TestCCPAllocateArray.java

/*
 * Copyright (c) 2022, 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.
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/**
 * @test
 * @bug 8279062
 * @summary C2: assert(t->meet(t0) == t) failed: Not monotonic after JDK-8278413
 *
 * @run main/othervm -XX:-BackgroundCompilation TestCCPAllocateArray
 *
 */

public class TestCCPAllocateArray {
    public static void main(String[] args) {
        for (int i = 0; i < 20_000; i++) {
            try {
                test();
            } catch (OutOfMemoryError e) {
            }
            length(42);
        }
    }

    private static int[] test() {
        int i = 2;
        for (; i < 4; i *= 2);
        return new int[length(i)];
    }

    private static int length(int i) {
        return i == 4 ? Integer.MAX_VALUE : 0;
    }
}