1 files changed, 14 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/Runtime/ConstrainedExecution/Cer.cs b/src/mscorlib/shared/System/Runtime/ConstrainedExecution/Cer.cs
new file mode 100644
index 0000000000..c142ec9ecc
--- /dev/null
+++ b/src/mscorlib/shared/System/Runtime/ConstrainedExecution/Cer.cs
@@ -0,0 +1,14 @@
+// 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.ConstrainedExecution
+{
+    [Serializable]
+    public enum Cer : int
+    {
+        None = 0,
+        MayFail = 1,  // Might fail, but the method will say it failed
+        Success = 2,
+    }
+}