Simplify the implementation of get_mut (no unsafe)

2020-11-04 14:54:22 +01:00 · 2020-11-04 14:54:22 +01:00 · 69e5729c58
commit 69e5729c58
parent 56293097f7
1 changed files with 1 additions and 2 deletions
--- a/library/core/src/cell.rs
+++ b/library/core/src/cell.rs
@ -1733,8 +1733,7 @@ impl<T: ?Sized> UnsafeCell<T> {
    #[inline]
    #[unstable(feature = "unsafe_cell_get_mut", issue = "76943")]
    pub fn get_mut(&mut self) -> &mut T {
-        // SAFETY: (outer) `&mut` guarantees unique access.
-        unsafe { &mut *self.get() }
+        &mut self.value
    }

    /// Gets a mutable pointer to the wrapped value.