datetime_strptime is 'NoneType' when restart cpython

[marin-man]

Bug report

Bug description:

When executing the following code, it will appear TypeError: 'NoneType' object is not callable

#include "Python.h"
#include <iostream>

void py_test() {
 Py_Initialize();
 auto pName = PyUnicode_DecodeFSDefault("datetime");
 auto pModule = PyImport_Import(pName);
 auto datetime = PyObject_GetAttrString(pModule, "datetime");
 auto strptime = PyObject_GetAttrString(datetime, "strptime");
 auto args = PyTuple_New(2);
 PyTuple_SetItem(args, 0, PyUnicode_FromString("2000-01"));
 PyTuple_SetItem(args, 1, PyUnicode_FromString("%Y-%m"));
 auto res = PyObject_CallObject(strptime, args);
 PyObject_Print(res, stdout, 0);
 Py_Finalize();
}

int main() {
 py_test();
 std::cout << "========" << std::endl;
 py_test();
 return 0;
}

CPython versions tested on:

3.11

Operating systems tested on:

macOS

Linked PRs

• [3.11] gh-117914: fix datetime_strptime when restart cpython #117915

[serhiy-storchaka]

Is it Python 3.11 only issue? Is it reproduced in 3.12 or in the main branch?

[marin-man]

Is it Python 3.11 only issue? Is it reproduced in 3.12 or in the main branch?

Python 3.12 and main branch seems to be worse, it crashes on import after restart.

#include "Python.h"
#include <iostream>

void py_test() {
 Py_Initialize();
 auto pName = PyUnicode_DecodeFSDefault("datetime");
 auto pModule = PyImport_Import(pName);
 Py_Finalize();
}

int main() {
 py_test();
 std::cout << "========" << std::endl;
 py_test();
 return 0;
}

========
a.out(39618,0x7ff8589827c0) malloc: *** error for object 0x10bffedc0: pointer being freed was not allocated
a.out(39618,0x7ff8589827c0) malloc: *** set a breakpoint in malloc_error_break to debug
[1] 39618 abort ./a.out

[serhiy-storchaka]

If the bug is not 3.11 specific, the PR should be created for the main branch.

[ericsnowcurrently]

This appears to be a duplicate of gh-71587. If I'm mistaken, please re-open.