view test/compiler/5091921/Test6905845.java @ 9010:08a16c26907f

MX_TESTFILE environment variable can be used to specify (and preserve) the test list file used by 'mx unittest'. This is useful when wanting to run the command under gdb.
author Doug Simon <doug.simon@oracle.com>
date Thu, 11 Apr 2013 21:40:52 +0200
parents 514efad5e81a
children
line wrap: on
line source

/*
 * Copyright (c) 2011, 2013, 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 6905845
 * @summary Server VM improperly optimizing away loop.
 *
 * @run main/timeout=480 Test6905845
 */

public class Test6905845 {

   public static void main(String[] args){
      for (int asdf = 0; asdf < 5; asdf++){
         //test block
         {
            StringBuilder strBuf1 = new StringBuilder(65);
            long          start   = System.currentTimeMillis();
            int           count   = 0;

            for (int i = Integer.MIN_VALUE; i < (Integer.MAX_VALUE - 80); i += 79){
               strBuf1.append(i);
               count++;
               strBuf1.delete(0, 65);
            }

            System.out.println(count);
            if (count != 54366674) {
              System.out.println("wrong count: " + count +", should be 54366674");
              System.exit(97);
            }
         }
         //test block
         {
            StringBuilder strBuf1 = new StringBuilder(65);
            long          start   = System.currentTimeMillis();
            int           count   = 0;

            for (int i = Integer.MIN_VALUE; i < (Integer.MAX_VALUE - 80); i += 79){
               strBuf1.append(i);
               count++;
               strBuf1.delete(0, 65);
            }

            System.out.println(count);
            if (count != 54366674) {
              System.out.println("wrong count: " + count +", should be 54366674");
              System.exit(97);
            }
         }
      }
   }
}