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33 lines
683 B
Rust
33 lines
683 B
Rust
//@ aux-build:block-on.rs
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//@ edition: 2021
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//@ run-pass
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//@ check-run-results
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#![allow(refining_impl_trait)]
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#![feature(async_fn_in_dyn_trait)]
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//~^ WARN the feature `async_fn_in_dyn_trait` is incomplete
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extern crate block_on;
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use std::pin::Pin;
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use std::future::Future;
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trait AsyncTrait {
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async fn async_dispatch(&self);
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}
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impl AsyncTrait for &'static str {
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fn async_dispatch(&self) -> Pin<Box<impl Future<Output = ()>>> {
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Box::pin(async move {
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println!("message from the aether: {self}");
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})
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}
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}
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fn main() {
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block_on::block_on(async {
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let x: &dyn AsyncTrait = &"hello, world!";
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x.async_dispatch().await;
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});
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}
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