// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. pub trait Foo { type Assoc; } pub trait Bar: Foo { fn new(&self, b: & Bar //~ ERROR the trait `Bar` cannot be made into an object ); } fn main() {}