| // Copyright 2018 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. |
| |
| #![deny(where_clauses_object_safety)] |
| |
| trait Trait {} |
| |
| trait X { |
| fn foo(&self) where Self: Trait; //~ ERROR the trait `X` cannot be made into an object |
| //~^ WARN this was previously accepted by the compiler but is being phased out |
| } |
| |
| impl X for () { |
| fn foo(&self) {} |
| } |
| |
| impl Trait for dyn X {} |
| |
| pub fn main() { |
| // Check that this does not segfault. |
| <X as X>::foo(&()); |
| } |
