test/langtools/tools/javac/lambda/MostSpecific29.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * 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 8144767
 * @summary Correct most-specific test when wildcards appear in functional interface type
 */
public class MostSpecific29 {

    public static void main(String[] args) {
        new MostSpecific29().test();
    }

    interface Pred<T> { boolean test(T arg); }
    interface Fun<T,R> { R apply(T arg); }

    static void m1(Pred<? super Integer> f) {}
    static void m1(Fun<Integer, Boolean> f) {
        throw new AssertionError("Less-specific method invocation.");
    }

    void test() {
        m1((Integer n) -> true);
    }

}