| //@ run-rustfix | |
| #![allow(dead_code)] | |
| #[derive(Clone)] | |
| struct Wrapper<T>(T); | |
| struct OnlyCopyIfDisplay<T>(std::marker::PhantomData<T>); | |
| impl<T: std::fmt::Display> Clone for OnlyCopyIfDisplay<T> { | |
| fn clone(&self) -> Self { | |
| OnlyCopyIfDisplay(std::marker::PhantomData) | |
| } | |
| } | |
| impl<T: std::fmt::Display> Copy for OnlyCopyIfDisplay<T> {} | |
| impl<S: std::fmt::Display> Copy for Wrapper<OnlyCopyIfDisplay<S>> {} | |
| //~^ ERROR the trait `Copy` cannot be implemented for this type | |
| fn main() {} |