[C++-sig] weird runtime error I'm getting with PyRun_SimpleFile()

[Blake Skinner]

Here's my C++ code, I'm building with VS 2005, under multi-threaded:

#include <Python/python.h>
#include <iostream>
#include <cstdio>
using namespace std;

int main(int argc, char **argv)
{
    Py_Initialize();

    PyObject *main_module = PyImport_AddModule("__main__");
    PyObject *main_dict = PyModule_GetDict(main_module);

    FILE *f = fopen("test.py", "r");
    PyRun_SimpleFile(f, "test.py");

    if (PyDict_GetItemString(main_dict, "num") == NULL)
        cout << "No" << endl;
    else
        cout << "Yes" << endl;

    Py_Finalize();
    return 0;

}

When I run it, I get an error:

Unhandled exception at 0x7c918fea in Embed_practice.exe: 0xC0000005: Access
violation writing location 0x00000010

from a file called _file.c, the debugger calls attention to this method
specificially:

/***
* _lock_file - Lock a FILE
*
*Purpose:
*       Assert the lock for a stdio-level file
*
*Entry:
*       pf = __piob[] entry (pointer to a FILE or _FILEX)
*
*Exit:
*
*Exceptions:
*
*******************************************************************************/
void __cdecl _lock_file (
        FILE *pf
        )
{
        /*
         * The way the FILE (pointed to by pf) is locked depends on whether
         * it is part of _iob[] or not
         */
        if ( (pf >= _iob) && (pf <= (&_iob[_IOB_ENTRIES-1])) )
            /*
             * FILE lies in _iob[] so the lock lies in _locktable[].
             */
            _lock( _STREAM_LOCKS + (int)(pf - _iob) );
        else
            /*
             * Not part of _iob[]. Therefore, *pf is a _FILEX and the
             * lock field of the struct is an initialized critical
             * section.
             */
            EnterCriticalSection( &(((_FILEX *)pf)->lock) );
}

Any help solving this would be appreciated.
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