From 1f07aa582a41e6fc253139909d3bf9bfd04a9d6d Mon Sep 17 00:00:00 2001
From: Krishna Sai Veera Reddy <krishnasai.veerareddy@gm.com>
Date: Tue, 10 Dec 2019 14:30:06 -0700
Subject: [PATCH] Add better documentation for unsafe block

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

diff --git a/src/libcore/cmp.rs b/src/libcore/cmp.rs
index e16a428feb645..87a407c5e9f7b 100644
--- a/src/libcore/cmp.rs
+++ b/src/libcore/cmp.rs
@@ -1134,7 +1134,7 @@ mod impls {
                 -1 => Less,
                 0 => Equal,
                 1 => Greater,
-                // SAFETY: Unreachable code
+                // SAFETY: bool as i8 returns 0 or 1, so the difference can't be anything else
                 _ => unsafe { unreachable_unchecked() },
             }
         }