| error[E0277]: `Cell<i32>` cannot be shared between threads safely |
| --> $DIR/reentrantlockguard-sync.rs:13:15 |
| | |
| LL | test_sync(guard); |
| | --------- ^^^^^ `Cell<i32>` cannot be shared between threads safely |
| | | |
| | required by a bound introduced by this call |
| | |
| = help: the trait `Sync` is not implemented for `Cell<i32>`, which is required by `ReentrantLockGuard<'_, Cell<i32>>: Sync` |
| = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead |
| = note: required for `ReentrantLockGuard<'_, Cell<i32>>` to implement `Sync` |
| note: required by a bound in `test_sync` |
| --> $DIR/reentrantlockguard-sync.rs:7:17 |
| | |
| LL | fn test_sync<T: Sync>(_t: T) {} |
| | ^^^^ required by this bound in `test_sync` |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
