main.rs

// https://github.com/rust-lang/rust/issues/49733
// https://doc.rust-lang.org/1.7.0/book/box-syntax-and-patterns.html
#![feature(box_syntax)]

#[derive(Debug)]
struct Bix(u8);

impl Bix {
    pub fn new(x: u8) -> Self {
        Bix(*box x) // for demo only, box serves no practical purpose here
    }
}

fn main() {
    println!("Hello, box1!");
    let bix = Bix::new(42);
    dbg!(&bix);
}