| // 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. |
| |
| // pretty-expanded FIXME #23616 |
| |
| #![feature(core)] |
| #![feature(const_fn)] |
| |
| |
| use std::marker; |
| use std::cell::UnsafeCell; |
| |
| struct MyUnsafePack<T>(UnsafeCell<T>); |
| |
| unsafe impl<T: Send> Sync for MyUnsafePack<T> {} |
| |
| struct MyUnsafe<T> { |
| value: MyUnsafePack<T> |
| } |
| |
| impl<T> MyUnsafe<T> { |
| fn forbidden(&self) {} |
| } |
| |
| unsafe impl<T: Send> Sync for MyUnsafe<T> {} |
| |
| enum UnsafeEnum<T> { |
| VariantSafe, |
| VariantUnsafe(UnsafeCell<T>) |
| } |
| |
| unsafe impl<T: Send> Sync for UnsafeEnum<T> {} |
| |
| static STATIC1: UnsafeEnum<isize> = UnsafeEnum::VariantSafe; |
| |
| static STATIC2: MyUnsafePack<isize> = MyUnsafePack(UnsafeCell::new(1)); |
| const CONST: MyUnsafePack<isize> = MyUnsafePack(UnsafeCell::new(1)); |
| static STATIC3: MyUnsafe<isize> = MyUnsafe{value: CONST}; |
| |
| static STATIC4: &'static MyUnsafePack<isize> = &STATIC2; |
| |
| struct Wrap<T> { |
| value: T |
| } |
| |
| unsafe impl<T: Send> Sync for Wrap<T> {} |
| |
| static UNSAFE: MyUnsafePack<isize> = MyUnsafePack(UnsafeCell::new(2)); |
| static WRAPPED_UNSAFE: Wrap<&'static MyUnsafePack<isize>> = Wrap { value: &UNSAFE }; |
| |
| fn main() { |
| let a = &STATIC1; |
| |
| STATIC3.forbidden() |
| } |