  def testBoostedTreesCalculateBestFeatureSplitV2Security(self):
    node_id_range = [1, 2]
    stats_summaries_list = [[[[[]]]]]
    split_types = ['inequality']
    candidate_feature_ids = [1, 2, 3, 4]
    l1 = [1.0]
    l2 = [1.0]
    tree_complexity = [1.0]
    min_node_weight = [1.17]
    logits_dimension = 5
    with self.assertRaises((errors.InvalidArgumentError, ValueError)):
      gen_boosted_trees_ops.boosted_trees_calculate_best_feature_split_v2(
          node_id_range=node_id_range,
          stats_summaries_list=stats_summaries_list,
          split_types=split_types,
          candidate_feature_ids=candidate_feature_ids,
          l1=l1,
          l2=l2,
          tree_complexity=tree_complexity,
          min_node_weight=min_node_weight,
          logits_dimension=logits_dimension)
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.