src/test/ui/autoref-autoderef/autoderef-method-on-trait.rs

   1 // run-pass
   2 #![allow(non_camel_case_types)]
   3
   4 trait double {
   5     fn double(self: Box<Self>) -> usize;
   6 }
   7
   8 impl double for usize {
   9     fn double(self: Box<usize>) -> usize { *self * 2 }
  10 }
  11
  12 pub fn main() {
  13     let x: Box<_> = Box::new(Box::new(3usize) as Box<dyn double>);
  14     assert_eq!(x.double(), 6);
  15 }