1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8134468
  27  * @summary test that checks whether an array load falls into the range of an arraycopy is incorrect on 32bits
  28  * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestArrayCopyOverflowInBoundChecks
  29  *
  30  */
  31 public class TestArrayCopyOverflowInBoundChecks {
  32 
  33     static byte[] src_array = { 'a', 'b', 'c', 'd', 'e' };
  34 
  35     static byte test(int copy_len) {
  36         byte[] dst_array = new byte[10];
  37         System.arraycopy(src_array, 0, dst_array, 1, copy_len);
  38         return dst_array[1];
  39     }
  40 
  41     static public void main(String[] args) {
  42         for (int i = 0; i < 20000; i++) {
  43             if (test(src_array.length - 1) != src_array[0]) {
  44                 throw new RuntimeException("Test failed");
  45             }
  46         }
  47     }
  48 }