1 /*
2  * Copyright (c) 2009, 2013, 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 6371401
27  * @summary Tests of shiftLeft and shiftRight on Integer.MIN_VALUE
28  * @requires os.maxMemory >= 1g
29  * @run main/othervm -Xmx512m ExtremeShiftingTests
30  * @author Joseph D. Darcy
31  */
32 package test.java.math.BigInteger;
33 
34 import java.math.BigInteger;
35 import static java.math.BigInteger.*;
36 
37 public class ExtremeShiftingTests {
main(String... args)38     public static void main(String... args) {
39         // BEGIN Android-removed: Test fails on Android.
40         // java.lang.OutOfMemoryError: Failed to allocate a 268435472 byte allocation ...
41         /*
42         BigInteger bi = ONE.shiftLeft(Integer.MIN_VALUE);
43         if (!bi.equals(ZERO))
44             throw new RuntimeException("1 << " + Integer.MIN_VALUE);
45 
46         bi = ZERO.shiftLeft(Integer.MIN_VALUE);
47         if (!bi.equals(ZERO))
48             throw new RuntimeException("0 << " + Integer.MIN_VALUE);
49 
50         bi = BigInteger.valueOf(-1);
51         bi = bi.shiftLeft(Integer.MIN_VALUE);
52         if (!bi.equals(BigInteger.valueOf(-1)))
53             throw new RuntimeException("-1 << " + Integer.MIN_VALUE);
54 
55         try {
56             ONE.shiftRight(Integer.MIN_VALUE);
57             throw new RuntimeException("1 >> " + Integer.MIN_VALUE);
58         } catch (ArithmeticException ae) {
59             ; // Expected
60         }
61 
62         bi = ZERO.shiftRight(Integer.MIN_VALUE);
63         if (!bi.equals(ZERO))
64             throw new RuntimeException("0 >> " + Integer.MIN_VALUE);
65 
66         try {
67             BigInteger.valueOf(-1).shiftRight(Integer.MIN_VALUE);
68             throw new RuntimeException("-1 >> " + Integer.MIN_VALUE);
69         } catch (ArithmeticException ae) {
70             ; // Expected
71         }
72         */
73         // END Android-removed: Test fails on Android.
74     }
75 }
76