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 }