// Copyright 2014 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. #![feature(custom_attribute)] macro_rules! test { ($nm:ident, #[$a:meta], $i:item) => (mod $nm { #![$a] $i }); } test!(a, #[cfg(qux)], pub fn bar() { }); test!(b, #[cfg(not(qux))], pub fn bar() { }); #[qux] fn main() { a::bar(); //~^ ERROR failed to resolve. Use of undeclared type or module `a` b::bar(); }