[Python-Dev] [Python 2.4] PyInt_FromLong returning NULL

Tim Peters tim.peters at gmail.com
Tue Dec 7 20:10:20 CET 2004


[Andreas Jung]
> Sorry, false alarm :-(  There assignment of the NULL occurs in the
> if-clause of the corresponding code (I have overseen the ASSIGN
> call):

Thanks for the followup!

>                    if (! PyInt_Check(p))
>                      {
>                        if (PyDict_Check(p))
>                          {
>                            if (PyString_Check(name) ||
> PyUnicode_Check(name))
>                              {
>                                ASSIGN(p, PyObject_GetItem(p, name));
>                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
>                                if (p == NULL) {
>                                    puts("PyObject returned NULL");
>                                  PyErr_Clear();
>                                }
>                              }
>                            else
>                              p = PyInt_FromLong((long)1);
>
> ...doing some further investigations on that.

I note that all of this is nested inside another "if (p) {...}" block.
 That implies the "p = PyInt_FromLong((long)1);" line is at least a
memory leak:  it overwrites p without decref'ing p first.


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