than once}}
await consumeTransferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending global actor 'CustomActor'-isolated 'x' to main actor-isolated global function 'consumeTransferToMain' risks causing data races between main actor-isolated and global actor 'CustomActor'-isolated uses}}
// expected-note @-2 {{consumed here}}
print(x)
// expected-note @-1 {{consumed again here}}
}
func testBorrowing(_ x: borrowing Klass) async {
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending task-isolated 'x' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and task-isolated uses}}
}
func testBorrowingError(_ x: borrowing Klass) async { // expected-error {{'x' is borrowed and cannot be consumed}}
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending task-isolated 'x' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and task-isolated uses}}
print(x) // expected-note {{consumed here}}
}
@CustomActor func testBorrowingErrorGlobalActor(_ x: borrowing Klass) async { // expected-error {{'x' is borrowed and cannot be consumed}}
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending global actor 'CustomActor'-isolated 'x' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and global actor 'CustomActor'-isolated uses}}
print(x) // expected-note {{consumed here}}
}
func testInOut(_ x: inout Klass) async {
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending task-isolated 'x' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and task-isolated uses}}
}
func testInOutError(_ x: inout Klass) async {
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending task-isolated 'x' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and task-isolated uses}}
print(x)
}
@CustomActor func testInOutErrorMainActor(_ x: inout Klass) async {
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending global actor 'CustomActor'-isolated 'x' to main actor-isolated global function 'transferToMain'}}
print(x)
}
@CustomActor func testInOutErrorMainActor2(_ x: inout Klass) async { // expected-error {{'x' used after consume}}
await transferToMain(x) // expected-warning {{sending 'x' risks causing data races}}
// expected-note @-1 {{sending global actor 'CustomActor'-isolated 'x' to main actor-isolated global function 'transferToMain'}}
_ = consume x // expected-note {{consumed here}}
} // expected-note {{used here}}
actor ActorTestCase {
let k = Klass()
// TODO: This crashes the compiler since we attempt to hop_to_executor to the
// value that is materialized onto disk.
//
// consuming func test() async {
// await transferToMain(k)
// }
borrowing func test2() async {
await transferToMain(k) // expected-warning {{sending 'self.k' risks causing data races}}
// expected-note @-1 {{sending 'self'-isolated 'self.k' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and 'self'-isolated uses}}
}
}
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