1 /*
 2  * Copyright (c) 2019, 2020, 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 8218201
27  * @summary BCEscapeAnalyzer assigns wrong escape state to getClass return value.
28  * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:DisableIntrinsic=_getClass
29  *                   -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,compiler.escapeAnalysis.TestGetClass::test
30  *                   -XX:+PrintCompilation compiler.escapeAnalysis.TestGetClass
31  * @run main/othervm -XX:-TieredCompilation -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:ControlIntrinsic=-_getClass
32  *                   -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,compiler.escapeAnalysis.TestGetClass::test
33  *                   -XX:+PrintCompilation compiler.escapeAnalysis.TestGetClass
34  */
35 
36 package compiler.escapeAnalysis;
37 
38 public class TestGetClass {
39     static Object obj = new Object() {};
40 
41     public static boolean test() {
42         if (obj.getClass().getSuperclass() == Object.class) {
43             synchronized (obj) {
44                 return true;
45             }
46         }
47         return false;
48     }
49 
50     public static void main(String[] args) {
51         if (!test()) {
52             throw new RuntimeException("Test failed");
53         }
54     }
55 }