python / cpython Public

…H-28620)

(cherry picked from commit 6c1154b)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>

…hen building (GH-28393) (GH-28622)

(cherry picked from commit f4b94b1)

Co-authored-by: Steve Dower <steve.dower@python.org>

…H-18170) (GH-28535)

(cherry picked from commit af90b54)

Co-authored-by: Sam Sneddon <me@gsnedders.com>

(cherry picked from commit fa15df7)

Co-authored-by: Raymond Hettinger <rhettinger@users.noreply.github.com>

…or upcoming update (GH-27982) (GH-28001)

Also improve the build script for libffi, which is not used as part of the regular build.
(cherry picked from commit 969ae7f)

Co-authored-by: Steve Dower <steve.dower@python.org>

…GH-28063)

This was missed while upgrading CI..
(cherry picked from commit d6cb5dd)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>

Co-authored-by: Łukasz Langa <lukasz@langa.pl>

) (GH-28059)

(cherry picked from commit 94b2639)

Co-authored-by: Ned Deily <nad@python.org>

…aries when built on older macOS systems (GH-27251) (GH-28054)

Previously, when built on older macOS systems, `find_library` was not able to find macOS system libraries when running on Big Sur due to changes in how system libraries are stored.
(cherry picked from commit 71853a7)

Co-authored-by: Tobias Bergkvist <tobias@bergkv.ist>

…-28009) (GH-28041)

(cherry picked from commit d3bdbbf)

Co-authored-by: Steve Dower <steve.dower@python.org>

…8036)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
(cherry picked from commit 0897253)

Co-authored-by: Miguel Brito <5544985+miguendes@users.noreply.github.com>

Update the vendored copy of libexpat to 2.4.1 (from 2.2.8) to get the
fix for the CVE-2013-0340 "Billion Laughs" vulnerability. This copy
is most used on Windows and macOS.

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
(cherry picked from commit 3fc5d84)

Co-authored-by: Victor Stinner <vstinner@python.org>

…p in pydoc (GH-23200) (GH-28026)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
(cherry picked from commit c9227df)

Co-authored-by: E-Paine <63801254+E-Paine@users.noreply.github.com>

…) (GH-27999)

(cherry picked from commit 28db1f6)

Co-authored-by: Adam Dangoor <adamdangoor@gmail.com>

… (GH-27996)

Authored-by: Ronald Oussoren <ronaldoussoren@mac.com>
(cherry picked from commit 2ec9428)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>

GH-27946) (GH-27974)

Various date parsing utilities in the email module, such as
email.utils.parsedate(), are supposed to gracefully handle invalid
input, typically by raising an appropriate exception or by returning
None.

The internal email._parseaddr._parsedate_tz() helper used by some of
these date parsing routines tries to be robust against malformed input,
but unfortunately it can still crash ungracefully when a non-empty but
whitespace-only input is passed. This manifests as an unexpected
IndexError.

In practice, this can happen when parsing an email with only a newline
inside a ‘Date:’ header, which unfortunately happens occasionally in the
real world.

Here's a minimal example:

    $ python
    Python 3.9.6 (default, Jun 30 2021, 10:22:16)
    [GCC 11.1.0] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import email.utils
    >>> email.utils.parsedate('foo')
    >>> email.utils.parsedate(' ')
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "/usr/lib/python3.9/email/_parseaddr.py", line 176, in parsedate
        t = parsedate_tz(data)
      File "/usr/lib/python3.9/email/_parseaddr.py", line 50, in parsedate_tz
        res = _parsedate_tz(data)
      File "/usr/lib/python3.9/email/_parseaddr.py", line 72, in _parsedate_tz
        if data[0].endswith(',') or data[0].lower() in _daynames:
    IndexError: list index out of range

The fix is rather straight-forward: guard against empty lists, after
splitting on whitespace, but before accessing the first element.
(cherry picked from commit 989f6a3)

Co-authored-by: wouter bolsterlee <wouter@bolsterl.ee>

GH-27825)

…ted (GH-25099) (GH-27801)

Reverts commit e653d4d and makes
parsing even more strict. Like socket.inet_pton() any leading zero
is now treated as invalid input.

Signed-off-by: Christian Heimes <christian@python.org>

Co-authored-by: Łukasz Langa <lukasz@langa.pl>

bpo-33930: Fix typo in the test name. (GH-27733)
(cherry picked from commit f08e6d1)

Co-authored-by: Benjamin Peterson <benjamin@python.org>

Co-authored-by: Benjamin Peterson <benjamin@python.org>

…d objects (GH-27678) (GH-27721)

(cherry picked from commit bfc2d5a)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>

…H-27638) (GH-27713)

(cherry picked from commit c0ab59f)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>

…nd __build_class__ (GH-27647) (GH-27652)

(cherry picked from commit a40675c)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>

(cherry picked from commit 2ff5bb4)

Co-authored-by: Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com>

…) (#27276)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
(cherry picked from commit 64f54b7)

Co-authored-by: andrei kulakov <andrei.avk@gmail.com>

It wasn't actually detecting the regression due to the assertion being too lenient.
(cherry picked from commit e60ab84)

Co-authored-by: Gregory P. Smith <greg@krypto.org>

…26277)

…GH-26895)

(cherry picked from commit b5a52ee)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>

…est suite (GH-26542) (GH-26670)

(cherry picked from commit f171877)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

…thlib.Path object (GH-25964). (GH-26056)

(cherry picked from commit e9d7f88)

Co-authored-by: Miguel Brito <5544985+miguendes@users.noreply.github.com>

…for extension modules (GH-26025) (#26028)

The address tuple for CAN_RAW no longer returns the address family
after the introduction of CAN ISO-TP support in a30f6d4. However,
updating test_socket.CANTest.testSendFrame was missed as part of the
change, so the test incorrectly attempts to index past the last tuple
item to retrieve the address family.

This removes the now-redundant check for equality against socket.AF_CAN,
as the tuple will not contain the address family.
(cherry picked from commit 355bae8)

Co-authored-by: karl ding <karlding@users.noreply.github.com>