35 lines
783 B
Rust
35 lines
783 B
Rust
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//@ edition: 2021
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//@ compile-flags: -Zinline-mir
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//@ build-pass
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// Ensure that we don't hit a Steal ICE because we forgot to ensure
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// `mir_inliner_callees` for the synthetic by-move coroutine body since
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// its def-id wasn't previously being considered.
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#![feature(async_closure, noop_waker)]
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use std::future::Future;
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use std::pin::pin;
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use std::task::*;
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pub fn block_on<T>(fut: impl Future<Output = T>) -> T {
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let mut fut = pin!(fut);
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let ctx = &mut Context::from_waker(Waker::noop());
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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(t) => break t,
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}
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}
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}
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async fn call_once<T>(f: impl async FnOnce() -> T) -> T {
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f().await
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}
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fn main() {
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let c = async || {};
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block_on(call_once(c));
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}
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