VTableTest.java

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/*
 * @test
 * @bug 8226798
 * @summary Check that the vTable for class C gets set up without causing
 *          an assertion failure.
 * @compile pkg/A.java
 * @run main VTableTest
 */

public class VTableTest {

    interface Intf {
        public default void m() { }
        public default void unusedButNeededToReproduceIssue() { }
    }

    static class B extends pkg.A implements Intf {
    }

    static class C extends B {
        public void m() { System.out.println("In C.m()"); }
    }

    public static void main(String[] args) {
        new C().m();
    }
}