gh-157384: Refuse inittab names in PyImport_CreateModuleFromInitfunc() - #157388
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…tfunc() Modules created by PyImport_CreateModuleFromInitfunc() share the extensions cache and sys.modules with built-in modules. Passing a spec whose name is registered in PyImport_Inittab either silently ignored the init function (for an already loaded single-phase builtin, or for "sys" and "builtins") or replaced the built-in module in sys.modules (for a multi-phase builtin). Raise ImportError instead. Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01HoZE3WdRWQshvinfBZ137N
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September 13, 2026 01:43
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Modules created by PyImport_CreateModuleFromInitfunc() share the extensions cache and sys.modules with built-in modules. Passing a spec whose name is registered in PyImport_Inittab either silently ignored the init function (for an already loaded single-phase builtin, or for "sys" and "builtins") or replaced the built-in module in sys.modules (for a multi-phase builtin). Raise ImportError instead.
AI assisted with Claude Fable 5.1
PyImport_CreateModuleFromInitfunc(): wrong__name__for submodules, non-ASCII names rejected, inittab name clashes #157384