derived cloning, expanded

clone.rs

priv use std::prelude::*;
priv extern mod std;




/* This version works: */
// Box{ unbox : b.unbox.clone() }

/* This version doesn't: */

mod __std_macros {
    #[macro_escape];
    #[doc(hidden)];
    priv use std::prelude::*;
    #[cfg(not(debug))]
    #[macro_escape]
    mod debug_macro {
        priv use std::prelude::*;
    }
}
fn main() { }
#[deriving(Clone)]
struct Box<T> {
    unbox: @T,
}
#[doc = "Automatically derived."]
pub impl <T: ::std::clone::Clone> ::std::clone::Clone for Box<T> {
    fn clone(&self) -> Box<T> {
        match *self {
            Box{unbox: ref __self_0_0} => Box{unbox: __self_0_0.clone(),}
        }
    }
}
fn op<T>(b: Box<T>) -> Box<T> { b.clone() }