#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(lazy_get)]
use std::cell::LazyCell;
fn main() {
    let mut lazy = LazyCell::new(|| 92);
    assert_eq!(LazyCell::get_mut(& mut lazy), None);
    let _ = LazyCell::force(&lazy);
    *LazyCell::get_mut(&mut lazy).unwrap() = 44;
    assert_eq!(* lazy, 44);
}