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 * Copyright (c) 2019, 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.

 *

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 */

/**

 * @test

 * @bug 8218227

 * @summary StringBuilder/StringBuffer constructor throws confusing

 *          NegativeArraySizeException

 * @requires os.maxMemory >= 6G

 * @run main/othervm -Xms5G -Xmx5G HugeCapacity

 * @ignore This test has huge memory requirements

 */

public class HugeCapacity {

    private static int failures = 0;

    public static void main(String[] args) {

        testHugeInitialString();

        testHugeInitialCharSequence();

        if (failures > 0) {

            throw new RuntimeException(failures + " tests failed");

        }

    }

    private static void testHugeInitialString() {

        try {

            String str = "Z".repeat(Integer.MAX_VALUE - 8);

            StringBuffer sb = new StringBuffer(str);

        } catch (OutOfMemoryError ignore) {

        } catch (Throwable unexpected) {

            unexpected.printStackTrace();

            failures++;

        }

    }

    private static void testHugeInitialCharSequence() {

        try {

            CharSequence seq = new MyHugeCharSeq();

            StringBuffer sb = new StringBuffer(seq);

        } catch (OutOfMemoryError ignore) {

        } catch (Throwable unexpected) {

            unexpected.printStackTrace();

            failures++;

        }

    }

    private static class MyHugeCharSeq implements CharSequence {

        public char charAt(int i) {

            throw new UnsupportedOperationException();

        }

        public int length() { return Integer.MAX_VALUE; }

        public CharSequence subSequence(int st, int e) {

            throw new UnsupportedOperationException();

        }

        public String toString() { return ""; }

    }

}