1 /*
   2  * Copyright (c) 2008, 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 6695810
  27  * @summary null oop passed to encode_heap_oop_not_null
  28  *
  29  * @run main/othervm -Xbatch compiler.c2.Test6695810
  30  */
  31 
  32 package compiler.c2;
  33 
  34 public class Test6695810 {
  35     Test6695810 _t;
  36 
  37     static void test(Test6695810 t1, Test6695810 t2) {
  38         if (t2 != null)
  39             t1._t = t2;
  40 
  41         if (t2 != null)
  42             t1._t = t2;
  43     }
  44 
  45     public static void main(String[] args) {
  46         Test6695810 t = new Test6695810();
  47         for (int i = 0; i < 50; i++) {
  48             for (int j = 0; j < 100; j++) {
  49                 test(t, t);
  50             }
  51             test(t, null);
  52         }
  53         for (int i = 0; i < 10000; i++) {
  54             test(t, t);
  55         }
  56         test(t, null);
  57     }
  58 }