This implemention doesn't take in account case when PyList_New returns NULL.
If PyList_New(0) returns a NULL, PyList_Append will be failed with segfault, cause of Py_TYPE, which will try to reach out ob_type. of (PyObject *) NULL.
This hard to reproduce, because the only way PyList_New can error, if it is runs out of memory, but theoretically it can happen.

Linked PRs

• gh-101967: add a missing error check #101968
• [3.10] gh-101967: add a missing error check (GH-101968) #102016
• [3.11] gh-101967: add a missing error check (GH-101968) #102015
• [3.9] gh-101967: add a missing error check (GH-101968) #114738