// Copyright 2018 Serde Developers
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#[macro_use]
extern crate serde_derive;

#[derive(Serialize)]
struct Foo(u32, #[serde(flatten)] HashMap<String, String>);
//~^^ ERROR: #[serde(flatten)] cannot be used on tuple structs

fn main() {}