drlvm/src/test/regression/H4751/Test.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.apache.harmony.drlvm.tests.regression.h4751;

import junit.framework.TestCase;

public class Test extends TestCase {
    
    public void test() {

        Test t1 = this;

        while (true) {
            if (t1 == null) {
                break;
            } else {
                Test t2 = t1;
                t1 = null;
                t2.foo();  // the bug caused NPE here
            }
        }
    }

    public void foo() {}

}