Mercurial > hg > truffle

comparison test/compiler/exceptions/SumTest.java @ 20702:b5eb829bbce1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8066900: Array Out Of Bounds Exception causes variable corruption Summary: Fix FP registers save/restore during exception handling Reviewed-by: kvn, vlivanov
author iveresov
date Tue, 09 Dec 2014 12:25:38 -0800
parents
children
comparison
equal deleted inserted replaced
20701:b6585ac86988 20702:b5eb829bbce1
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 * @run main/othervm -Xbatch SumTest
29 *
30 */
31 public class SumTest {
32 private static class Sum {
33
34 double[] sums;
35
36 /**
37 * Construct empty Sum
38 */
39 public Sum() {
40 sums = new double[0];
41 }
42
43 /**
44 * Return the sum of all numbers added to this Sum
45 *
46 * @return the sum
47 */
48 final public double getSum() {
49 double sum = 0;
50 for (final double s : sums) {
51 sum += s;
52 }
53
54 return sum;
55 }
56
57 /**
58 * Add a new number to this Sum
59 *
60 * @param a number to be added.
61 */
62 final public void add(double a) {
63 try {
64 sums[sums.length] = -1; // Cause IndexOutOfBoundsException
65 } catch (final IndexOutOfBoundsException e) {
66 final double[] oldSums = sums;
67 sums = new double[oldSums.length + 1]; // Extend sums
68 System.arraycopy(oldSums, 0, sums, 0, oldSums.length);
69 sums[oldSums.length] = a; // Append a
70 }
71 }
72 }
73
74 public static void main(String[] args) throws Exception {
75 final Sum sum = new Sum();
76 for (int i = 1; i <= 10000; ++i) {
77 sum.add(1);
78 double ii = sum.getSum();
79 if (i != ii) {
80 throw new Exception("Failure: computed = " + ii + ", expected = " + i);
81 }
82 }
83 }
84
85 }
86