This is a tracking issue for indexing methods on raw slices: get_unchecked(_mut) and as_(mut_/non_null_)ptr on raw slices (mutable and const raw pointers and NonNull).

The feature gate for the issue is #![feature(slice_ptr_get)].

Public API

impl<T> *mut [T] {
    pub const fn as_mut_ptr(self) -> *mut T {}
    pub unsafe fn get_unchecked_mut<I>(self, index: I) -> *mut I::Output where I: SliceIndex<[T]>;
}
impl<T> *const [T] {
    pub const fn as_ptr(self) -> *const T {}
    pub unsafe fn get_unchecked<I>(self, index: I) -> *const I::Output where I: SliceIndex<[T]>;
}
impl<T> NonNull<[T]> {
    pub const fn as_non_null_ptr(self) -> NonNull<T> {}
    pub const fn as_mut_ptr(self) -> *mut T {}
    pub unsafe fn get_unchecked_mut<I>(self, index: I) -> NonNull<I::Output> where I: SliceIndex<[T]>;
}

History / Steps

Initial PR: add (unchecked) indexing methods to raw (and NonNull) slices #73986
Add NonNull::as_mut_ptr: Add as_mut_ptr to NonNull<[T]> #75248
Final commenting period (FCP)
Stabilization PR

Open questions

Potential blockers: rustc performs auto-ref when a raw pointer would be enough #73987, Missing unsizing coercions for raw slice pointers #74679
Should this use arbitrary_self_types (Arbitrary self types v2 rfcs#3519)