1 files changed, 13 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/Runtime/CompilerServices/DiscardableAttribute.cs b/src/mscorlib/shared/System/Runtime/CompilerServices/DiscardableAttribute.cs
new file mode 100644
index 0000000000..c88b3a7599
--- /dev/null
+++ b/src/mscorlib/shared/System/Runtime/CompilerServices/DiscardableAttribute.cs
@@ -0,0 +1,13 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.CompilerServices
+{
+    // Custom attribute to indicating a TypeDef is a discardable attribute.
+    
+    public class DiscardableAttribute : Attribute
+    {
+        public DiscardableAttribute() { }
+    }
+}