tests/ui/traits/inductive-overflow/supertrait.rs

   1 // Regression test for #29859, supertrait version. This example
   2 // allowed arbitrary trait bounds to be synthesized.
   3
   4 trait Magic: Copy {}
   5 impl<T: Magic> Magic for T {}
   6
   7 fn copy<T: Magic>(x: T) -> (T, T) { (x, x) }
   8
   9 #[derive(Debug)]
  10 struct NoClone;
  11
  12 fn main() {
  13     let (a, b) = copy(NoClone); //~ ERROR E0275
  14     println!("{:?} {:?}", a, b);
  15 }