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 }