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// RUN: %target-typecheck-verify-swift
// REQUIRES: rdar112865148
// REQUIRES: libdispatch
// UNSUPPORTED: OS=linux-gnu
// UNSUPPORTED: OS=linux-android
// UNSUPPORTED: OS=openbsd
import Dispatch
func test1(_ queue: dispatch_queue_t) {} // expected-error {{'dispatch_queue_t' is unavailable}}
func test2(_ queue: DispatchQueue) {
let base: NSObjectProtocol = queue
let _: DispatchObject = queue
let _ = base as? DispatchQueue
// Make sure the dispatch types are actually distinct types!
let _ = queue as DispatchSource // expected-error {{cannot convert value of type 'DispatchQueue' to type 'DispatchSource' in coercion}}
let _ = base as DispatchSource // expected-error {{'any NSObjectProtocol' is not convertible to 'DispatchSource'}}
// expected-note@-1 {{did you mean to use 'as!' to force downcast?}} {{16-18=as!}}
}
extension dispatch_queue_t {} // expected-error {{'dispatch_queue_t' is unavailable}}
// Make sure you can extend a dispatch type via its common name.
extension DispatchQueue {
func myAsync(_ block: @escaping () -> Void) {
async(execute: block)
}
}
func test_dispatch1(_ object: dispatch_object_t) {} // expected-error {{'dispatch_object_t' is unavailable}}
func test_dispatch2(_ object: DispatchObject) {
dispatch_retain(object) // expected-error {{'dispatch_retain' is unavailable in Swift}}
dispatch_release(object) // expected-error {{'dispatch_release' is unavailable in Swift}}
}
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