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| -rw-r--r-- | src/libcore/cell.rs | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/src/libcore/cell.rs b/src/libcore/cell.rs index 202d860021e..62029a4ea01 100644 --- a/src/libcore/cell.rs +++ b/src/libcore/cell.rs @@ -592,12 +592,6 @@ impl<'b, T> DerefMut for RefMut<'b, T> { /// The `UnsafeCell<T>` type is the only legal way to obtain aliasable data that is considered /// mutable. In general, transmuting an `&T` type into an `&mut T` is considered undefined behavior. /// -/// Although it is possible to put an `UnsafeCell<T>` into static item, it is not permitted to take -/// the address of the static item if the item is not declared as mutable. This rule exists because -/// immutable static items are stored in read-only memory, and thus any attempt to mutate their -/// interior can cause segfaults. Immutable static items containing `UnsafeCell<T>` instances are -/// still useful as read-only initializers, however, so we do not forbid them altogether. -/// /// Types like `Cell<T>` and `RefCell<T>` use this type to wrap their internal data. /// /// `UnsafeCell<T>` doesn't opt-out from any marker traits, instead, types with an `UnsafeCell<T>` |