| #![allow(unused)] | |
| fn main() { | |
| { fn f<X: ::std::marker()::Send>() {} } | |
| //~^ ERROR parenthesized type parameters may only be used with a `Fn` trait | |
| //~| WARN previously accepted | |
| { fn f() -> impl ::std::marker()::Send { } } | |
| //~^ ERROR parenthesized type parameters may only be used with a `Fn` trait | |
| //~| WARN previously accepted | |
| } | |
| #[derive(Clone)] | |
| struct X; | |
| impl ::std::marker()::Copy for X {} | |
| //~^ ERROR parenthesized type parameters may only be used with a `Fn` trait | |
| //~| WARN previously accepted |