// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. macro_rules! m { ($my_type: ty) => { impl $my_type for u8 {} } } trait Trait {} m!(Tr); m!(&'static u8); //~ ERROR expected a trait, found type fn main() {}