39 lines
843 B
Rust
39 lines
843 B
Rust
// run-pass
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// edition:2021
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// check-run-results
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#![feature(dyn_star)]
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//~^ WARN the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes
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#![feature(noop_waker)]
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use std::future::Future;
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async fn foo(f: dyn* Future<Output = i32>) {
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println!("value: {}", f.await);
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}
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async fn async_main() {
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foo(Box::pin(async { 1 })).await
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}
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// ------------------------------------------------------------------------- //
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// Implementation Details Below...
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use std::task::*;
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use std::pin::pin;
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fn main() {
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let mut fut = pin!(async_main());
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// Poll loop, just to test the future...
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let waker = Waker::noop();
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let ctx = &mut Context::from_waker(&waker);
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loop {
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match fut.as_mut().poll(ctx) {
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Poll::Pending => {}
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Poll::Ready(()) => break,
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}
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}
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}
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