// 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. pub fn main() { let x = "Hello " + "World!"; // Make sure that the span outputs a warning // for not having an implementation for std::ops::Add // that won't output for the above string concatenation let y = World::Hello + World::Goodbye; } enum World { Hello, Goodbye, }