src/test/ui/threads-sendsync/issue-43733.rs

   1 // revisions: mir thir
   2 // [thir]compile-flags: -Z thir-unsafeck
   3 // normalize-stderr-test: "__FastLocalKeyInner::<T>::get" -> "$$LOCALKEYINNER::<T>::get"
   4 // normalize-stderr-test: "__OsLocalKeyInner::<T>::get" -> "$$LOCALKEYINNER::<T>::get"
   5
   6 #![feature(thread_local)]
   7 #![feature(cfg_target_thread_local, thread_local_internals)]
   8
   9 use std::cell::RefCell;
  10
  11 type Foo = std::cell::RefCell<String>;
  12
  13 #[cfg(target_thread_local)]
  14 #[thread_local]
  15 static __KEY: std::thread::__FastLocalKeyInner<Foo> = std::thread::__FastLocalKeyInner::new();
  16
  17 #[cfg(not(target_thread_local))]
  18 static __KEY: std::thread::__OsLocalKeyInner<Foo> = std::thread::__OsLocalKeyInner::new();
  19
  20 fn __getit(_: Option<&mut Option<RefCell<String>>>) -> std::option::Option<&'static Foo> {
  21     __KEY.get(Default::default)
  22     //[mir]~^ ERROR call to unsafe function is unsafe
  23     //[thir]~^^ ERROR call to unsafe function `__
  24 }
  25
  26 static FOO: std::thread::LocalKey<Foo> = std::thread::LocalKey::new(__getit);
  27 //[mir]~^ ERROR call to unsafe function is unsafe
  28 //[thir]~^^ ERROR call to unsafe function `LocalKey::<T>::new`
  29
  30 fn main() {
  31     FOO.with(|foo| println!("{}", foo.borrow()));
  32     std::thread::spawn(|| {
  33         FOO.with(|foo| *foo.borrow_mut() += "foo");
  34     })
  35     .join()
  36     .unwrap();
  37     FOO.with(|foo| println!("{}", foo.borrow()));
  38 }