code: def _crash(delay=None):
      """Induces a segfault."""
      if delay:
          time.sleep(delay)
      import faulthandler
  
      faulthandler.disable()
      faulthandler._sigsegv()
  
imports: import contextlib
  import queue
  import signal
  import sys
  import time
  import unittest
  import unittest.mock
  from pickle import PicklingError
  from concurrent import futures
  from concurrent.futures.process import BrokenProcessPool, _ThreadWakeup
  from test import support
  from .util import create_executor_tests, setup_module, ProcessPoolForkMixin, ProcessPoolForkserverMixin, ProcessPoolSpawnMixin
label_desc: Use image node_id 1 for calling a global function with example usage: _crash(delay) without return types