// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#![feature(conservative_impl_trait)]
#![allow(unused)]

fn main() {
    { fn f<X: ::std::marker()::Send>() {} }
    //~^ ERROR parenthesized parameters may only be used with a trait
    //~| WARN previously accepted

    { fn f() -> impl ::std::marker()::Send { } }
    //~^ ERROR parenthesized parameters may only be used with a trait
    //~| WARN previously accepted
}

#[derive(Clone)]
struct X;

impl ::std::marker()::Copy for X {}
//~^ ERROR parenthesized parameters may only be used with a trait
//~| WARN previously accepted