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Reword E0492

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This commit is contained in:
Guillaume Gomez 2015-11-30 10:29:35 +01:00
parent 52d95e6448
commit 1099af732d
1 changed files with 3 additions and 3 deletions
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6
src/librustc/diagnostics.rs
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@ -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