Function tp_dealloc_impl

include/pybind11/pybind11.h:1413–1423

// This implementation needs the definition of `class cpp_function`.
inline void tp_dealloc_impl(PyObject *self) {
    // Save type before PyObject_Free invalidates self.
    auto *type = Py_TYPE(self);
    auto *py_func_rec = reinterpret_cast<function_record_PyObject *>(self);
    cpp_function::destruct(py_func_rec->cpp_func_rec);
    py_func_rec->cpp_func_rec = nullptr;
    // PyObject_New increments the heap type refcount and allocates via
    // PyObject_Malloc; balance both here
    PyObject_Free(self);
    Py_DECREF(type);
}

PYBIND11_NAMESPACE_END(function_record_PyTypeObject_methods)