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Java example source code file (Test6905845.java)
The Test6905845.java Java example source code/* * 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); } } } } } Other Java examples (source code examples)Here is a short list of links related to this Java Test6905845.java source code file: |
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