Ticket #41 (closed defect: fixed)

Opened 6 years ago

Last modified 6 years ago

Bug accessing internals of Python long

Reported by: casevh@… Owned by: somebody
Priority: critical Milestone:
Component: Code Generation Keywords: MESSAGE
Cc: Quatre, Bornes


I am trying to access the internal structure of a Python long. The code fragment below works when I use Pyrex but generates a compile error when using Cython 0.9.8.

The code:

cdef extern from "Python.h":

ctypedef struct PyTypeObject?:


ctypedef struct PyObject?:

Py_ssize_t ob_refcnt PyTypeObject? * ob_type

cdef extern from "longintrepr.h":

cdef struct _longobject:

int ob_refcnt PyTypeObject? * ob_type int ob_size unsigned int * ob_digit

def test(temp = long(0)):

cdef _longobject *l l = <_longobject *> temp print sizeof(l.ob_size) print sizeof(l.ob_digit[0])

Change History

Changed 6 years ago by robertwb

  • priority changed from major to critical

Changed 6 years ago by robertwb

This is due to #51

Changed 6 years ago by robertwb

  • status changed from new to closed
  • resolution set to fixed

Changed 6 years ago by robertwb

  • milestone set to

Changed 6 years ago by SRJamess

  • cc Quatre, Bornes added
  • keywords MESSAGE added

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