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comparison test/compiler/7009359/Test7009359.java @ 2090:2ddb2fab82cb

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7009359: HS with -XX:+AggressiveOpts optimize new StringBuffer(null) so it does not throw NPE as expected Summary: Bailout StringConcat optimization if null is passed to StringBuffer constructor. Reviewed-by: iveresov
author kvn
date Tue, 28 Dec 2010 17:34:02 -0800
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children c703f9c4b025
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2089:037c727f35fb 2090:2ddb2fab82cb
1 /*
2 * Copyright (c) 2010, Oracle and/or its affiliates. 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 /**
26 * @test
27 * @bug 7009359
28 * @summary HS with -XX:+AggressiveOpts optimize new StringBuffer(null) so it does not throw NPE as expected
29 *
30 * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+OptimizeStringConcat -XX:CompileCommand=exclude,Test7009359,main Test7009359
31 *
32 */
33
34 public class Test7009359 {
35 public static void main (String[] args) {
36 for(int i = 0; i < 1000000; i++) {
37 if(!stringmakerBUG(null).equals("NPE")) {
38 System.out.println("StringBuffer(null) does not throw NPE");
39 System.exit(97);
40 }
41 }
42 }
43
44 public static String stringmakerBUG(String str) {
45 try {
46 return new StringBuffer(str).toString();
47 } catch (NullPointerException e) {
48 return "NPE";
49 }
50 }
51 }
52