[rustc.git] / src / test / ui / async-await / issue-64130-non-send-future-diags.rs

// edition:2018

// This tests the basic example case for the async-await-specific error.

use std::sync::Mutex;

fn is_send<T: Send>(t: T) { }

async fn foo() {
    bar(&Mutex::new(22)).await;
}

async fn bar(x: &Mutex<u32>) {
    let g = x.lock().unwrap();
    baz().await;
}

async fn baz() { }

fn main() {
    is_send(foo());
    //~^ ERROR future cannot be sent between threads safely
}
Commit	Line	Data
e1599b0c XL	1	// edition:2018
e1599b0c XL	2
60c5eb7d	3	// This tests the basic example case for the async-await-specific error.
e1599b0c	4
60c5eb7d	5	use std::sync::Mutex;
e1599b0c	6
60c5eb7d	7	fn is_send<T: Send>(t: T) { }
e1599b0c XL	8
	9	async fn foo() {
	10	bar(&Mutex::new(22)).await;
	11	}
	12
	13	async fn bar(x: &Mutex<u32>) {
	14	let g = x.lock().unwrap();
	15	baz().await;
	16	}
	17
60c5eb7d	18	async fn baz() { }
e1599b0c XL	19
	20	fn main() {
	21	is_send(foo());
60c5eb7d	22	//~^ ERROR future cannot be sent between threads safely
e1599b0c	23	}