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1 | // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
11 | // Test that we correctly infer variance for type parameters in | |
12 | // various types and traits. | |
13 | ||
14 | #![feature(rustc_attrs)] | |
15 | ||
16 | #[rustc_variance] | |
9e0c209e | 17 | struct TestImm<A, B> { //~ ERROR [+, +] |
85aaf69f SL |
18 | x: A, |
19 | y: B, | |
20 | } | |
21 | ||
22 | #[rustc_variance] | |
9e0c209e | 23 | struct TestMut<A, B:'static> { //~ ERROR [+, o] |
85aaf69f SL |
24 | x: A, |
25 | y: &'static mut B, | |
26 | } | |
27 | ||
28 | #[rustc_variance] | |
9e0c209e | 29 | struct TestIndirect<A:'static, B:'static> { //~ ERROR [+, o] |
85aaf69f SL |
30 | m: TestMut<A, B> |
31 | } | |
32 | ||
33 | #[rustc_variance] | |
9e0c209e | 34 | struct TestIndirect2<A:'static, B:'static> { //~ ERROR [o, o] |
85aaf69f SL |
35 | n: TestMut<A, B>, |
36 | m: TestMut<B, A> | |
37 | } | |
38 | ||
041b39d2 | 39 | trait Getter<A> { |
85aaf69f SL |
40 | fn get(&self) -> A; |
41 | } | |
42 | ||
041b39d2 | 43 | trait Setter<A> { |
85aaf69f SL |
44 | fn set(&mut self, a: A); |
45 | } | |
46 | ||
85aaf69f | 47 | #[rustc_variance] |
9e0c209e | 48 | struct TestObject<A, R> { //~ ERROR [o, o] |
85aaf69f SL |
49 | n: Box<Setter<A>+Send>, |
50 | m: Box<Getter<R>+Send>, | |
51 | } | |
52 | ||
53 | fn main() {} |