| #![allow(dead_code)] | |
| // Test that we report an error for unused type parameters in types and traits, | |
| // and that we offer a helpful suggestion. | |
| struct SomeStruct<A> { x: u32 } | |
| //~^ ERROR parameter `A` is never used | |
| enum SomeEnum<A> { Nothing } | |
| //~^ ERROR parameter `A` is never used | |
| // Here T might *appear* used, but in fact it isn't. | |
| enum ListCell<T> { | |
| //~^ ERROR parameter `T` is never used | |
| Cons(Box<ListCell<T>>), | |
| Nil | |
| } | |
| fn main() {} |