Workaround to remove unnecessary bounds checks when using {ReadOnly}Span.IsEmpty...

Commit migrated from https://github.com/dotnet/coreclr/commit/3ce59b1ab67fcf7c23c9fbc5da9b229f54568414

diff --git a/src/libraries/System.Private.CoreLib/src/System/ReadOnlySpan.cs b/src/libraries/System.Private.CoreLib/src/System/ReadOnlySpan.cs
index 61af717..17b7134 100644 (file)
--- a/src/libraries/System.Private.CoreLib/src/System/ReadOnlySpan.cs
+++ b/src/libraries/System.Private.CoreLib/src/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/libraries/System.Private.CoreLib/src/System/Span.cs b/src/libraries/System.Private.CoreLib/src/System/Span.cs
index ddbdba1..185042f 100644 (file)
--- a/src/libraries/System.Private.CoreLib/src/System/Span.cs
+++ b/src/libraries/System.Private.CoreLib/src/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;
             }
         }