| // Copyright 2016 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 changing what a `type` points to does not go unnoticed |
| // by the variance analysis. |
| |
| // compile-flags: -Z query-dep-graph |
| |
| #![feature(rustc_attrs)] |
| #![allow(dead_code)] |
| #![allow(unused_variables)] |
| |
| fn main() { } |
| |
| struct Foo<T> { |
| f: T |
| } |
| |
| #[rustc_if_this_changed(Krate)] |
| type TypeAlias<T> = Foo<T>; |
| |
| #[rustc_then_this_would_need(ItemVariances)] //~ ERROR OK |
| struct Use<T> { |
| x: TypeAlias<T> |
| } |
