| /* |
| * Copyright 2012 Skip Balk. 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 7179138 |
| * @summary Incorrect result with String concatenation optimization |
| * |
| * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation |
| * compiler.c2.Test7179138_1 |
| * |
| * @author Skip Balk |
| */ |
| |
| package compiler.c2; |
| |
| public class Test7179138_1 { |
| public static void main(String[] args) throws Exception { |
| System.out.println("Java Version: " + System.getProperty("java.vm.version")); |
| long[] durations = new long[60]; |
| for (int i = 0; i < 100000; i++) { |
| // this empty for-loop is required to reproduce this bug |
| for (long duration : durations) { |
| // do nothing |
| } |
| { |
| String s = "test"; |
| int len = s.length(); |
| |
| s = new StringBuilder(String.valueOf(s)).append(s).toString(); |
| len = len + len; |
| |
| s = new StringBuilder(String.valueOf(s)).append(s).toString(); |
| len = len + len; |
| |
| s = new StringBuilder(String.valueOf(s)).append(s).toString(); |
| len = len + len; |
| |
| if (s.length() != len) { |
| System.out.println("Failed at iteration: " + i); |
| System.out.println("Length mismatch: " + s.length() + " <> " + len); |
| System.out.println("Expected: \"" + "test" + "test" + "test" + "test" + "test" + "test" + "test" + "test" + "\""); |
| System.out.println("Actual: \"" + s + "\""); |
| System.exit(97); |
| } |
| } |
| } |
| } |
| } |
| |