here is the patch updated according to your suggestions, Serhiy.


however, I wonder about the case of a too large _length_.
shouldn't we raise a MemoryError in such a case, in accordance with #29833?

BTW, while inspecting code related to a too large _length_, I came across this
(in PyCArrayType_new):
    if (length * itemsize < 0) {
        PyErr_SetString(PyExc_OverflowError,
                        "array too large");
        goto error;
    }
I am not sure, but isn't this check unsafe? (e.g. if length == 2 ** 30, and
itemsize == 4, couldn't the product be 0 on some platforms?)
but maybe the code before this check makes more checks. I didn't make a
thorough inspection...