#![allow(unused_variables)]
#![feature(thin_box)]
fn main() {
    use std::boxed::ThinBox;
    let five = ThinBox::new(5);
    let thin_slice = ThinBox::<[i32]>::new_unsize([1, 2, 3, 4]);
    let size_of_ptr = size_of::<*const ()>();
    assert_eq!(size_of_ptr, size_of_val(& five));
    assert_eq!(size_of_ptr, size_of_val(& thin_slice));
}