test/langtools/tools/javac/defaultMethods/Pos06.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 7192246
 * @summary check that well-formed MI hierarchies behaves well w.r.t. method resolution (i.e. no ambiguities)
 * @author  Maurizio Cimadamore
 * @compile Pos06.java
 */

class Pos06 {
     interface A {
         default void m() { Pos06.impl(this); }
     }

     interface B extends A {
         default void m() { Pos06.impl(this); }
     }

     static class X implements A, B { }

     void test(X x) {
         x.m();
         ((A)x).m();
         ((B)x).m();
     }

     static void impl(Object a) { }
}