STINNER Victor <victor.stinner@haypocalc.com> added the comment: y* and z* result is a Py_buffer, but in C you have to pass a reference to the result variable using &result. Full example: static PyObject * getargs_y_star(PyObject *self, PyObject *args) { Py_buffer buffer; PyObject *bytes; if (!PyArg_ParseTuple(args, "y*", &buffer)) return NULL; bytes = PyBytes_FromStringAndSize(buffer.buf, buffer.len); PyBuffer_Release(&buffer); return bytes; } Another example: "s" format result is char* (and not char**). You also have to pass a reference using &: static PyObject * getargs_s(PyObject *self, PyObject *args) { char *str; if (!PyArg_ParseTuple(args, "s", &str)) return NULL; return PyBytes_FromString(str); } ---------- resolution: -> invalid status: open -> closed _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue9158> _______________________________________

STINNER Victor <victor.stinner@haypocalc.com> added the comment: Oh ok, sorry. Fixed in r82597 (3.x) and r82598 (3.1). ---------- resolution: invalid -> fixed _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue9158> _______________________________________