tests/ui/async-await/async-borrowck-escaping-block-error.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

//@ edition:2018
//@ run-rustfix

fn test_boxed() -> Box<impl std::future::Future<Output = u32>> {
    let x = 0u32;
    Box::new(async { x } )
    //~^ ERROR E0373
}

fn test_ref(x: &u32) -> impl std::future::Future<Output = u32> + '_ {
    async { *x }
    //~^ ERROR E0373
}

fn main() {
    let _ = test_boxed();
    let _ = test_ref(&0u32);
}