/*

 * Copyright (c) 2016, Red Hat, 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 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 8161147

 * @summary Safepoint on backedge breaks UseCountedLoopSafepoints

 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:+UseCountedLoopSafepoints TestCountedLoopSafepointBackedge

 *

 */

public class TestCountedLoopSafepointBackedge {

    static void test(int[] arr, int inc) {

        int i = 0;

        for (;;) {

            for (int j = 0; j < 10; j++);

            arr[i] = i;

            i++;

            if (i >= 100) {

                break;

            }

            for (int j = 0; j < 10; j++);

        }

    }

    static public void main(String[] args) {

        int[] arr = new int[100];

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

             test(arr, 1);

        }

    }

}