rust/tests/ui/async-await/generator-desc.rs

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// edition:2018
#![feature(async_closure)]
use std::future::Future;
async fn one() {}
async fn two() {}
fn fun<F: Future<Output = ()>>(f1: F, f2: F) {}
fn main() {
fun(async {}, async {});
//~^ ERROR mismatched types
fun(one(), two());
//~^ ERROR mismatched types
fun((async || {})(), (async || {})());
//~^ ERROR mismatched types
}