0N/A/*
2362N/A * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/A/* @test
0N/A * @bug 4247236
0N/A * @summary Ensure that reference objects with null referents can be enqueued
0N/A */
0N/A
0N/Aimport java.lang.ref.*;
0N/A
0N/A
0N/Apublic class EnqueueNullRef {
0N/A
0N/A static void test(ReferenceQueue q, Reference r) {
0N/A if (!r.enqueue())
0N/A throw new RuntimeException("Enqueue operation failed");
0N/A }
0N/A
0N/A public static void main(String[] args) {
0N/A ReferenceQueue q = new ReferenceQueue();
0N/A test(q, new WeakReference(null, q));
0N/A test(q, new SoftReference(null, q));
0N/A test(q, new PhantomReference(null, q));
0N/A }
0N/A
0N/A}