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 6931567
  28  * @summary JIT Error (on class file compiled with eclipse) on JVM x64 (but not on x32!).
  29  *
  30  * @run shell Test6931567.sh
  31  */
  32 
  33 // Should be compiled with javac from JDK1.3 to get bytecode which shows the problem.
  34 // The Test6931567.class is present in directory and will be used for testing.
  35 public class Test6931567 {
  36 
  37     public static void main(final String[] args) {
  38         booleanInvert(Integer.MAX_VALUE);
  39         booleanInvert(Integer.MAX_VALUE - 1);
  40     }
  41 
  42     private static void booleanInvert(final int max) {
  43         boolean test1 = false;
  44         boolean test2 = false;
  45 
  46         for (int i = 0; i < max; i++) {
  47             test1 = !test1;
  48         }
  49 
  50         for (int i = 0; i < max; i++) {
  51             test2 ^= true;
  52         }
  53 
  54         if (test1 != test2) {
  55             System.out.println("ERROR: Boolean invert\n\ttest1=" + test1
  56                     + "\n\ttest2=" + test2);
  57             System.exit(97);
  58         } else {
  59             System.out.println("Passed!");
  60         }
  61     }
  62 }
  63