1 /*
   2  * Copyright (c) 2019, 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  */
  32 
  33 package compiler.escapeAnalysis;
  34 
  35 public class TestGetClass {
  36     static Object obj = new Object();
  37 
  38     public static boolean test() {
  39         if (obj.getClass() == Object.class) {
  40             synchronized (obj) {
  41                 return true;
  42             }
  43         }
  44         return false;
  45     }
  46 
  47     public static void main(String[] args) {
  48         if (!test()) {
  49             throw new RuntimeException("Test failed");
  50         }
  51     }
  52 }