39 lines
712 B
Rust
39 lines
712 B
Rust
//@ aux-build:block-on.rs
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//@ edition:2018
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//@ run-pass
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//@ check-run-results
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#![feature(async_closure)]
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#![allow(unused)]
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extern crate block_on;
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struct DropMe(i32);
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impl Drop for DropMe {
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fn drop(&mut self) {
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println!("{} was dropped", self.0);
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}
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}
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async fn call_once(f: impl async FnOnce()) {
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println!("before call");
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let fut = Box::pin(f());
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println!("after call");
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drop(fut);
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println!("future dropped");
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}
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fn main() {
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block_on::block_on(async {
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let d = DropMe(42);
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let async_closure = async move || {
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let d = &d;
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println!("called");
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};
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call_once(async_closure).await;
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println!("after");
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});
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}
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