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//@ edition: 2021
#![feature(async_fn_in_dyn_trait)]
//~^ WARN the feature `async_fn_in_dyn_trait` is incomplete
use std::future::Future;
trait AsyncTrait {
async fn async_dispatch(&self);
}
impl AsyncTrait for &'static str {
fn async_dispatch(&self) -> impl Future<Output = ()> {
async move {
// The implementor must box the future...
}
}
}
fn main() {
let x: &dyn AsyncTrait = &"hello, world!";
//~^ ERROR `impl Future<Output = ()>` needs to have the same ABI as a pointer
}
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