| // 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. |
| |
| // Test that the variance computation considers types/regions that |
| // appear in projections to be invariant. |
| |
| #![feature(rustc_attrs)] |
| |
| trait Trait<'a> { |
| type Type; |
| |
| fn method(&'a self) { } |
| } |
| |
| #[rustc_variance] |
| struct Foo<'a, T : Trait<'a>> { //~ ERROR ItemVariances(types=[[+];[];[]], regions=[[-];[];[]]) |
| field: (T, &'a ()) |
| } |
| |
| #[rustc_variance] |
| struct Bar<'a, T : Trait<'a>> { //~ ERROR ItemVariances(types=[[o];[];[]], regions=[[o];[];[]]) |
| field: <T as Trait<'a>>::Type |
| } |
| |
| fn main() { } |
