/*

 * 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 8043508

 * @summary Drawing a very long string crashes VM

 */

import java.awt.*;

import java.awt.image.*;

public class DrawStringCrash {

    public static void main(String[] args) {

        StringBuffer sb = new StringBuffer();

        String s = "abcdefghijklmnopqrstuzwxyz";

        for (int x = 0; x < 100000 ; x++) {

           sb.append(s);

        }

        // Now have a string which uses approx 5Mb memory

        // Loop again drawing doubling each time until

        // we reach 8 billion chars or get OOME which means we can't

        // go any further.

        // Often there is no crash because Java OOM happens

        // long before native heap runs out.

        long maxLen = 8L * 1024 * 1024 * 1024;

        int len = sb.length();

        BufferedImage bi =

            new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);

        Graphics2D g2d = bi.createGraphics();

        while (len < maxLen) {

            try {

                g2d.drawString(s, 20, 20);

            } catch (OutOfMemoryError e) {

                return;

            }

            sb.append(sb);

            len *= 2;

        }

        return;

    }

}