#![allow(unused_variables)]
fn main() {
    use std::{ptr, sync::Arc};
    let inner = String::from("test");
    let ptr = inner.as_ptr();
    let arc = Arc::new(inner);
    let inner = Arc::unwrap_or_clone(arc);
    assert!(ptr::eq(ptr, inner.as_ptr()));
    let arc = Arc::new(inner);
    let arc2 = arc.clone();
    let inner = Arc::unwrap_or_clone(arc);
    assert!(! ptr::eq(ptr, inner.as_ptr()));
    let inner = Arc::unwrap_or_clone(arc2);
    assert!(ptr::eq(ptr, inner.as_ptr()));
}