1 files changed, 25 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Threading/ThreadStart.cs b/src/mscorlib/src/System/Threading/ThreadStart.cs
new file mode 100644
index 0000000000..b968117195
--- /dev/null
+++ b/src/mscorlib/src/System/Threading/ThreadStart.cs
@@ -0,0 +1,25 @@
+// 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: This class is a Delegate which defines the start method
+**  for starting a thread.  That method must match this delegate.
+**
+**
+=============================================================================*/
+
+namespace System.Threading {
+    using System.Security.Permissions;
+    using System.Threading;
+
+    // Define the delegate
+    // NOTE: If you change the signature here, there is code in COMSynchronization
+    //  that invokes this delegate in native.
+[System.Runtime.InteropServices.ComVisible(true)]
+    public delegate void ThreadStart();
+}