According to the documentation, PyObject_CopyData takes two arguments of type Py_buffer*:

But in the implementation, it actually takes two arguments of PyObject*:

Linked PRs

• gh-102383: [docs] Arguments of PyObject_CopyData are PyObject * #102390
• [3.11] gh-102383: [docs] Arguments of PyObject_CopyData are PyObject * (GH-102390) #102401