SumTest.java revision 11707:ad7af1afda7a 
1/*
2 * Copyright (c) 2014, 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 8066900
27 * @summary FP registers are not properly restored by C1 when handling exceptions
28 *
29 * @run main/othervm -Xbatch compiler.exceptions.SumTest
30 */
31
32package compiler.exceptions;
33
34public class SumTest {
35    private static class Sum {
36
37        double[] sums;
38
39        /**
40         * Construct empty Sum
41         */
42        public Sum() {
43            sums = new double[0];
44        }
45
46        /**
47         * Return the sum of all numbers added to this Sum
48         *
49         * @return the sum
50         */
51        final public double getSum() {
52            double sum = 0;
53            for (final double s : sums) {
54                sum += s;
55            }
56
57            return sum;
58        }
59
60        /**
61         * Add a new number to this Sum
62         *
63         * @param a number to be added.
64         */
65        final public void add(double a) {
66            try {
67                sums[sums.length] = -1; // Cause IndexOutOfBoundsException
68            } catch (final IndexOutOfBoundsException e) {
69                final double[] oldSums = sums;
70                sums = new double[oldSums.length + 1]; // Extend sums
71                System.arraycopy(oldSums, 0, sums, 0, oldSums.length);
72                sums[oldSums.length] = a; // Append a
73            }
74        }
75    }
76
77    public static void main(String[] args) throws Exception {
78        final Sum sum = new Sum();
79        for (int i = 1; i <= 10000; ++i) {
80            sum.add(1);
81            double ii = sum.getSum();
82            if (i != ii) {
83                throw new Exception("Failure: computed = " + ii + ", expected = " + i);
84            }
85        }
86    }
87
88}
89
90