stabilize ptr_offset_from

Author: RalfJung

library/alloc/src/lib.rs

@@ -113,7 +113,6 @@
 #![feature(or_patterns)]
 #![feature(pattern)]
 #![feature(ptr_internals)]
-#![feature(ptr_offset_from)]
 #![feature(raw_ref_op)]
 #![feature(rustc_attrs)]
 #![feature(receiver_trait)]

library/core/src/ptr/const_ptr.rs

@@ -370,7 +370,7 @@ impl<T: ?Sized> *const T {
     ///     let zero = ptr2_other.offset_from(ptr2); // Undefined Behavior
     /// }
     /// ```
-    #[unstable(feature = "ptr_offset_from", issue = "41079")]
+    #[stable(feature = "ptr_offset_from", since = "1.46.0")]
     #[rustc_const_unstable(feature = "const_ptr_offset_from", issue = "41079")]
     #[inline]
     pub const unsafe fn offset_from(self, origin: *const T) -> isize

library/core/src/ptr/mut_ptr.rs

@@ -541,7 +541,7 @@ impl<T: ?Sized> *mut T {
     ///     let zero = ptr2_other.offset_from(ptr2); // Undefined Behavior
     /// }
     /// ```
-    #[unstable(feature = "ptr_offset_from", issue = "41079")]
+    #[stable(feature = "ptr_offset_from", since = "1.46.0")]
     #[rustc_const_unstable(feature = "const_ptr_offset_from", issue = "41079")]
     #[inline]
     pub const unsafe fn offset_from(self, origin: *const T) -> isize

src/librustdoc/lib.rs

@@ -9,7 +9,6 @@
 #![feature(nll)]
 #![feature(or_patterns)]
 #![feature(test)]
-#![feature(ptr_offset_from)]
 #![feature(crate_visibility_modifier)]
 #![feature(never_type)]
 #![feature(once_cell)]