From 16c057256f68b39df70737838f367cf645d6e0c7 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Thu, 19 Jul 2018 09:11:56 +0200
Subject: [PATCH] fix safety-related comment in slice::rotate

---
 src/libcore/slice/rotate.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libcore/slice/rotate.rs b/src/libcore/slice/rotate.rs
index e4a4e33c1729e..28ef53ccb5cb6 100644
--- a/src/libcore/slice/rotate.rs
+++ b/src/libcore/slice/rotate.rs
@@ -48,7 +48,6 @@ impl<T> RawArray<T> {
 /// # Safety
 ///
 /// The specified range must be valid for reading and writing.
-/// The type `T` must have non-zero size.
 ///
 /// # Algorithm
 ///
@@ -73,6 +72,7 @@ pub unsafe fn ptr_rotate<T>(mut left: usize, mid: *mut T, mut right: usize) {
     loop {
         let delta = cmp::min(left, right);
         if delta <= RawArray::<T>::cap() {
+            // We will always hit this immediately for ZST.
             break;
         }