Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: test/compiler/7179138/Test7179138_1.java
test/compiler/7179138/Test7179138_1.java
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| 1 /* | |
| 2 * Copyright 2012 Skip Balk. All Rights Reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 | |
| 24 /* | |
| 25 * @test | |
| 26 * @bug 7179138 | |
| 27 * @summary Incorrect result with String concatenation optimization | |
| 28 * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation Test7179138_1 | |
| 29 * | |
| 30 * @author Skip Balk | |
| 31 */ | |
| 32 | |
| 33 public class Test7179138_1 { | |
| 34 public static void main(String[] args) throws Exception { | |
| 35 System.out.println("Java Version: " + System.getProperty("java.vm.version")); | |
| 36 long[] durations = new long[60]; | |
| 37 for (int i = 0; i < 100000; i++) { | |
| 38 // this empty for-loop is required to reproduce this bug | |
| 39 for (long duration : durations) { | |
| 40 // do nothing | |
| 41 } | |
| 42 { | |
| 43 String s = "test"; | |
| 44 int len = s.length(); | |
| 45 | |
| 46 s = new StringBuilder(String.valueOf(s)).append(s).toString(); | |
| 47 len = len + len; | |
| 48 | |
| 49 s = new StringBuilder(String.valueOf(s)).append(s).toString(); | |
| 50 len = len + len; | |
| 51 | |
| 52 s = new StringBuilder(String.valueOf(s)).append(s).toString(); | |
| 53 len = len + len; | |
| 54 | |
| 55 if (s.length() != len) { | |
| 56 System.out.println("Failed at iteration: " + i); | |
| 57 System.out.println("Length mismatch: " + s.length() + " <> " + len); | |
| 58 System.out.println("Expected: \"" + "test" + "test" + "test" + "test" + "test" + "test" + "test" + "test" + "\""); | |
| 59 System.out.println("Actual: \"" + s + "\""); | |
| 60 System.exit(97); | |
| 61 } | |
| 62 } | |
| 63 } | |
| 64 } | |
| 65 } | |
| 66 |
