test/langtools/tools/javac/T8148354/IntersectionFunctionalButComponentsNotTest.java

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/*
 * @test
 * bug 8148354
 * @summary Errors targeting functional interface intersection types
 * @compile IntersectionFunctionalButComponentsNotTest.java
 */
class IntersectionFunctionalButComponentsNotTest {
    // nor A or B are functional interfaces but the intersection is
    <T extends Object & A & B> void consume(T arg) { }

    void foo() {
        consume(System::gc);
    }

    interface C {
        void c();
    }

    interface A extends C {
        void a();
    }

    interface B extends C {
        default void c() { }
    }
}