From: Dan Moseley <danmose@microsoft.com>
Date: Thu, 3 May 2018 00:20:50 +0000 (-0700)
Subject: Clarifying comment on overflow (#17865)
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9aea5b643d9f928244ddd50feaa6bc41fad28450;p=platform%2Fupstream%2Fcoreclr.git

Clarifying comment on overflow (#17865)

* Clarifying comment on overflow

* Nits
---

diff --git a/src/mscorlib/shared/System/Buffers/Utilities.cs b/src/mscorlib/shared/System/Buffers/Utilities.cs
index 9e8a888bee..b675100b03 100644
--- a/src/mscorlib/shared/System/Buffers/Utilities.cs
+++ b/src/mscorlib/shared/System/Buffers/Utilities.cs
@@ -14,6 +14,9 @@ namespace System.Buffers
         {
             Debug.Assert(bufferSize >= 0);
 
+            // bufferSize of 0 will underflow here, causing a huge
+            // index which the caller will discard because it is not
+            // within the bounds of the bucket array.
             uint bitsRemaining = ((uint)bufferSize - 1) >> 4;
 
             int poolIndex = 0;