| /* |
| * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| /** |
| * @test |
| * @bug 6956668 |
| * @summary misbehavior of XOR operator (^) with int |
| * |
| * @run main/othervm -Xbatch Test6956668 |
| */ |
| |
| |
| public class Test6956668 { |
| |
| public static int bitTest() { |
| int result = 0; |
| |
| int testValue = 73; |
| int bitCount = Integer.bitCount(testValue); |
| |
| if (testValue != 0) { |
| int gap = Long.numberOfTrailingZeros(testValue); |
| testValue >>>= gap; |
| |
| while (testValue != 0) { |
| result++; |
| |
| if ((testValue ^= 0x1) != 0) { |
| gap = Long.numberOfTrailingZeros(testValue); |
| testValue >>>= gap; |
| } |
| } |
| } |
| |
| if (bitCount != result) { |
| System.out.println("ERROR: " + bitCount + " != " + result); |
| System.exit(97); |
| } |
| |
| return (result); |
| } |
| |
| public static void main(String[] args) { |
| for (int i = 0; i < 100000; i++) { |
| int ct = bitTest(); |
| } |
| } |
| } |