#![allow(unused_variables)]
fn main() {
    use std::rc::Rc;
    let five = Rc::new(5);
    unsafe {
        let ptr = Rc::into_raw(five);
        Rc::increment_strong_count(ptr);
        let five = Rc::from_raw(ptr);
        assert_eq!(2, Rc::strong_count(& five));
        Rc::decrement_strong_count(ptr);
    }
}