.. bpo: 41815
.. date: 2020-09-19-23-14-54
.. nonce: RNpuX3
.. release date: 2020-10-04
.. section: Library

Fix SQLite3 segfault when backing up closed database. Patch contributed by
Peter David McCormick.

..

.. bpo: 41662
.. date: 2020-08-30-21-38-57
.. nonce: 6e9iZn
.. section: Library

No longer override exceptions raised in ``__len__()`` of a sequence of
parameters in :mod:`sqlite3` with :exc:`~sqlite3.ProgrammingError`.

..

.. bpo: 41662
.. date: 2020-08-29-16-07-36
.. nonce: Mn79zh
.. section: Library

Fixed crash when mutate list of parameters during iteration in
:mod:`sqlite3`.

..

.. bpo: 39728
.. date: 2020-02-24-10-58-34
.. nonce: kOOaHn
.. section: Library

fix default `_missing_` so a duplicate `ValueError` is not set as the
`__context__` of the original `ValueError`

..

.. bpo: 41602
.. date: 2020-08-25-19-25-36
.. nonce: Z64s0I
.. section: Tests

Add tests for SIGINT handling in the runpy module.

..

.. bpo: 38249
.. date: 2020-09-28-21-56-51
.. nonce: uzMCaZ
.. section: Build

Update :c:macro:`Py_UNREACHABLE` to use __builtin_unreachable() if only the
compiler is able to use it. Patch by Dong-hee Na.
