| // 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. |
| #![feature(arbitrary_self_types)] |
| |
| use std::rc::Rc; |
| |
| trait Foo { |
| fn foo(self: &Rc<Self>) -> usize; |
| } |
| |
| trait Bar { |
| fn foo(self: &Rc<Self>) -> usize where Self: Sized; |
| fn bar(self: Rc<Self>) -> usize; |
| } |
| |
| impl Foo for usize { |
| fn foo(self: &Rc<Self>) -> usize { |
| **self |
| } |
| } |
| |
| impl Bar for usize { |
| fn foo(self: &Rc<Self>) -> usize { |
| **self |
| } |
| |
| fn bar(self: Rc<Self>) -> usize { |
| *self |
| } |
| } |
| |
| fn make_foo() { |
| let x = Rc::new(5usize) as Rc<Foo>; |
| //~^ ERROR E0038 |
| //~| ERROR E0038 |
| } |
| |
| fn make_bar() { |
| let x = Rc::new(5usize) as Rc<Bar>; |
| x.bar(); |
| } |
| |
| fn main() {} |