From a30ee8e7636d2cf26eba89a8402cdfefebf9845e Mon Sep 17 00:00:00 2001
From: Krishna Sai Veera Reddy <krishnasai.veerareddy@gm.com>
Date: Mon, 2 Dec 2019 08:45:35 -0700
Subject: [PATCH] Document usage of unsafe block

---
 src/libcore/cmp.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libcore/cmp.rs b/src/libcore/cmp.rs
index e72b6117ba86..e16a428feb64 100644
--- a/src/libcore/cmp.rs
+++ b/src/libcore/cmp.rs
@@ -1134,6 +1134,7 @@ mod impls {
                 -1 => Less,
                 0 => Equal,
                 1 => Greater,
+                // SAFETY: Unreachable code
                 _ => unsafe { unreachable_unchecked() },
             }
         }