From: Ahson Khan <ahkha@microsoft.com>
Date: Fri, 24 Aug 2018 02:11:48 +0000 (-0700)
Subject: Workaround to remove unnecessary bounds checks when using {ReadOnly}Span.IsEmpty... 
X-Git-Tag: accepted/tizen/unified/20190422.045933~1374
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3ce59b1ab67fcf7c23c9fbc5da9b229f54568414;p=platform%2Fupstream%2Fcoreclr.git

Workaround to remove unnecessary bounds checks when using {ReadOnly}Span.IsEmpty (#19640)
---

diff --git a/src/System.Private.CoreLib/shared/System/ReadOnlySpan.cs b/src/System.Private.CoreLib/shared/System/ReadOnlySpan.cs
index 61af717..17b7134 100644
--- a/src/System.Private.CoreLib/shared/System/ReadOnlySpan.cs
+++ b/src/System.Private.CoreLib/shared/System/ReadOnlySpan.cs
@@ -40,7 +40,8 @@ namespace System
             [NonVersionable]
             get
             {
-                return _length == 0;
+                // Workaround for https://github.com/dotnet/coreclr/issues/19620
+                return 0 >= (uint)_length;
             }
         }
         /// <summary>
diff --git a/src/System.Private.CoreLib/shared/System/Span.cs b/src/System.Private.CoreLib/shared/System/Span.cs
index ddbdba1..185042f 100644
--- a/src/System.Private.CoreLib/shared/System/Span.cs
+++ b/src/System.Private.CoreLib/shared/System/Span.cs
@@ -40,7 +40,8 @@ namespace System
             [NonVersionable]
             get
             {
-                return _length == 0;
+                // Workaround for https://github.com/dotnet/coreclr/issues/19620
+                return 0 >= (uint)_length;
             }
         }