From 5c7ca77b173e170f7440ba2cb5898cfc33874681 Mon Sep 17 00:00:00 2001
From: Simon Sapin <simon.sapin@exyr.org>
Date: Wed, 6 Jun 2018 13:46:51 +0200
Subject: [PATCH] Make the size of Option<NonZero*> a documented guarantee.

Closes #49137, the tracking issue for `NonZero*`,
as this was the last remaining open question.

Note that `ptr::NonNull<T>` already documents a similar guarantee.
---
 src/libcore/num/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index 26dd08b10b9b8..c2da9006a8a92 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -39,10 +39,10 @@ macro_rules! nonzero_integers {
         $(
             /// An integer that is known not to equal zero.
             ///
-            /// This may enable some memory layout optimization such as:
+            /// This enables some memory layout optimization.
+            /// For example, `Option<NonZeroU32>` is the same size as `u32`:
             ///
             /// ```rust
-            /// # #![feature(nonzero)]
             /// use std::mem::size_of;
             /// assert_eq!(size_of::<Option<std::num::NonZeroU32>>(), size_of::<u32>());
             /// ```