1 /* 2 * Copyright (c) 2014, 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 * @test 26 * @bug 8055910 27 * @summary Arrays.copyOf doesn't perform subtype check 28 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement TestArraysCopyOfNoTypeCheck 29 * 30 */ 31 32 import java.util.Arrays; 33 34 public class TestArraysCopyOfNoTypeCheck { 35 36 static class A { 37 } 38 39 static class B extends A { 40 } 41 42 static B[] test(A[] arr) { 43 return Arrays.copyOf(arr, 10, B[].class); 44 } 45 46 static public void main(String[] args) { 47 A[] arr = new A[20]; 48 for (int i = 0; i < 20000; i++) { 49 test(arr); 50 } 51 A[] arr2 = new A[20]; 52 arr2[0] = new A(); 53 boolean exception = false; 54 try { 55 test(arr2); 56 } catch (ArrayStoreException ase) { 57 exception = true; 58 } 59 if (!exception) { 60 throw new RuntimeException("TEST FAILED: ArrayStoreException not thrown"); 61 } 62 } 63 }