| // run-pass |
| #![allow(dead_code)] |
| #![allow(unused_variables)] |
| // Testing creating two vtables with the same self type, but different |
| // traits. |
| |
| #![feature(box_syntax)] |
| |
| use std::any::Any; |
| |
| trait Wrap { |
| fn get(&self) -> isize; |
| fn wrap(self: Box<Self>) -> Box<dyn Any+'static>; |
| } |
| |
| impl Wrap for isize { |
| fn get(&self) -> isize { |
| *self |
| } |
| fn wrap(self: Box<isize>) -> Box<dyn Any+'static> { |
| self as Box<dyn Any+'static> |
| } |
| } |
| |
| fn is<T:Any>(x: &dyn Any) -> bool { |
| x.is::<T>() |
| } |
| |
| fn main() { |
| let x = box 22isize as Box<dyn Wrap>; |
| println!("x={}", x.get()); |
| let y = x.wrap(); |
| } |