langtools/test/tools/javac/lambda/MostSpecific04.java
author vromero
Mon, 02 Sep 2013 22:38:36 +0100
changeset 19914 d86271bd430a
parent 14547 86d8d242b0c4
permissions -rw-r--r--
8016177: structural most specific and stuckness Reviewed-by: jjg, vromero Contributed-by: maurizio.cimadamore@oracle.com

/*
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 8003280
 * @summary Add lambda tests
 *  Structural most specific doesn't handle cases with wildcards in functional interfaces
 * @compile/fail/ref=MostSpecific04.out -XDrawDiagnostics MostSpecific04.java
 */
public class MostSpecific04 {

    interface DoubleMapper<T> {
        double map(T t);
    }

    interface LongMapper<T> {
        long map(T t);
    }

    static class MyList<E> {
        void map(DoubleMapper<? super E> m) { }
        void map(LongMapper<? super E> m) { }
    }

    public static void main(String[] args) {
        MyList<String> ls = new MyList<String>();
        ls.map(e->e.length()); //ambiguous - implicit
        ls.map((String e)->e.length()); //ok
    }
}