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//@ edition: 2021
// Ensure that the output of a `fn` pointer that implements `AsyncFn*` is `Sized`,
// like other built-in impls of an fn pointer, like `Fn*`.
use std::future::Future;
fn foo() -> fn() -> dyn Future<Output = ()> {
todo!()
}
async fn is_async_fn(f: impl AsyncFn()) {
f().await;
}
fn main() {
is_async_fn(foo());
//~^ ERROR the size for values of type `dyn Future<Output = ()>` cannot be known at compilation time
//~| ERROR the size for values of type `dyn Future<Output = ()>` cannot be known at compilation time
}
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