Mailman 3 Segmentation Fault (core dumped) on Python 3.5.2 but not Python 2.7.12 - Cplusplus-sig

Aug. 4, 2016

      So I'm trying to create a boost python module that simply creates and
returns a numpy array,
but the function crashes (sometimes) and it doesn't ever seem to crash on
Python 2.

Here's the source code I made:

#include <boost/python.hpp>
#include <numpy/ndarrayobject.h>

using namespace boost::python;

object create_numpy_array() {
npy_intp dims = 1;
long* data = new long[1];
data[0] = 1;
PyObject* obj = PyArray_SimpleNewFromData(1, &dims, PyArray_LONGLTR, data);
boost::python::handle<> handle(obj);
boost::python::numeric::array arr(handle);
return arr.copy();
}

BOOST_PYTHON_MODULE(create) {
import_array();
numeric::array::set_module_and_type("numpy", "ndarray");
def("numpy_array", &create_numpy_array);
}

using a simple python script to test:

import create
print(create.numpy_array())

The stack trace indicates that the crash occurs on a boost::python::handle
destructor trying to decrease the ref count of a PyObject with a ref count
of 0.

I've tried this on both Windows 7 and Ubuntu 16.04 both 64-bit.

Thank you.

Segmentation Fault (core dumped) on Python 3.5.2 but not Python 2.7.12

Matthew Conte

Stefan Seefeld

Matthew Conte

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