}
}

func BenchmarkDevirtFuncClosure(b *testing.B) {
	ExerciseFuncClosure(b.N, AddClosure(), SubClosure(), mult.MultClosure(), mult.NegMultClosure())
}

func TestDevirtFuncClosure(t *testing.T) {
	if v := ExerciseFuncClosure(10, AddClosure(), SubClosure(), mult.MultClosure(), mult.NegMultClosure()); v != 1176 {
		t.Errorf("ExerciseFuncClosure(10) got %d want 1176", v)
	}

	}
	return val
}

//go:noinline
func AddClosure() AddFunc {
	// Implicit closure by capturing the receiver.
	var a Add
	return a.Add
}

//go:noinline
func SubClosure() AddFunc {
	var s Sub
	return s.Add
}

// ExerciseFuncClosure calls mostly a1 and m1.
//
// This is a simplified version of ExerciseFuncConcrete, but we need two