src/test/ui/regions/regions-close-over-type-parameter-successfully.rs

   1 // run-pass
   2 // A test where we (successfully) close over a reference into
   3 // an object.
   4
   5 trait SomeTrait { fn get(&self) -> isize; }
   6
   7 impl<'a> SomeTrait for &'a isize {
   8     fn get(&self) -> isize {
   9         **self
  10     }
  11 }
  12
  13 fn make_object<'a,A:SomeTrait+'a>(v: A) -> Box<dyn SomeTrait+'a> {
  14     Box::new(v) as Box<dyn SomeTrait+'a>
  15 }
  16
  17 fn main() {
  18     let i: isize = 22;
  19     let obj = make_object(&i);
  20     assert_eq!(22, obj.get());
  21 }