1 // Copyright 2021 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 main()5fn main() { 6 println!("Hello, world!"); 7 #[cfg(is_new_rustc)] 8 println!("Is new rustc!"); 9 #[cfg(is_old_rustc)] 10 println!("Is old rustc!"); 11 #[cfg(is_android)] 12 println!("Is android!"); 13 #[cfg(is_mac)] 14 println!("Is darwin!"); 15 } 16