rust/tests/ui/lint/must_not_suspend/mutex.rs

// edition:2018
#![feature(must_not_suspend)]
#![deny(must_not_suspend)]

async fn other() {}

pub async fn uhoh(m: std::sync::Mutex<()>) {
    let _guard = m.lock().unwrap(); //~ ERROR `MutexGuard` held across
    other().await;
}

fn main() {
}
lock types 2021-09-27 10:43:30 -05:00			`// edition:2018`
Feature gate and make must_not_suspend allow-by-default This lint is not yet ready for stable use, primarily due to false positives in edge cases; we want to test it out more before stabilizing. 2021-10-12 11:10:05 -05:00			`#![feature(must_not_suspend)]`
lock types 2021-09-27 10:43:30 -05:00			`#![deny(must_not_suspend)]`

			`async fn other() {}`

			`pub async fn uhoh(m: std::sync::Mutex<()>) {`
			let _guard = m.lock().unwrap(); //~ ERROR `MutexGuard` held across
			`other().await;`
			`}`

			`fn main() {`
			`}`