langtools/test/tools/javac/generics/diamond/neg/Neg05.java

/*
 * @test /nodynamiccopyright/
 * @bug 6939620 7020044
 *
 * @summary  Check that usage of rare types doesn't cause spurious diamond diagnostics
 * @author mcimadamore
 * @compile/fail/ref=Neg05.out Neg05.java -XDrawDiagnostics
 *
 */

class Neg05<U> {

    class Foo<V> {
        Foo(V x) {}
        <Z> Foo(V x, Z z) {}
    }

    void testRare_1() {
        Neg05<?>.Foo<String> f1 = new Neg05.Foo<>("");
        Neg05<?>.Foo<? extends String> f2 = new Neg05.Foo<>("");
        Neg05<?>.Foo<?> f3 = new Neg05.Foo<>("");
        Neg05<?>.Foo<? super String> f4 = new Neg05.Foo<>("");

        Neg05<?>.Foo<String> f5 = new Neg05.Foo<>("", "");
        Neg05<?>.Foo<? extends String> f6 = new Neg05.Foo<>("", "");
        Neg05<?>.Foo<?> f7 = new Neg05.Foo<>("", "");
        Neg05<?>.Foo<? super String> f8 = new Neg05.Foo<>("", "");
    }

    void testRare_2(Neg05 n) {
        Neg05<?>.Foo<String> f1 = n.new Foo<>("");
        Neg05<?>.Foo<? extends String> f2 = n.new Foo<>("");
        Neg05<?>.Foo<?> f3 = n.new Foo<>("");
        Neg05<?>.Foo<? super String> f4 = n.new Foo<>("");

        Neg05<?>.Foo<String> f5 = n.new Foo<>("", "");
        Neg05<?>.Foo<? extends String> f6 = n.new Foo<>("", "");
        Neg05<?>.Foo<?> f7 = n.new Foo<>("", "");
        Neg05<?>.Foo<? super String> f8 = n.new Foo<>("", "");
    }
}