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comparison test/compiler/6778657/Test.java @ 508:6d8fc951eb25

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6778657: Casts in SharedRuntime::f2i, f2l, d2i and d2l rely on undefined C++ behaviour Summary: Replaces SharedRuntime::f2i et al with versions that should work Reviewed-by: never Contributed-by: gbenson@redhat.com
author kvn
date Mon, 22 Dec 2008 15:43:02 -0800
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children 0fbdb4381b99
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500:ca7d48236048 508:6d8fc951eb25
1 /*
2 * Copyright 2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 /*
26 * @test
27 * @bug 6778657
28 * @summary Casts in SharedRuntime::f2i, f2l, d2i and d2l rely on undefined C++ behaviour
29 */
30
31 public class Test {
32 public static void check_f2i(int expect) {
33 float check = expect;
34 check *= 2;
35 int actual = (int) check;
36 if (actual != expect)
37 throw new RuntimeException("expecting " + expect + ", got " + actual);
38 }
39
40 public static void check_f2l(long expect) {
41 float check = expect;
42 check *= 2;
43 long actual = (long) check;
44 if (actual != expect)
45 throw new RuntimeException("expecting " + expect + ", got " + actual);
46 }
47
48 public static void check_d2i(int expect) {
49 double check = expect;
50 check *= 2;
51 int actual = (int) check;
52 if (actual != expect)
53 throw new RuntimeException("expecting " + expect + ", got " + actual);
54 }
55
56 public static void check_d2l(long expect) {
57 double check = expect;
58 check *= 2;
59 long actual = (long) check;
60 if (actual != expect)
61 throw new RuntimeException("expecting " + expect + ", got " + actual);
62 }
63
64 public static void main(String[] args) {
65 check_f2i(Integer.MAX_VALUE);
66 check_f2i(Integer.MIN_VALUE);
67 check_f2l(Long.MAX_VALUE);
68 check_f2l(Long.MIN_VALUE);
69 check_d2i(Integer.MAX_VALUE);
70 check_d2i(Integer.MIN_VALUE);
71 check_d2l(Long.MAX_VALUE);
72 check_d2l(Long.MIN_VALUE);
73 }
74 }
75