access violation with C API

[cptnwillard]

Hello all,

The following triggers an "access violation" error, why?

pPyType = (PyTypeObject*)malloc(sizeof(PyTypeObject));
memset(pPyType, 0, sizeof(PyTypeObject));
pPyType->ob_refcnt = 1;
pPyType->tp_name = "noname";
pPyType->tp_basicsize = sizeof(MyObject);
pPyType->tp_flags = Py_TPFLAGS_DEFAULT;
pPyType->tp_doc = "nodoc";
PyType_Ready(pPyType);

Thanks.