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diff --git a/src/Java/sun/repackage/UnsafeStaticFieldAccessorImpl.java b/src/Java/sun/repackage/UnsafeStaticFieldAccessorImpl.java
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+++ b/src/Java/sun/repackage/UnsafeStaticFieldAccessorImpl.java
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+/*
+ * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.repackage;
+
+import java.lang.reflect.Field;
+
+/** Base class for sun.misc.Unsafe-based FieldAccessors for static
+    fields. The observation is that there are only nine types of
+    fields from the standpoint of reflection code: the eight primitive
+    types and Object. Using class Unsafe instead of generated
+    bytecodes saves memory and loading time for the
+    dynamically-generated FieldAccessors. */
+
+abstract class UnsafeStaticFieldAccessorImpl extends UnsafeFieldAccessorImpl {
+    static {
+        Reflection.registerFieldsToFilter(UnsafeStaticFieldAccessorImpl.class,
+                                          new String[] { "base" });
+    }
+
+    protected final Object base; // base
+
+    UnsafeStaticFieldAccessorImpl(Field field) {
+        super(field);
+        base = unsafe.staticFieldBase(field);
+    }
+}