1 /*
   2  * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 /* @test
  25  * @summary test C1 arraycopy intrinsic
  26  * @run main/othervm -XX:TieredStopAtLevel=1 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive C1ArrayCopyNPE
  27  */
  28 
  29 public class C1ArrayCopyNPE {
  30 
  31     private static final int NUM_RUNS = 10000;
  32     private static final int ARRAY_SIZE=10000;
  33     private static int[] a;
  34     private static int[] b;
  35 
  36     public static void main(String[] args) {
  37         a = null;
  38         b = new int[ARRAY_SIZE];
  39         for (int i = 0; i < NUM_RUNS; i++) {
  40             test();
  41         }
  42         a = new int[ARRAY_SIZE];
  43         b = null;
  44         for (int i = 0; i < NUM_RUNS; i++) {
  45             test();
  46         }
  47     }
  48 
  49     private static void test() {
  50         try {
  51             System.arraycopy(a, 0, b, 0, ARRAY_SIZE);
  52             throw new RuntimeException("test failed");
  53         } catch (NullPointerException ex) {
  54             // Ok
  55         }
  56     }
  57 }