rust/tests/ui/issues/issue-7364.stderr
Nilstrieb 6d0c91fda3 Add rustc_on_unimplemented on Sync for cell types
Suggest using a lock instead.
2023-01-19 21:09:25 +01:00

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error[E0277]: `RefCell<isize>` cannot be shared between threads safely
--> $DIR/issue-7364.rs:4:15
|
LL | static boxed: Box<RefCell<isize>> = Box::new(RefCell::new(0));
| ^^^^^^^^^^^^^^^^^^^ `RefCell<isize>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `RefCell<isize>`
= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
= note: required for `Unique<RefCell<isize>>` to implement `Sync`
= note: required because it appears within the type `Box<RefCell<isize>>`
= note: shared static variables must have a type that implements `Sync`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.