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 *
29 * @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions
30 *    -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:-UseCompressedOops
31 *    -XX:CompileCommand=compileonly,compiler.codegen.C1NullCheckOfNullStore::test
32 *    compiler.codegen.C1NullCheckOfNullStore
33 */
34
35package compiler.codegen;
36
37public class C1NullCheckOfNullStore {
38    private static class Foo {
39        Object bar;
40    }
41
42    static private void test(Foo x) {
43        x.bar = null;
44    }
45
46    static public void main(String args[]) {
47        Foo x = new Foo();
48        for (int i = 0; i < 10000; i++) {
49            test(x);
50        }
51        boolean gotNPE = false;
52        try {
53            for (int i = 0; i < 10000; i++) {
54                test(null);
55            }
56        } catch (NullPointerException e) {
57            gotNPE = true;
58        }
59        if (!gotNPE) {
60            throw new Error("Expecting a NullPointerException");
61        }
62    }
63}
64