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// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend -target %target-cpu-apple-macos14 -enable-experimental-feature Embedded -parse-as-library %s -c -o %t/a.o
// RUN: %target-clang -x c -c %S/Inputs/print.c -o %t/print.o
// RUN: %target-clang %t/a.o %t/print.o -o %t/a.out %swift_obj_root/lib/swift/embedded/%target-cpu-apple-macos/libswift_Concurrency.a -dead_strip
// RUN: %target-run %t/a.out | %FileCheck %s
// REQUIRES: executable_test
// REQUIRES: swift_in_compiler
// REQUIRES: optimized_stdlib
// REQUIRES: OS=macosx
// The Darwin SDK overlay module in the macOS SDK cannot be imported in
// embedded Swift mode.
// XFAIL: OS=macosx
import _Concurrency
actor Number {
var val: Int
var task: Task<Void, Never>?
func increment() {
print("did increment")
val += 1
}
func fib(n: Int) -> Int {
if n < 2 {
return n
}
return fib(n: n-1) + fib(n: n-2)
}
init() async {
val = 0
task = Task.detached(priority: .high) { await self.increment() }
// do some synchronous work
let ans = fib(n: 37)
guard ans == 24157817 else {
fatalError("miscomputation?")
}
// make sure task didn't modify me!
guard val == 0 else {
fatalError("race!")
}
print("finished init()")
}
init(iterations: Int) async {
var iter = iterations
repeat {
val = iter
iter -= 1
} while iter > 0
}
}
@main struct Main {
static func main() async {
// CHECK: finished init()
// CHECK-NEXT: did increment
let n1 = await Number()
await n1.task!.value
let n2 = await Number(iterations: 1000)
let val = await n2.val
guard val == 1 else {
fatalError("wrong val setting")
}
}
}
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