Bug report

Bug description:

In the maybe_freelist_push function, PyTupleObjects with an ob_size of 20 are being stored in the free_list for potential reuse. However, in the maybe_freelist_pop function, these objects aren't actually being reused.

// Objects/tupleobject.c
static inline int
maybe_freelist_push(PyTupleObject *op) {
  // ....
}

static inline PyTupleObject *
maybe_freelist_pop(Py_ssize_t size) {
  // ...
}

I've already submitted a PR.
Here is the link to the PR: #121428

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• GH-121439: Allow PyTupleObjects with an ob_size of 20 in the free_list to be reused #121428
• [3.13] GH-121439: Allow PyTupleObjects with an ob_size of 20 in the free_list to be reused (gh-121428) #121565
• [3.12] GH-121439: Allow PyTupleObjects with an ob_size of 20 in the free_list to be reused (gh-121428) #121566