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Note the buffer slots can be set with PyType_Spec with the unlimited … #22031

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Sep 2, 2020
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Note the buffer slots can be set with PyType_Spec with the unlimited … #22031

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11 changes: 10 additions & 1 deletion Doc/c-api/type.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -225,7 +225,8 @@ The following functions and structs are used to create
* ``Py_nb_add`` to set :c:member:`PyNumberMethods.nb_add`
* ``Py_sq_length`` to set :c:member:`PySequenceMethods.sq_length`

The following fields cannot be set using :c:type:`PyType_Spec` and :c:type:`PyType_Slot`:
The following fields cannot be set at all using :c:type:`PyType_Spec` and
:c:type:`PyType_Slot`:

* :c:member:`~PyTypeObject.tp_dict`
* :c:member:`~PyTypeObject.tp_mro`
Expand All @@ -239,13 +240,21 @@ The following functions and structs are used to create
(see :ref:`PyMemberDef <pymemberdef-offsets>`)
* :c:member:`~PyTypeObject.tp_vectorcall_offset`
(see :ref:`PyMemberDef <pymemberdef-offsets>`)

The following fields cannot be set using :c:type:`PyType_Spec` and
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Should this contain a versionchanged annotation?

:c:type:`PyType_Slot` under the limited API:

* :c:member:`~PyBufferProcs.bf_getbuffer`
* :c:member:`~PyBufferProcs.bf_releasebuffer`

Setting :c:data:`Py_tp_bases` may be problematic on some platforms.
To avoid issues, use the *bases* argument of
:py:func:`PyType_FromSpecWithBases` instead.

.. versionchanged:: 3.9

Slots in :c:type:`PyBufferProcs` in may be set in the unlimited API.

.. c:member:: void *PyType_Slot.pfunc

The desired value of the slot. In most cases, this is a pointer
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