https://abdull.dev/ Writing on CPython internals, systems, and things I build. en https://abdull.dev/posts/fixing-cpython-bugs-1-use-after-free-context-eq.html https://abdull.dev/posts/fixing-cpython-bugs-1-use-after-free-context-eq.html Fri, 04 Sep 2026 09:34:32 +0100 How comparing two contextvars.Context objects could crash the Python interpreter, and how the fix works. First in a series for anyone who wants to understand the CPython codebase or make their first contribution to it.