File: box.rs

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//@ run-pass
#![allow(unreachable_patterns)]
#![feature(box_patterns)]

struct Foo{}

pub fn main() {
    let b = Box::new(Foo{});
    let box f = &b;
    let _: &Foo = f;

    match &&&b {
        box f => {
            let _: &Foo = f;
        },
        _ => panic!(),
    }
}