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 }