1/*
2 * Copyright (c) 2011, 2013, 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 6992759
27 * @summary Bad code generated for integer <= comparison, fails for Integer.MAX_VALUE
28 *
29 * @run main/timeout=240 compiler.c2.Test6992759
30 */
31
32package compiler.c2;
33
34public class Test6992759 {
35
36    static final int N_TESTS = 1000000000;
37
38    public static void main(String[] args) throws Exception {
39
40        /*
41         * If MAX_VALUE is changed to MAX_VALUE - 1 below, the test passes
42         * because (apparently) bad code is only generated when comparing
43         * <= MAX_VALUE in the doTest method.
44         */
45        Test6992759 test = new Test6992759();
46        for (int i = 0; i < N_TESTS; i += 1) {
47            test.doTest(10, Integer.MAX_VALUE, i);
48            //test.doTest(10, Integer.MAX_VALUE - 1, i);
49        }
50        System.out.println("No failure");
51    }
52
53    void doTest(int expected, int max, int i) {
54        int counted;
55        for (counted = 0;
56             (counted <= max) && (counted < expected);
57             counted += 1) {
58        }
59        if (counted != expected) {
60            throw new RuntimeException("Failed test iteration=" + i +
61                                       " max=" + max +
62                                       " counted=" + counted +
63                                       " expected=" + expected);
64        }
65    }
66}
67
68