Initial load
diff --git a/test/java/lang/ref/EnqueueNullRef.java b/test/java/lang/ref/EnqueueNullRef.java
new file mode 100644
index 0000000..e510a27
--- /dev/null
+++ b/test/java/lang/ref/EnqueueNullRef.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2003 Sun Microsystems, Inc. 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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+ * @bug 4247236
+ * @summary Ensure that reference objects with null referents can be enqueued
+ */
+
+import java.lang.ref.*;
+
+
+public class EnqueueNullRef {
+
+ static void test(ReferenceQueue q, Reference r) {
+ if (!r.enqueue())
+ throw new RuntimeException("Enqueue operation failed");
+ }
+
+ public static void main(String[] args) {
+ ReferenceQueue q = new ReferenceQueue();
+ test(q, new WeakReference(null, q));
+ test(q, new SoftReference(null, q));
+ test(q, new PhantomReference(null, q));
+ }
+
+}