| // ignore-wasm32 |
| #![feature(thread_local)] |
| #![feature(cfg_target_thread_local, thread_local_internals)] |
| |
| use std::cell::RefCell; |
| |
| type Foo = std::cell::RefCell<String>; |
| |
| #[cfg(target_thread_local)] |
| #[thread_local] |
| static __KEY: std::thread::local_impl::Key<Foo> = std::thread::local_impl::Key::new(); |
| |
| #[cfg(not(target_thread_local))] |
| static __KEY: std::thread::local_impl::Key<Foo> = std::thread::local_impl::Key::new(); |
| |
| fn __getit(_: Option<&mut Option<RefCell<String>>>) -> std::option::Option<&'static Foo> { |
| __KEY.get(Default::default) |
| //~^ ERROR call to unsafe function `Key::<T>::get` is unsafe |
| } |
| |
| static FOO: std::thread::LocalKey<Foo> = std::thread::LocalKey::new(__getit); |
| //~^ ERROR call to unsafe function `LocalKey::<T>::new` is unsafe |
| |
| fn main() { |
| FOO.with(|foo| println!("{}", foo.borrow())); |
| std::thread::spawn(|| { |
| FOO.with(|foo| *foo.borrow_mut() += "foo"); |
| }) |
| .join() |
| .unwrap(); |
| FOO.with(|foo| println!("{}", foo.borrow())); |
| } |