//@ aux-build:block-on.rs
//@ aux-build:foreign.rs
//@ edition:2021
//@ build-pass

#![feature(async_closure)]

use std::future::Future;

extern crate block_on;
extern crate foreign;

struct NoCopy;

async fn call_once(f: impl async FnOnce()) {
    f().await;
}

fn main() {
    block_on::block_on(async {
        foreign::closure()().await;
        call_once(foreign::closure()).await;
    });
}