serde/test_suite/tests/compile-fail/borrow/duplicate_variant.rs

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// Copyright 2017 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(Deserialize)]
struct Str<'a>(&'a str);
#[derive(Deserialize)] //~ ERROR: proc-macro derive panicked
enum Test<'a> {
#[serde(borrow)] //~^^ HELP: duplicate serde attribute `borrow`
S(#[serde(borrow)] Str<'a>)
}
fn main() {}