gh-151377: Fix races updating type slots and subclasses - #155370

gh-151377: Fix races updating type slots and subclasses#155370

nascheme wants to merge 1 commit into

python:mainpython/cpython:mainfrom

nascheme:gh-151377-type-data-racenascheme/cpython:gh-151377-type-data-raceCopy head branch name to clipboard