diff options
| -rw-r--r-- | src/libcore/cell.rs | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/libcore/cell.rs b/src/libcore/cell.rs index e3292ecc1d1..4afeec66758 100644 --- a/src/libcore/cell.rs +++ b/src/libcore/cell.rs @@ -1545,7 +1545,8 @@ impl<T: ?Sized> UnsafeCell<T> { #[stable(feature = "rust1", since = "1.0.0")] pub const fn get(&self) -> *mut T { // We can just cast the pointer from `UnsafeCell<T>` to `T` because of - // #[repr(transparent)] + // #[repr(transparent)]. This exploits libstd's special status, there is + // no guarantee for user code that this will work in future versions of the compiler! self as *const UnsafeCell<T> as *const T as *mut T } @@ -1572,10 +1573,11 @@ impl<T: ?Sized> UnsafeCell<T> { /// assert_eq!(uc.into_inner(), 5); /// ``` #[inline] - #[unstable(feature = "unsafe_cell_raw_get", issue = "0")] + #[unstable(feature = "unsafe_cell_raw_get", issue = "66358")] pub const fn raw_get(self: *const Self) -> *mut T { // We can just cast the pointer from `UnsafeCell<T>` to `T` because of - // #[repr(transparent)] + // #[repr(transparent)]. This exploits libstd's special status, there is + // no guarantee for user code that this will work in future versions of the compiler! self as *const T as *mut T } } |