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