Move public ThreadAbortException back to CoreLib (dotnet/coreclr#10801)

Signed-off-by: dotnet-bot <dotnet-bot@microsoft.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/System.Private.CoreLib/shared/System/Threading/ThreadAbortException.cs b/src/System.Private.CoreLib/shared/System/Threading/ThreadAbortException.cs
new file mode 100644
index 000000000..e693e7192
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Threading/ThreadAbortException.cs
@@ -0,0 +1,36 @@
+// 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: An exception class which is thrown into a thread to cause it to
+**          abort. This is a special non-catchable exception and results in
+**            the thread's death.  This is thrown by the VM only and can NOT be
+**          thrown by any user thread, and subclassing this is useless.
+**
+**
+=============================================================================*/
+
+using System.Runtime.Serialization;
+
+namespace System.Threading
+{
+    [Serializable]
+    public sealed class ThreadAbortException : SystemException
+    {
+        private ThreadAbortException()
+        {
+            HResult = __HResults.COR_E_THREADABORTED;
+        }
+
+        internal ThreadAbortException(SerializationInfo info, StreamingContext context)
+            : base(info, context)
+        {
+        }
+
+        public object ExceptionState => null;
+    }
+}