src/test/ui/traits/trait-region-pointer-simple.rs

   1 // run-pass
   2 trait Foo {
   3     fn f(&self) -> isize;
   4 }
   5
   6 struct A {
   7     x: isize
   8 }
   9
  10 impl Foo for A {
  11     fn f(&self) -> isize {
  12         println!("Today's number is {}", self.x);
  13         return self.x;
  14     }
  15 }
  16
  17 pub fn main() {
  18     let a = A { x: 3 };
  19     let b = (&a) as &dyn Foo;
  20     assert_eq!(b.f(), 3);
  21 }