// Copyright 2016 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #![allow(dead_code)] #![feature(rustc_attrs)] macro_rules! foo ( () => ( #[derive_Clone] //~ WARN attributes of the form struct T; ); ); macro_rules! bar ( ($e:item) => ($e) ); foo!(); bar!( #[derive_Clone] //~ WARN attributes of the form struct S; ); #[rustc_error] fn main() {} //~ ERROR compilation successful