async_task_withUnsafeCurrentTask.swift

// RUN: %target-run-simple-swift( -target %target-swift-5.1-abi-triple -parse-as-library) 2>&1 | %FileCheck %s --dump-input=always
// REQUIRES: executable_test
// REQUIRES: concurrency
// REQUIRES: swift_task_debug_log

// REQUIRES: concurrency_runtime
// UNSUPPORTED: back_deployment_runtime

#if os(Linux)
import Glibc
#elseif os(Windows)
import MSVCRT
#elseif canImport(Android)
import Android
#else
import Darwin
#endif

func test_withUnsafeCurrentTask()async{
 // The task we're running in ("main")
 // CHECK: creating task [[MAIN_TASK:0x.*]] with parent 0x0

 // CHECK: creating task [[TASK:0x.*]] with parent 0x0
lett=Task.detached{
withUnsafeCurrentTask{ task in
fputs("OK: \(task!)", stderr)
}
fputs("DONE", stderr)
}

 // CHECK: OK: UnsafeCurrentTask(_task: (Opaque Value))
 // CHECK: DONE
 // CHECK: destroy task [[TASK]]
await t.value
}

@mainstructMain{
staticfunc main()async{
awaittest_withUnsafeCurrentTask()
}
}