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comparison test/compiler/8007722/Test8007722.java @ 8117:706c919d3b56

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8007722: C2: "assert(tp->base() != Type::AnyPtr) failed: not a bare pointer" at machnode.cpp:376 Summary: GetAndSetP's MachNode should capture bottom type. Reviewed-by: kvn
author roland
date Tue, 26 Feb 2013 12:18:30 +0100
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8116:6931f425c517 8117:706c919d3b56
1 /*
2 * Copyright (c) 2013, 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 8007722
27 * @summary GetAndSetP's MachNode should capture bottom type
28 * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8007722
29 *
30 */
31
32 import java.util.concurrent.atomic.*;
33
34 public class Test8007722 {
35
36 int i;
37 static AtomicReference<Test8007722> ref;
38
39 static int test(Test8007722 new_obj) {
40 Test8007722 o = ref.getAndSet(new_obj);
41 int ret = o.i;
42 o.i = 5;
43 return ret;
44 }
45
46 static public void main(String[] args) {
47 Test8007722 obj = new Test8007722();
48 ref = new AtomicReference<Test8007722>(obj);
49
50 for (int i = 0; i < 20000; i++) {
51 test(obj);
52 }
53
54 System.out.println("PASSED");
55 }
56 }