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1 | // Copyright 2015 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 a "pass-through" object-lifetime-default that produces errors. | |
12 | ||
13 | #![allow(dead_code)] | |
14 | ||
15 | trait SomeTrait { | |
16 | fn dummy(&self) { } | |
17 | } | |
18 | ||
19 | struct MyBox<T:?Sized> { | |
20 | r: Box<T> | |
21 | } | |
22 | ||
23 | fn deref<T>(ss: &T) -> T { | |
24 | // produces the type of a deref without worrying about whether a | |
25 | // move out would actually be legal | |
26 | loop { } | |
27 | } | |
28 | ||
29 | fn load0(ss: &MyBox<SomeTrait>) -> MyBox<SomeTrait> { | |
c1a9b12d | 30 | deref(ss) |
85aaf69f SL |
31 | } |
32 | ||
33 | fn load1<'a,'b>(a: &'a MyBox<SomeTrait>, | |
34 | b: &'b MyBox<SomeTrait>) | |
35 | -> &'b MyBox<SomeTrait> | |
36 | { | |
54a0048b | 37 | a //~ ERROR E0312 |
85aaf69f SL |
38 | } |
39 | ||
62682a34 | 40 | fn load2<'a>(ss: &MyBox<SomeTrait+'a>) -> MyBox<SomeTrait+'a> { |
c1a9b12d | 41 | load0(ss) //~ ERROR mismatched types |
62682a34 SL |
42 | } |
43 | ||
85aaf69f SL |
44 | fn main() { |
45 | } |