import java.io.InputStream;

/*
 * Copyright (c) 2013, 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 7103957
 * @summary Ensure that no NegativeArraySizeException is thrown.
 * @run main NegativeArraySizeTest
 */
public class NegativeArraySizeTest {

    public static void main(String[] args) throws Exception {
        // Derive the path to the java VM.
        String separator = System.getProperty("file.separator");
        String classpath = System.getProperty("java.class.path");
        String javapath = System.getProperty("java.home")
                + separator + "bin" + separator + "java";

        // Build the process to exec the SubVM class forcing the
        // Integer.IntegerCache.high setting.
        ProcessBuilder processBuilder =
                new ProcessBuilder(javapath,
                "-Djava.lang.Integer.IntegerCache.high=2147483519",
                "-classpath", classpath,
                SubVM.class.getName());

        // Force subprocess I/O to go over a pipe.
        processBuilder.redirectError(ProcessBuilder.Redirect.PIPE);
        processBuilder.redirectOutput(ProcessBuilder.Redirect.PIPE);

        // Spawn and wait for SubVM process.
        Process process = processBuilder.start();
        process.waitFor();

        // Need to check both error and output stream of SubVM Process
        // as the stream to which the exception string is written appears
        // to vary depending on which version of the VM is run.

        // Check subprocess error stream for NegativeArraySizeException.
        byte[] b = new byte[2048];
        InputStream errorStream = process.getErrorStream();
        int len;
        if ((len = errorStream.read(b, 0, b.length)) > 0) {
            String s = new String(b, 0, len);
            if (s.indexOf("NegativeArraySizeException") != -1) {
                throw new RuntimeException("NegativeArraySizeTest failed!");
            }
        }

        // Check subprocess output stream for NegativeArraySizeException.
        InputStream outputStream = process.getInputStream();
        if ((len = outputStream.read(b, 0, b.length)) > 0) {
            String s = new String(b, 0, len);
            if (s.indexOf("NegativeArraySizeException") != -1) {
                throw new RuntimeException("NegativeArraySizeTest failed!");
            }
        }
    }
}

class SubVM {
    public static void main(String[] args) {
        Integer i = 0;
    }
}