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-rw-r--r--src/test/ui/async-await/async-closure.rs100
1 files changed, 0 insertions, 100 deletions
diff --git a/src/test/ui/async-await/async-closure.rs b/src/test/ui/async-await/async-closure.rs
deleted file mode 100644
index 12d66b19e..000000000
--- a/src/test/ui/async-await/async-closure.rs
+++ /dev/null
@@ -1,100 +0,0 @@
-// run-pass
-
-// revisions: default nomiropt
-//[nomiropt]compile-flags: -Z mir-opt-level=0
-
-// edition:2018
-// aux-build:arc_wake.rs
-
-#![feature(async_closure)]
-
-extern crate arc_wake;
-
-use std::pin::Pin;
-use std::future::Future;
-use std::sync::{
- Arc,
- atomic::{self, AtomicUsize},
-};
-use std::task::{Context, Poll};
-use arc_wake::ArcWake;
-
-struct Counter {
- wakes: AtomicUsize,
-}
-
-impl ArcWake for Counter {
- fn wake(self: Arc<Self>) {
- Self::wake_by_ref(&self)
- }
- fn wake_by_ref(arc_self: &Arc<Self>) {
- arc_self.wakes.fetch_add(1, atomic::Ordering::SeqCst);
- }
-}
-
-struct WakeOnceThenComplete(bool);
-
-fn wake_and_yield_once() -> WakeOnceThenComplete { WakeOnceThenComplete(false) }
-
-impl Future for WakeOnceThenComplete {
- type Output = ();
- fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<()> {
- if self.0 {
- Poll::Ready(())
- } else {
- cx.waker().wake_by_ref();
- self.0 = true;
- Poll::Pending
- }
- }
-}
-
-fn async_closure(x: u8) -> impl Future<Output = u8> {
- (async move |x: u8| -> u8 {
- wake_and_yield_once().await;
- x
- })(x)
-}
-
-fn async_closure_in_unsafe_block(x: u8) -> impl Future<Output = u8> {
- (unsafe {
- async move |x: u8| unsafe_fn(unsafe_async_fn(x).await)
- })(x)
-}
-
-async unsafe fn unsafe_async_fn(x: u8) -> u8 {
- wake_and_yield_once().await;
- x
-}
-
-unsafe fn unsafe_fn(x: u8) -> u8 {
- x
-}
-
-fn test_future_yields_once_then_returns<F, Fut>(f: F)
-where
- F: FnOnce(u8) -> Fut,
- Fut: Future<Output = u8>,
-{
- let mut fut = Box::pin(f(9));
- let counter = Arc::new(Counter { wakes: AtomicUsize::new(0) });
- let waker = ArcWake::into_waker(counter.clone());
- let mut cx = Context::from_waker(&waker);
- assert_eq!(0, counter.wakes.load(atomic::Ordering::SeqCst));
- assert_eq!(Poll::Pending, fut.as_mut().poll(&mut cx));
- assert_eq!(1, counter.wakes.load(atomic::Ordering::SeqCst));
- assert_eq!(Poll::Ready(9), fut.as_mut().poll(&mut cx));
-}
-
-fn main() {
- macro_rules! test {
- ($($fn_name:expr,)*) => { $(
- test_future_yields_once_then_returns($fn_name);
- )* }
- }
-
- test! {
- async_closure,
- async_closure_in_unsafe_block,
- }
-}