gh-143200: fix UAFs in Element.__{set,get}item__ when the element is concurrently mutated#143226

picnixz merged 4 commits into

python:mainpython/cpython:mainfrom

picnixz:fix/xml/uaf-in-sub-143200picnixz/cpython:fix/xml/uaf-in-sub-143200Copy head branch name to clipboard