#[allow(unused_imports)]
use std::io;
use std::mem;


fn leak( s : &String) -> String {
    println!("{}", s);
    std::mem::drop(s);
    String::from("haha gone")
}

fn main() {
    let x = "hello";
    let y = String::from(x);
    let y = leak(&y);
    println!("Hello, {}! {}", y, mem::size_of::<String>());
}