diff options
| -rw-r--r-- | library/core/src/cell.rs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/library/core/src/cell.rs b/library/core/src/cell.rs index de212581e82..26be316a7b9 100644 --- a/library/core/src/cell.rs +++ b/library/core/src/cell.rs @@ -2115,7 +2115,6 @@ impl<T: ?Sized> UnsafeCell<T> { /// # Examples /// /// ``` - /// # #![feature(unsafe_cell_from_mut)] /// use std::cell::UnsafeCell; /// /// let mut val = 42; @@ -2125,7 +2124,9 @@ impl<T: ?Sized> UnsafeCell<T> { /// assert_eq!(*uc.get_mut(), 41); /// ``` #[inline(always)] - #[unstable(feature = "unsafe_cell_from_mut", issue = "111645")] + #[stable(feature = "unsafe_cell_from_mut", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "unsafe_cell_from_mut", since = "CURRENT_RUSTC_VERSION")] + #[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))] pub const fn from_mut(value: &mut T) -> &mut UnsafeCell<T> { // SAFETY: `UnsafeCell<T>` has the same memory layout as `T` due to #[repr(transparent)]. unsafe { &mut *(value as *mut T as *mut UnsafeCell<T>) } |