From 57ff226a7b46296f1d7019f2dc06f82249e33db9 Mon Sep 17 00:00:00 2001
From: Andrew Hoefling <andrew@hoeflingsoftware.com>
Date: Wed, 6 Mar 2019 12:47:03 -0500
Subject: [PATCH] Removed (Int64) cast statements from RemoveItemsRange when
 checking for overflow errors

Commit migrated from https://github.com/dotnet/coreclr/commit/39be7e55798e4f81c531661b0df798e91c7d5936
---
 .../src/System/Collections/ObjectModel/Collection.cs                    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libraries/System.Private.CoreLib/src/System/Collections/ObjectModel/Collection.cs b/src/libraries/System.Private.CoreLib/src/System/Collections/ObjectModel/Collection.cs
index 16939e4..8aa387b 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Collections/ObjectModel/Collection.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Collections/ObjectModel/Collection.cs
@@ -217,7 +217,7 @@ namespace System.Collections.ObjectModel
                 ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument.count, ExceptionResource.ArgumentOutOfRange_NeedNonNegNum);
             }
 
-            if ((Int64)index + (Int64)count > items.Count)
+            if (index > items.Count - count)
             {
                 ThrowHelper.ThrowArgumentException(ExceptionResource.Argument_InvalidOffLen);
             }
-- 
2.7.4