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Change the value of ``CLEANBYTE``, ``DEADDYTE`` and ``FORBIDDENBYTE`` internal
constants used by debug hooks on Python memory allocators
(:c:func:`PyMem_SetupDebugHooks` function). Byte patterns ``0xCB``, ``0xDB``
and ``0xFB`` have been replaced with ``0xCD``, ``0xDD`` and ``0xFD`` to use the
same values than Windows CRT debug ``malloc()`` and ``free()``.