AttributeError: 'c_int' object has no attribute '_wrapper' on macOS (Intel and ARM/Apple Silicon)

[briandefiant]

Full stacktrace is below. This can be reproduced on macOS by installing WF CLI via pip and running wordfence malware-scan ..

It appears to be related to macOS using the spawn start method for multiprocessing (instead of fork, the default on Linux). Forcing the start method to use fork works around the issue, though that probably isn't advisable.

Traceback (most recent call last):
  File "/opt/homebrew/bin/wordfence", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/wordfence/cli/cli.py", line 181, in main
    exit_code = cli.invoke()
                ^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/wordfence/cli/cli.py", line 175, in invoke
    return self.process_exception(exception)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/wordfence/cli/cli.py", line 102, in process_exception
    raise exception
  File "/opt/homebrew/lib/python3.11/site-packages/wordfence/cli/cli.py", line 171, in invoke
    return self.subcommand.invoke()
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/wordfence/cli/malwarescan/malwarescan.py", line 181, in invoke
    self.scanner.scan(
  File "/opt/homebrew/lib/python3.11/site-packages/wordfence/scanning/scanner.py", line 787, in scan
    with ScanWorkerPool(
  File "/opt/homebrew/lib/python3.11/site-packages/wordfence/scanning/scanner.py", line 597, in __enter__
    self.start()
  File "/opt/homebrew/lib/python3.11/site-packages/wordfence/scanning/scanner.py", line 654, in start
    worker.start()
  File "/opt/homebrew/Cellar/python@3.11/3.11.5/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
                  ^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/python@3.11/3.11.5/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/python@3.11/3.11.5/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/context.py", line 288, in _Popen
    return Popen(process_obj)
           ^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/python@3.11/3.11.5/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/popen_spawn_posix.py", line 32, in __init__
    super().__init__(process_obj)
  File "/opt/homebrew/Cellar/python@3.11/3.11.5/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/popen_fork.py", line 19, in __init__
    self._launch(process_obj)
  File "/opt/homebrew/Cellar/python@3.11/3.11.5/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/popen_spawn_posix.py", line 47, in _launch
    reduction.dump(process_obj, fp)
  File "/opt/homebrew/Cellar/python@3.11/3.11.5/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/reduction.py", line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
  File "/opt/homebrew/Cellar/python@3.11/3.11.5/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/sharedctypes.py", line 133, in reduce_ctype
    return rebuild_ctype, (type(obj), obj._wrapper, None)
                                      ^^^^^^^^^^^^
AttributeError: 'c_int' object has no attribute '_wrapper'

[ewodrich]

Verified the error is no longer occurring on Mac.

First, verified I received the error Error: 'c_int' object has no attribute '_wrapper' when running wordfence malware-scan . on Mac Ventura running CLI 2.0.3. Installed the latest test CLI version, 2.1.0 rc2, and retried the command wordfence malware-scan . which ran through the scan without error and produced expected results.