Bug report
Bug description:
While working on #126908, @vstinner noted that this part of PyUnstable_AtExit looks wrong:
| else { | |
| state->last_ll_callback->next = callback; | |
| } |
This will result in loss of callbacks after one has been stored, because the second-to-last one is always overwritten. Noted in gh-118915, PyUnstable_AtExit is also undocumented. I'll work on fixing both.
CPython versions tested on:
3.13, 3.14, CPython main branch
Operating systems tested on:
Linux