src/test/ui/unique-object-noncopyable.rs

   1 #![feature(box_syntax)]
   2
   3 trait Foo {
   4     fn f(&self);
   5 }
   6
   7 struct Bar {
   8     x: isize,
   9 }
  10
  11 impl Drop for Bar {
  12     fn drop(&mut self) {}
  13 }
  14
  15 impl Foo for Bar {
  16     fn f(&self) {
  17         println!("hi");
  18     }
  19 }
  20
  21 fn main() {
  22     let x = box Bar { x: 10 };
  23     let y: Box<dyn Foo> = x as Box<dyn Foo>;
  24     let _z = y.clone(); //~ ERROR the method
  25 }