/*

 * Copyright (c) 2014, 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.

 *

 * 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.

 */

/*

 * @test

 * @bug 8011646

 * @summary SEGV in compiled code with loop predication

 * @run main/othervm  -XX:-TieredCompilation -XX:CompileOnly=TestHashCode.m1,Object.hashCode TestHashCode

 *

 */

public class TestHashCode {

    static class A {

        int i;

    }

    static class B extends A {

    }

    static boolean crash = false;

    static A m2() {

        if (crash) {

            return null;

        }

        return new A();

    }

    static int m1(A aa) {

        int res = 0;

        for (int i = 0; i < 10; i++) {

            A a = m2();

            int j = a.i;

            if (aa instanceof B) {

            }

            res += a.hashCode();

        }

        return res;

    }

    public static void main(String[] args) {

        A a = new A();

        for (int i = 0; i < 20000; i++) {

            m1(a);

        }

        crash = true;

        try {

          m1(a);

        } catch (NullPointerException e) {

            System.out.println("Test passed");

        }

    }

}