1 files changed, 31 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/Runtime/CompilerServices/RuntimeCompatibilityAttribute.cs b/src/mscorlib/shared/System/Runtime/CompilerServices/RuntimeCompatibilityAttribute.cs
new file mode 100644
index 0000000000..55dba0d113
--- /dev/null
+++ b/src/mscorlib/shared/System/Runtime/CompilerServices/RuntimeCompatibilityAttribute.cs
@@ -0,0 +1,31 @@
+// 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.
+
+/*=============================================================================
+**
+**
+**
+** Purpose: Mark up the program to indicate various legacy or new opt-in behaviors.
+**
+**
+=============================================================================*/
+
+namespace System.Runtime.CompilerServices
+{
+    [Serializable]
+    [AttributeUsage(AttributeTargets.Assembly, Inherited = false, AllowMultiple = false)]
+    public sealed class RuntimeCompatibilityAttribute : Attribute
+    {
+        public RuntimeCompatibilityAttribute()
+        {
+            // legacy behavior is the default, and WrapNonExceptionThrows is implicitly
+            // false thanks to the CLR's guarantee of zeroed memory.
+        }
+
+        // If a non-CLSCompliant exception (i.e. one that doesn't derive from System.Exception) is
+        // thrown, should it be wrapped up in a System.Runtime.CompilerServices.RuntimeWrappedException
+        // instance when presented to catch handlers?
+        public bool WrapNonExceptionThrows { get; set; }
+    }
+}