| // Copyright 2015 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. |
| |
| // ignore-tidy-linelength |
| |
| #![feature(optin_builtin_traits)] |
| |
| struct Managed; |
| impl !Send for Managed {} |
| impl !Sync for Managed {} |
| |
| use std::cell::UnsafeCell; |
| |
| struct MySync { |
| t: *mut u8 |
| } |
| |
| unsafe impl Sync for MySync {} |
| |
| struct MyNotSync { |
| t: *mut u8 |
| } |
| |
| impl !Sync for MyNotSync {} |
| |
| struct MyTypeWUnsafe { |
| t: UnsafeCell<u8> |
| } |
| |
| struct MyTypeManaged { |
| t: Managed |
| } |
| |
| fn is_sync<T: Sync>() {} |
| |
| fn main() { |
| is_sync::<MySync>(); |
| is_sync::<MyNotSync>(); |
| //~^ ERROR `MyNotSync: std::marker::Sync` is not satisfied |
| |
| is_sync::<MyTypeWUnsafe>(); |
| //~^ ERROR `std::cell::UnsafeCell<u8>: std::marker::Sync` is not satisfied |
| |
| is_sync::<MyTypeManaged>(); |
| //~^ ERROR `Managed: std::marker::Sync` is not satisfied |
| } |