rust/tests/ui/sync/suggest-ref-cell.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<()>` cannot be shared between threads safely
--> $DIR/suggest-ref-cell.rs:8:20
|
LL | require_sync::<std::cell::RefCell<()>>();
| ^^^^^^^^^^^^^^^^^^^^^^ `RefCell<()>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `RefCell<()>`
= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: required by a bound in `require_sync`
--> $DIR/suggest-ref-cell.rs:3:20
|
LL | fn require_sync<T: Sync>() {}
| ^^^^ required by this bound in `require_sync`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.