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comparison test/compiler/5091921/Test7005594.java @ 3345:bad7ecd0b6ed

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5091921: Sign flip issues in loop optimizer Summary: Fix integer overflow problem in the code generated by loop optimizer. Reviewed-by: never
author kvn
date Wed, 04 May 2011 13:12:42 -0700
parents
children 231c2b41ea4d
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3344:0139aac70fb5 3345:bad7ecd0b6ed
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 7005594
28 * @summary Array overflow not handled correctly with loop optimzations
29 *
30 * @run main/othervm -Xms2048m -Xcomp -XX:CompileOnly=Test7005594.test Test7005594
31 */
32
33 public class Test7005594 {
34
35 static int test(byte a[]){
36 int result=0;
37 for( int i=0; i<a.length; i+=((0x7fffffff>>1)+1) ){
38 result += a[i];
39 }
40 return result;
41 }
42
43 public static void main(String [] args){
44 byte a[]=new byte[(0x7fffffff>>1)+2];
45 int result = 0;
46 try {
47 result = test(a);
48 } catch (ArrayIndexOutOfBoundsException e) {
49 e.printStackTrace(System.out);
50 System.out.println("Passed");
51 System.exit(95);
52 }
53 System.out.println(result);
54 System.out.println("FAILED");
55 System.exit(97);
56 }
57
58 }
59