| // 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. |
| |
| #![allow(dead_code)] |
| |
| // Test that even when `Self` is only used in contravariant position, it |
| // is treated as invariant. |
| |
| trait Get { |
| fn get(&self); |
| } |
| |
| fn get_min_from_max<'min, 'max, G>() |
| where 'max : 'min, G : 'max, &'max G : Get |
| { |
| impls_get::<&'min G>(); //~ ERROR mismatched types |
| } |
| |
| fn get_max_from_min<'min, 'max, G>() |
| where 'max : 'min, G : 'max, &'min G : Get |
| { |
| // Previously OK, but now error because traits are invariant with |
| // respect to all inputs. |
| |
| impls_get::<&'max G>(); //~ ERROR mismatched types |
| } |
| |
| fn impls_get<G>() where G : Get { } |
| |
| fn main() { } |