src/test/ui/unique/unique-swap.rs

   1 // run-pass
   2 #![feature(box_syntax)]
   3
   4 use std::mem::swap;
   5
   6 pub fn main() {
   7     let mut i: Box<_> = box 100;
   8     let mut j: Box<_> = box 200;
   9     swap(&mut i, &mut j);
  10     assert_eq!(i, box 200);
  11     assert_eq!(j, box 100);
  12 }