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 TestC1ArrayCopyNPE 25 * @summary test C1 arraycopy intrinsic 26 * @key gc 27 * @requires vm.gc.Shenandoah 28 * @run main/othervm -XX:TieredStopAtLevel=1 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive TestC1ArrayCopyNPE 29 */ 30 31 public class TestC1ArrayCopyNPE { 32 33 private static final int NUM_RUNS = 10000; 34 private static final int ARRAY_SIZE = 10000; 35 private static int[] a; 36 private static int[] b; 37 38 public static void main(String[] args) { 39 a = null; 40 b = new int[ARRAY_SIZE]; 41 for (int i = 0; i < NUM_RUNS; i++) { 42 test(); 43 } 44 a = new int[ARRAY_SIZE]; 45 b = null; 46 for (int i = 0; i < NUM_RUNS; i++) { 47 test(); 48 } 49 } 50 51 private static void test() { 52 try { 53 System.arraycopy(a, 0, b, 0, ARRAY_SIZE); 54 throw new RuntimeException("test failed"); 55 } catch (NullPointerException ex) { 56 // Ok 57 } 58 } 59 }