#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(atomic_try_update)]
use std::sync::atomic::{AtomicI8, Ordering};
fn main() {
    let x = AtomicI8::new(7);
    assert_eq!(x.update(Ordering::SeqCst, Ordering::SeqCst, | x | x + 1), 7);
    assert_eq!(x.update(Ordering::SeqCst, Ordering::SeqCst, | x | x + 1), 8);
    assert_eq!(x.load(Ordering::SeqCst), 9);
}