1 /*
   2  * Copyright (c) 2016, 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 /*
  26  * @test TestStableMismatched
  27  * @bug 8158228
  28  * @summary Tests if mismatched char load from stable byte[] returns correct result
  29  * @run main/othervm -XX:-CompactStrings -XX:TieredStopAtLevel=1 -Xcomp
  30  *                   -XX:CompileOnly=TestStableMismatched::test,::charAt
  31  *                   TestStableMismatched
  32  * @run main/othervm -XX:-CompactStrings -XX:-TieredCompilation -Xcomp
  33  *                   -XX:CompileOnly=TestStableMismatched::test,::charAt
  34  *                   TestStableMismatched
  35  */
  36 public class TestStableMismatched {
  37     public static void main(String args[]) {
  38         test();
  39     }
  40 
  41     public static void test() {
  42         String text = "abcdefg";
  43         // Mismatched char load from @Stable byte[] String.value field
  44         char returned = text.charAt(6);
  45         if (returned != 'g') {
  46             throw new RuntimeException("failed: charAt(6) returned '" + returned + "' instead of 'g'");
  47         }
  48     }
  49 }
  50