Mercurial > hg > graal-jvmci-8
comparison test/compiler/exceptions/SumTest.java @ 20702:b5eb829bbce1
8066900: Array Out Of Bounds Exception causes variable corruption
Summary: Fix FP registers save/restore during exception handling
Reviewed-by: kvn, vlivanov
author | iveresov |
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date | Tue, 09 Dec 2014 12:25:38 -0800 |
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20701:b6585ac86988 | 20702:b5eb829bbce1 |
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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 |