view test/compiler/7052494/Test7052494.java @ 12986:1b422ef5288a

8025728: Missing volatile specifier for field G1AllocRegion::_alloc_region Summary: The field G1AllocRegion::_alloc_region needs to be declared volatile as it is used with that intention. Otherwise the compiler may generate the code that reloads the value which might have changed in the meantime, leading to spurious crashes. Reviewed-by: iveresov, simonis, tschatzl Contributed-by: Axel Siebenborn <axel.siebenborn@sap.com>
author tschatzl
date Wed, 23 Oct 2013 10:23:06 +0200
parents 3fbb609d9e96
children
line wrap: on
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/*
 * 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 7052494
 * @summary Eclipse test fails on JDK 7 b142
 *
 * @run main/othervm -Xbatch Test7052494
 */


public class Test7052494 {

  static int test1(int i, int limit) {
    int result = 0;
    while (i++ != 0) {
      if (result >= limit)
        break;
      result = i*2;
    }
    return result;
  }

  static int test2(int i, int limit) {
    int result = 0;
    while (i-- != 0) {
      if (result <= limit)
        break;
      result = i*2;
    }
    return result;
  }

  static void test3(int i, int limit, int arr[]) {
    while (i++ != 0) {
      if (arr[i-1] >= limit)
        break;
      arr[i] = i*2;
    }
  }

  static void test4(int i, int limit, int arr[]) {
    while (i-- != 0) {
      if (arr[arr.length + i + 1] <= limit)
        break;
      arr[arr.length + i] = i*2;
    }
  }

  // Empty loop rolls through MAXINT if i > 0

  static final int limit5 = Integer.MIN_VALUE + 10000;

  static int test5(int i) {
    int result = 0;
    while (i++ != limit5) {
      result = i*2;
    }
    return result;
  }

  // Empty loop rolls through MININT if i < 0

  static final int limit6 = Integer.MAX_VALUE - 10000;

  static int test6(int i) {
    int result = 0;
    while (i-- != limit6) {
      result = i*2;
    }
    return result;
  }

  public static void main(String [] args) {
    boolean failed = false;
    int[] arr = new int[8];
    int[] ar3 = { 0, 0, 4, 6, 8, 10, 0, 0 };
    int[] ar4 = { 0, 0, 0, -10, -8, -6, -4, 0 };
    System.out.println("test1");
    for (int i = 0; i < 11000; i++) {
      int k = test1(1, 10);
      if (k != 10) {
        System.out.println("FAILED: " + k + " != 10");
        failed = true;
        break;
      }
    }
    System.out.println("test2");
    for (int i = 0; i < 11000; i++) {
      int k = test2(-1, -10);
      if (k != -10) {
        System.out.println("FAILED: " + k + " != -10");
        failed = true;
        break;
      }
    }
    System.out.println("test3");
    for (int i = 0; i < 11000; i++) {
      java.util.Arrays.fill(arr, 0);
      test3(1, 10, arr);
      if (!java.util.Arrays.equals(arr,ar3)) {
        System.out.println("FAILED: arr = { " + arr[0] + ", "
                                              + arr[1] + ", "
                                              + arr[2] + ", "
                                              + arr[3] + ", "
                                              + arr[4] + ", "
                                              + arr[5] + ", "
                                              + arr[6] + ", "
                                              + arr[7] + " }");
        failed = true;
        break;
      }
    }
    System.out.println("test4");
    for (int i = 0; i < 11000; i++) {
      java.util.Arrays.fill(arr, 0);
      test4(-1, -10, arr);
      if (!java.util.Arrays.equals(arr,ar4)) {
        System.out.println("FAILED: arr = { " + arr[0] + ", "
                                              + arr[1] + ", "
                                              + arr[2] + ", "
                                              + arr[3] + ", "
                                              + arr[4] + ", "
                                              + arr[5] + ", "
                                              + arr[6] + ", "
                                              + arr[7] + " }");
        failed = true;
        break;
      }
    }
    System.out.println("test5");
    for (int i = 0; i < 11000; i++) {
      int k = test5(limit6);
      if (k != limit5*2) {
        System.out.println("FAILED: " + k + " != " + limit5*2);
        failed = true;
        break;
      }
    }
    System.out.println("test6");
    for (int i = 0; i < 11000; i++) {
      int k = test6(limit5);
      if (k != limit6*2) {
        System.out.println("FAILED: " + k + " != " + limit6*2);
        failed = true;
        break;
      }
    }
    System.out.println("finish");
    if (failed)
      System.exit(97);
  }
}