// 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 <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.
struct Ref<'a> {
    x: &'a u32,
}

fn foo<'a, 'b>(mut x: Vec<Ref<'a>>, y: Ref<'b>)
    where &'a (): Sized,
          &'b u32: Sized
{
    x.push(y); //~ ERROR lifetime mismatch
}

fn main() {}
