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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 | // Ensure that OIBIT checks `T` when it encounters a `PhantomData<T>` field, instead of checking | |
12 | // the `PhantomData<T>` type itself (which almost always implements a "default" trait | |
13 | // (`impl Trait for ..`)) | |
14 | ||
15 | #![feature(optin_builtin_traits)] | |
16 | ||
9346a6ac | 17 | use std::marker::{PhantomData}; |
c34b1796 | 18 | |
9346a6ac | 19 | unsafe trait Zen {} |
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20 | |
21 | unsafe impl Zen for .. {} | |
22 | ||
23 | unsafe impl<'a, T: 'a> Zen for &'a T where T: Sync {} | |
24 | ||
25 | struct Guard<'a, T: 'a> { | |
26 | _marker: PhantomData<&'a T>, | |
27 | } | |
28 | ||
29 | struct Nested<T>(T); | |
30 | ||
31 | fn is_zen<T: Zen>(_: T) {} | |
32 | ||
33 | fn not_sync<T>(x: Guard<T>) { | |
54a0048b | 34 | is_zen(x) //~ error: `T: std::marker::Sync` is not satisfied |
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35 | } |
36 | ||
37 | fn nested_not_sync<T>(x: Nested<Guard<T>>) { | |
54a0048b | 38 | is_zen(x) //~ error: `T: std::marker::Sync` is not satisfied |
c34b1796 AL |
39 | } |
40 | ||
41 | fn main() {} |