#![allow(unused_variables)]
fn main() {
    use std::{ptr, rc::Rc};
    let inner = String::from("test");
    let ptr = inner.as_ptr();
    let rc = Rc::new(inner);
    let inner = Rc::unwrap_or_clone(rc);
    assert!(ptr::eq(ptr, inner.as_ptr()));
    let rc = Rc::new(inner);
    let rc2 = rc.clone();
    let inner = Rc::unwrap_or_clone(rc);
    assert!(! ptr::eq(ptr, inner.as_ptr()));
    let inner = Rc::unwrap_or_clone(rc2);
    assert!(ptr::eq(ptr, inner.as_ptr()));
}