diff options
| -rw-r--r-- | src/librustc/diagnostics.rs | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/librustc/diagnostics.rs b/src/librustc/diagnostics.rs index bdfdc7f4786..6e94ac83d55 100644 --- a/src/librustc/diagnostics.rs +++ b/src/librustc/diagnostics.rs @@ -1950,9 +1950,9 @@ const E: &'static Cell<usize> = &D.a; // error const F: &'static C = &D; // error ``` -This is because cell types internally use `UnsafeCell`, which isn't `Sync`. -These aren't thread safe, and thus can't be placed in statics. In this case, -`StaticMutex` would work just fine, but it isn't stable yet: +This is because cell types do operations that are not thread-safe. Due to this, +they don't implement Sync and thus can't be placed in statics. In this +case, `StaticMutex` would work just fine, but it isn't stable yet: https://doc.rust-lang.org/nightly/std/sync/struct.StaticMutex.html However, if you still wish to use these types, you can achieve this by an unsafe |