code: def test_seg_fault_raises_error(self):
      if multi_process_runner.is_oss() or sys.version_info >= (3, 7):
          self.skipTest(
              "TODO(b/171004637): Failing in OSS and Python 3.7+"
          )
  
      def fn_expected_to_seg_fault():
          ctypes.string_at(0)  # Intentionally made seg fault.
  
      with self.assertRaises(
          multi_process_runner.UnexpectedSubprocessExitError
      ) as cm:
          multi_process_runner.run(
              fn_expected_to_seg_fault,
              multi_worker_test_base.create_cluster_spec(num_workers=1),
              return_output=True,
          )
      self.assertIn(
          "Subprocess worker-0 exited with exit code", str(cm.exception)
      )
      list_to_assert = cm.exception.mpr_result.stdout
      self.assertTrue(
          any("Segmentation fault" in line for line in list_to_assert)
      )
  
imports: import ctypes
  import json
  import os
  import sys
  import threading
  import time
  import unittest
  from absl import logging
  from absl.testing import parameterized
  from tensorflow.python.distribute import combinations
  from tensorflow.python.distribute import multi_process_runner
  from tensorflow.python.distribute import multi_worker_test_base
  from tensorflow.python.eager import context
  from tensorflow.python.eager import test
label_desc: Use image node_id 15 for calling the MultiProcessRunnerTest obj's underlying member method code with example usage: obj.test_seg_fault_raises_error() without return types