Pseudo code:
interface I { void m() default {} }

class C implements I {
  private void m() {}
}

I o = new C(); o.m();

Observed behavior:
invokeinterface: IAE
MH.invoke* / indy: NPE

For MH.invokeExact case bytecode (Test1_I_C_m.class) is the following:
         0: ldc #19 // MethodHandle invokeinterface I.m:()V
         2: new #21 // class C
         5: dup
         6: invokespecial #22 // Method C."<init>":()V
         9: astore_1
        10: aload_1
        11: invokevirtual #28 // Method java/lang/invoke/MethodHandle.invokeExact:(LI;)V

NPE is thrown on bci=11 (MH.invokeExact).

Test case is attached.

How to run:
  $ java Test