// Copyright 2016 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 <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.

// ignore-tidy-linelength

#![feature(coerce_unsized)]
use std::ops::CoerceUnsized;

struct Foo<T: ?Sized, U: ?Sized> {
    a: i32,
    b: T,
    c: U,
}

impl<T, U> CoerceUnsized<Foo<U, T>> for Foo<T, U> {}
//~^ ERROR E0375
//~| NOTE requires multiple coercions
//~| NOTE `CoerceUnsized` may only be implemented for a coercion between structures with one field being coerced
//~| NOTE currently, 2 fields need coercions: b (T to U), c (U to T)

fn main() {}
