Add reference to tracking issue rust-lang#86302 for const_ptr_write

Author: usbalbin

library/core/src/ptr/mod.rs

@@ -871,7 +871,7 @@ pub const unsafe fn read_unaligned<T>(src: *const T) -> T {
 /// ```
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature = "const_ptr_write", issue = "none")]
+#[rustc_const_unstable(feature = "const_ptr_write", issue = "86302")]
 pub const unsafe fn write<T>(dst: *mut T, src: T) {
     // We are calling the intrinsics directly to avoid function calls in the generated code
     // as `intrinsics::copy_nonoverlapping` is a wrapper function.
@@ -968,7 +968,7 @@ pub const unsafe fn write<T>(dst: *mut T, src: T) {
 /// ```
 #[inline]
 #[stable(feature = "ptr_unaligned", since = "1.17.0")]
-#[rustc_const_unstable(feature = "const_ptr_write", issue = "none")]
+#[rustc_const_unstable(feature = "const_ptr_write", issue = "86302")]
 pub const unsafe fn write_unaligned<T>(dst: *mut T, src: T) {
     // SAFETY: the caller must guarantee that `dst` is valid for writes.
     // `dst` cannot overlap `src` because the caller has mutable access

library/core/src/ptr/mut_ptr.rs

@@ -1002,7 +1002,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// [`ptr::write`]: crate::ptr::write()
     #[stable(feature = "pointer_methods", since = "1.26.0")]
-    #[rustc_const_unstable(feature = "const_ptr_write", issue = "none")]
+    #[rustc_const_unstable(feature = "const_ptr_write", issue = "86302")]
     #[inline(always)]
     pub const unsafe fn write(self, val: T)
     where
@@ -1057,7 +1057,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// [`ptr::write_unaligned`]: crate::ptr::write_unaligned()
     #[stable(feature = "pointer_methods", since = "1.26.0")]
-    #[rustc_const_unstable(feature = "const_ptr_write", issue = "none")]
+    #[rustc_const_unstable(feature = "const_ptr_write", issue = "86302")]
     #[inline(always)]
     pub const unsafe fn write_unaligned(self, val: T)
     where