From a5e2d0c4e5f4afe1bd52ed0ebe0be03890d3af62 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Sun, 24 Feb 2019 12:25:46 +0100
Subject: [PATCH] remark that the rules are unfinished

---
 src/libcore/mem.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libcore/mem.rs b/src/libcore/mem.rs
index 30fa904101d2..d4d51f8eeb76 100644
--- a/src/libcore/mem.rs
+++ b/src/libcore/mem.rs
@@ -1230,6 +1230,8 @@ impl<T> MaybeUninit<T> {
     /// let x_vec = unsafe { &*x.as_ptr() };
     /// // We have created a reference to an uninitialized vector! This is undefined behavior.
     /// ```
+    /// (Notice that the rules around referenced to uninitialized data are not finalized yet, but
+    /// until they are, it is advisable to avoid them.)
     #[unstable(feature = "maybe_uninit", issue = "53491")]
     #[inline(always)]
     pub fn as_ptr(&self) -> *const T {
@@ -1266,6 +1268,8 @@ impl<T> MaybeUninit<T> {
     /// let x_vec = unsafe { &mut *x.as_mut_ptr() };
     /// // We have created a reference to an uninitialized vector! This is undefined behavior.
     /// ```
+    /// (Notice that the rules around referenced to uninitialized data are not finalized yet, but
+    /// until they are, it is advisable to avoid them.)
     #[unstable(feature = "maybe_uninit", issue = "53491")]
     #[inline(always)]
     pub fn as_mut_ptr(&mut self) -> *mut T {