TestArrayCopyOverflowInBoundChecks.java revision 11707:ad7af1afda7a 
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 *
29 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
30 *                    compiler.arraycopy.TestArrayCopyOverflowInBoundChecks
31 */
32
33package compiler.arraycopy;
34
35public class TestArrayCopyOverflowInBoundChecks {
36
37    static byte[] src_array = { 'a', 'b', 'c', 'd', 'e' };
38
39    static byte test(int copy_len) {
40        byte[] dst_array = new byte[10];
41        System.arraycopy(src_array, 0, dst_array, 1, copy_len);
42        return dst_array[1];
43    }
44
45    static public void main(String[] args) {
46        for (int i = 0; i < 20000; i++) {
47            if (test(src_array.length - 1) != src_array[0]) {
48                throw new RuntimeException("Test failed");
49            }
50        }
51    }
52}
53