Make the doctest actually run & fix it.

Author: gpshead

Doc/library/stdtypes.rst

@@ -5277,6 +5277,8 @@ and the sign are not counted towards the limit.
 
 When an operation would exceed the limit, a :exc:`ValueError` is raised::
 
+.. doctest::
+
    >>> import sys
    >>> sys.set_int_max_str_digits(4300)  # Illustrative, this is the default.
    >>> _ = int('2' * 5432)
@@ -5293,7 +5295,7 @@ When an operation would exceed the limit, a :exc:`ValueError` is raised::
    ValueError: Exceeds the limit (4300) for integer string conversion: value has 8599 digits.
    >>> len(hex(i_squared))
    7144
-   >>> assert int(hex(i_squared), base=16) == i  # Hexidecimal is unlimited.
+   >>> assert int(hex(i_squared), base=16) == i*i  # Hexidecimal is unlimited.
 
 The default limit is 4300 digits as provided in
 :data:`sys.int_info.default_max_str_digits <sys.int_info>`.

Misc/NEWS.d/next/Security/2022-08-07-16-53.gh-issue-95778.ch010gps.rst

@@ -10,5 +10,5 @@ line flag, or :mod:`sys` APIs. See the :ref:`integer string conversion length
 limitation <int_max_str_digits>` documentation.  The default limit is 4300
 digits in string form.
 
-Patch by Gregory P. Smith [Google]  and Christian Heimes [Red Hat] with feedback from
-Victor Stinner, Thomas Wouters, and Steve Dower.
+Patch by Gregory P. Smith [Google] and Christian Heimes [Red Hat] with feedback
+from Victor Stinner, Thomas Wouters, Steve Dower, and Ned Deily.