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comparison test/compiler/7024475/Test7024475.java @ 2403:1927db75dd85

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7024475: loop doesn't terminate when compiled Reviewed-by: kvn
author never
date Sun, 27 Mar 2011 00:00:14 -0700
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2402:244bf8afbbd3 2403:1927db75dd85
1 /*
2 * Copyright (c) 2011, 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 /**
26 * @test
27 * @bug 7024475
28 * @summary loop doesn't terminate when compiled
29 *
30 * @run main Test7024475
31 */
32
33 public class Test7024475 {
34
35 static int i;
36 static int x1;
37 static int[] bucket_B;
38
39 static void test(Test7024475 test, int i, int c0, int j, int c1) {
40 for (;;) {
41 if (c1 > c0) {
42 if (c0 > 253) {
43 throw new InternalError("c0 = " + c0);
44 }
45 int index = c0 * 256 + c1;
46 if (index == -1) return;
47 i = bucket_B[index];
48 if (1 < j - i && test != null)
49 x1 = 0;
50 j = i;
51 c1--;
52 } else {
53 c0--;
54 if (j <= 0)
55 break;
56 c1 = 255;
57 }
58 }
59 }
60
61 public static void main(String args[]) {
62 Test7024475 t = new Test7024475();
63 bucket_B = new int[256*256];
64 for (int i = 1; i < 256*256; i++) {
65 bucket_B[i] = 1;
66 }
67 for (int n = 0; n < 100000; n++) {
68 test(t, 2, 85, 1, 134);
69 }
70 }
71 }