src/test/ui/generics/generic-exterior-unique.rs

// run-pass
#![feature(box_syntax)]

struct Recbox<T> {x: Box<T>}

fn reclift<T>(t: T) -> Recbox<T> { return Recbox {x: box t}; }

pub fn main() {
    let foo: isize = 17;
    let rbfoo: Recbox<isize> = reclift::<isize>(foo);
    assert_eq!(*rbfoo.x, foo);
}