--- /dev/null 2018-11-30 10:10:44.238550338 +0100 +++ new/test/hotspot/jtreg/gc/shenandoah/compiler/TestC1ArrayCopyNPE.java 2018-11-30 21:07:13.170885752 +0100 @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2018, Red Hat, Inc. All rights reserved. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +/* @test TestC1ArrayCopyNPE + * @summary test C1 arraycopy intrinsic + * @key gc + * @requires vm.gc.Shenandoah + * @run main/othervm -XX:TieredStopAtLevel=1 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive TestC1ArrayCopyNPE + */ + +public class TestC1ArrayCopyNPE { + + private static final int NUM_RUNS = 10000; + private static final int ARRAY_SIZE = 10000; + private static int[] a; + private static int[] b; + + public static void main(String[] args) { + a = null; + b = new int[ARRAY_SIZE]; + for (int i = 0; i < NUM_RUNS; i++) { + test(); + } + a = new int[ARRAY_SIZE]; + b = null; + for (int i = 0; i < NUM_RUNS; i++) { + test(); + } + } + + private static void test() { + try { + System.arraycopy(a, 0, b, 0, ARRAY_SIZE); + throw new RuntimeException("test failed"); + } catch (NullPointerException ex) { + // Ok + } + } +}