| // Copyright 2014 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. |
| |
| // Check that we correctly prevent users from making trait objects |
| // form traits that make use of `Self` in an argument or return |
| // position, unless `where Self : Sized` is present.. |
| |
| trait Bar { |
| fn bar(&self, x: &Self); |
| } |
| |
| trait Baz { |
| fn bar(&self) -> Self; |
| } |
| |
| trait Quux { |
| fn get(&self, s: &Self) -> Self where Self : Sized; |
| } |
| |
| fn make_bar<T:Bar>(t: &T) -> &Bar { |
| //~^ ERROR E0038 |
| loop { } |
| } |
| |
| fn make_baz<T:Baz>(t: &T) -> &Baz { |
| //~^ ERROR E0038 |
| t |
| } |
| |
| fn make_quux<T:Quux>(t: &T) -> &Quux { |
| t |
| } |
| |
| fn make_quux_explicit<T:Quux>(t: &T) -> &Quux { |
| t as &Quux |
| } |
| |
| fn main() { |
| } |
