// Copyright 2017 Serde Developers // // 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_use] extern crate serde_derive; #[derive(Deserialize)] //~ ERROR: proc-macro derive panicked #[serde(default)] //~^ HELP: #[serde(default)] can only be used on structs enum E { S { f: u8 }, }