view test/compiler/5091921/Test6186134.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 bad7ecd0b6ed
children
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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 6186134
 * @summary Server virtual machine produces/exeutes incorrect code.
 *
 * @run main Test6186134 100000
 */
import java.util.ArrayList;

public class Test6186134 {

  int num = 0;

  public Test6186134(int n) {
    num = n;
  }

  public boolean more() {
    return num-- > 0;
  }

  public ArrayList test1() {
    ArrayList res = new ArrayList();
    int maxResults = Integer.MAX_VALUE;
    int n = 0;
    boolean more = more();
    while ((n++ < maxResults) && more) {
      res.add(new Object());
      more = more();
    }
    return res;
  }

  public static void main(String[] pars) {
    int n = Integer.parseInt(pars[0]);
    for (int i=0; i<n; i++) {
      Test6186134 t = new Test6186134(10);
      int size = t.test1().size();
      if (size != 10) {
        System.out.println("wrong size: " + size +", should be 10");
        System.exit(97);
      }
    }
    System.out.println("Passed");
  }
}