PyInterpreterState.config.int_max_str_digits Should Not Be Modified

PyConfig is for configuring the runtime during initialization, not for storing runtime state. Currently in sys.set_int_max_str_digits() we are modifying the interpreter's PyConfig directly.

That field should never be modified outside runtime init. Instead, the config value should be copied to a field on PyInterpreterState and that is what should be modified by sys (and used in longobject.c).

In fact, this is mostly what we were doing until a couple weeks ago (and what we still are doing in 3.11 and earlier). This was changed on main (3.12) in gh-96944. The fix is relatively trivial.

CC @gpshead

Linked PRs

• gh-152869

sys.set_int_max_str_digits() と PyConfig および PyInterpreterState の定義を追跡し、続いて longobject.c での limit の使用箇所を調べます。現在の main ブランチの動作を Python 3.11 および関連する gh-152869 の作業と比較します。runtime initialization が値を interpreter state にコピーし、sys と longobject.c が PyConfig を変更せずにその state を使用すれば完了です。