| // 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. |
| |
| #![allow(dead_code)] |
| #![feature(rustc_attrs)] |
| |
| // Check that bounds on type parameters (other than `Self`) do not |
| // influence variance. |
| |
| #[rustc_variance] |
| trait Getter<T> { //~ ERROR types=[[o];[o];[]] |
| fn get(&self) -> T; |
| } |
| |
| #[rustc_variance] |
| trait Setter<T> { //~ ERROR types=[[o];[o];[]] |
| fn get(&self, T); |
| } |
| |
| #[rustc_variance] |
| struct TestStruct<U,T:Setter<U>> { //~ ERROR types=[[+, +];[];[]] |
| t: T, u: U |
| } |
| |
| #[rustc_variance] |
| enum TestEnum<U,T:Setter<U>> {//~ ERROR types=[[*, +];[];[]] |
| //~^ ERROR parameter `U` is never used |
| Foo(T) |
| } |
| |
| #[rustc_variance] |
| trait TestTrait<U,T:Setter<U>> { //~ ERROR types=[[o, o];[o];[]] |
| fn getter(&self, u: U) -> T; |
| } |
| |
| #[rustc_variance] |
| trait TestTrait2<U> : Getter<U> { //~ ERROR types=[[o];[o];[]] |
| } |
| |
| #[rustc_variance] |
| trait TestTrait3<U> { //~ ERROR types=[[o];[o];[]] |
| fn getter<T:Getter<U>>(&self); |
| } |
| |
| #[rustc_variance] |
| struct TestContraStruct<U,T:Setter<U>> { //~ ERROR types=[[*, +];[];[]] |
| //~^ ERROR parameter `U` is never used |
| t: T |
| } |
| |
| #[rustc_variance] |
| struct TestBox<U,T:Getter<U>+Setter<U>> { //~ ERROR types=[[*, +];[];[]] |
| //~^ ERROR parameter `U` is never used |
| t: T |
| } |
| |
| pub fn main() { } |