tests/ui/issues/issue-14399.rs

   1 // run-pass
   2 // #14399
   3 // We'd previously ICE if we had a method call whose return
   4 // value was coerced to a trait object. (v.clone() returns Box<B1>
   5 // which is coerced to Box<A>).
   6
   7 // pretty-expanded FIXME #23616
   8
   9 #[derive(Clone)]
  10 struct B1;
  11
  12 trait A { fn foo(&self) {} }
  13 impl A for B1 {}
  14
  15 fn main() {
  16     let v: Box<_> = Box::new(B1);
  17     let _c: Box<dyn A> = v.clone();
  18 }