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comparison test/compiler/codegen/C1NullCheckOfNullStore.java @ 18058:54bc75c144b0

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Merge
author asaha
date Thu, 29 May 2014 13:14:25 -0700
parents 876390ee9b6f
children
comparison
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18055:1fa005fb28f5 18058:54bc75c144b0
1 /*
2 * Copyright (c) 2014, 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 * @test
26 * @bug 8039043
27 * @summary Null check is placed in a wrong place when storing a null to an object field on x64 with compressed oops off
28 * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:CompileCommand=compileonly,C1NullCheckOfNullStore::test -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:-UseCompressedOops C1NullCheckOfNullStore
29 *
30 */
31
32 public class C1NullCheckOfNullStore {
33 private static class Foo {
34 Object bar;
35 }
36 static private void test(Foo x) {
37 x.bar = null;
38 }
39 static public void main(String args[]) {
40 Foo x = new Foo();
41 for (int i = 0; i < 10000; i++) {
42 test(x);
43 }
44 boolean gotNPE = false;
45 try {
46 for (int i = 0; i < 10000; i++) {
47 test(null);
48 }
49 }
50 catch(NullPointerException e) {
51 gotNPE = true;
52 }
53 if (!gotNPE) {
54 throw new Error("Expecting a NullPointerException");
55 }
56 }
57 }