// Copyright 2015 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.

fn changer<'a>(mut things: Box<Iterator<Item=&'a mut u8>>) {
    for item in *things { *item = 0 }
//~^ ERROR the trait `core::marker::Sized` is not implemented for the type `core::iter::Iterator
//~^^ ERROR
//~^^^ ERROR
// FIXME(#21528) error should be reported once, not thrice
}

fn main() {}