1 /*

     2  * Copyright (c) 2013, 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 8026735

    27  * @summary CHA in C1 should make correct decisions about default methods

    28  * @run main/othervm -Xcomp -XX:CompileOnly=InlineDefaultMethod::test -XX:TieredStopAtLevel=1 InlineDefaultMethod

    29  */

    30 

    31 

    32 interface InterfaceWithDefaultMethod0 {

    33     default public int defaultMethod() {

    34         return 1;

    35     }

    36 }

    37 

    38 interface InterfaceWithDefaultMethod1 extends InterfaceWithDefaultMethod0 { }

    39 

    40 abstract class Subtype implements InterfaceWithDefaultMethod1 { }

    41 

    42 class Decoy extends Subtype {

    43     public int defaultMethod() {

    44         return 2;

    45     }

    46 }

    47 

    48 class Instance extends Subtype { }

    49 

    50 public class InlineDefaultMethod {

    51     public static int test(InterfaceWithDefaultMethod1 x) {

    52         return x.defaultMethod();

    53     }

    54     public static void main(String[] args) {

    55         InterfaceWithDefaultMethod1 a = new Decoy();

    56         InterfaceWithDefaultMethod1 b = new Instance();

    57         if (test(a) != 2 ||

    58             test(b) != 1) {

    59           System.err.println("FAILED");

    60           System.exit(97);

    61         }

    62         System.err.println("PASSED");

    63     }

    64 }