use std::cell::UnsafeCell;

// pub fn foo(x: &UnsafeCell<u32>) {
//     unsafe {
//         let a = *x.get();
//         std::thread::yield_now();
//         let b = *x.get();
//         assert_eq!(a, b);
//     }
// }

pub fn bar(x: &u32) {
    let a = *x;
    std::thread::yield_now();
    let b = *x;
    assert_eq!(a, b);
}