/
issue-43733-2.rs
39 lines (33 loc) · 1.28 KB
/
issue-43733-2.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
// Copyright 2017 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.
#![feature(const_fn, drop_types_in_const)]
#![feature(cfg_target_thread_local, thread_local_internals)]
// On platforms *without* `#[thread_local]`, use
// a custom non-`Sync` type to fake the same error.
#[cfg(not(target_thread_local))]
struct Key<T> {
_data: std::cell::UnsafeCell<Option<T>>,
_flag: std::cell::Cell<bool>,
}
#[cfg(not(target_thread_local))]
impl<T> Key<T> {
const fn new() -> Self {
Key {
_data: std::cell::UnsafeCell::new(None),
_flag: std::cell::Cell::new(false),
}
}
}
#[cfg(target_thread_local)]
use std::thread::__FastLocalKeyInner as Key;
static __KEY: Key<()> = Key::new();
//~^ ERROR `std::cell::UnsafeCell<std::option::Option<()>>: std::marker::Sync` is not satisfied
//~| ERROR `std::cell::Cell<bool>: std::marker::Sync` is not satisfied
fn main() {}