Misc/NEWS.d/3.10.8.rst - platform/external/python/cpython3 - Git at Google

 .. date: 2022-09-28-17-09-37
 .. gh-issue: 97616
 .. nonce: K1e3Xs
 .. release date: 2022-10-11
 .. section: Security

 Fix multiplying a list by an integer (``list *= int``): detect the integer
 overflow when the new allocated length is close to the maximum size. Issue
 reported by Jordan Limor.  Patch by Victor Stinner.

 ..

 .. date: 2022-09-28-12-10-57
 .. gh-issue: 97612
 .. nonce: y6NvOQ
 .. section: Security

 Fix a shell code injection vulnerability in the
 ``get-remote-certificate.py`` example script. The script no longer uses a
 shell to run ``openssl`` commands. Issue reported and initial fix by Caleb
 Shortt. Patch by Victor Stinner.

 ..

 .. date: 2022-04-27-18-25-30
 .. gh-issue: 68966
 .. nonce: gjS8zs
 .. section: Security

 The deprecated mailcap module now refuses to inject unsafe text (filenames,
 MIME types, parameters) into shell commands. Instead of using such text, it
 will warn and act as if a match was not found (or for test commands, as if
 the test failed).

 ..

 .. date: 2022-10-06-15-45-57
 .. gh-issue: 96078
 .. nonce: fS-6mU
 .. section: Core and Builtins

 :func:`os.sched_yield` now release the GIL while calling sched_yield(2).
 Patch by Dong-hee Na.

 ..

 .. date: 2022-10-05-17-02-22
 .. gh-issue: 97943
 .. nonce: LYAWlE
 .. section: Core and Builtins

 Bugfix: :func:`PyFunction_GetAnnotations` should return a borrowed
 reference. It was returning a new reference.

 ..

 .. date: 2022-10-01-08-55-09
 .. gh-issue: 97591
 .. nonce: pw6kkH
 .. section: Core and Builtins

 Fixed a missing incref/decref pair in `Exception.__setstate__()`. Patch by
 Ofey Chan.

 ..

 .. date: 2022-09-21-14-38-31
 .. gh-issue: 96848
 .. nonce: WuoLzU
 .. section: Core and Builtins

 Fix command line parsing: reject :option:`-X int_max_str_digits <-X>` option
 with no value (invalid) when the :envvar:`PYTHONINTMAXSTRDIGITS` environment
 variable is set to a valid limit. Patch by Victor Stinner.

 ..

 .. date: 2022-09-20-11-06-45
 .. gh-issue: 95921
 .. nonce: dkcRQn
 .. section: Core and Builtins

 Fix overly-broad source position information for chained comparisons used as
 branching conditions.

 ..

 .. date: 2022-09-18-08-47-40
 .. gh-issue: 96821
 .. nonce: Co2iOq
 .. section: Core and Builtins

 Fix undefined behaviour in ``_testcapimodule.c``.

 ..

 .. date: 2022-09-16-19-02-40
 .. gh-issue: 95778
 .. nonce: cJmnst
 .. section: Core and Builtins

 When :exc:`ValueError` is raised if an integer is larger than the limit,
 mention the :func:`sys.set_int_max_str_digits` function in the error
 message. Patch by Victor Stinner.

 ..

 .. date: 2022-09-16-16-54-35
 .. gh-issue: 96387
 .. nonce: GRzewg
 .. section: Core and Builtins

 At Python exit, sometimes a thread holding the GIL can wait forever for a
 thread (usually a daemon thread) which requested to drop the GIL, whereas
 the thread already exited. To fix the race condition, the thread which
 requested the GIL drop now resets its request before exiting. Issue
 discovered and analyzed by Mingliang ZHAO. Patch by Victor Stinner.

 ..

 .. date: 2022-09-16-12-36-13
 .. gh-issue: 96864
 .. nonce: PLU3i8
 .. section: Core and Builtins

 Fix a possible assertion failure, fatal error, or :exc:`SystemError` if a
 line tracing event raises an exception while opcode tracing is enabled.

 ..

 .. date: 2022-09-13-12-06-46
 .. gh-issue: 96678
 .. nonce: NqGFyb
 .. section: Core and Builtins

 Fix undefined behaviour in C code of null pointer arithmetic.

 ..

 .. date: 2022-09-07-13-38-37
 .. gh-issue: 96641
 .. nonce: wky0Fc
 .. section: Core and Builtins

 Do not expose ``KeyWrapper`` in :mod:`_functools`.

 ..

 .. date: 2022-09-06-16-22-13
 .. gh-issue: 96611
 .. nonce: 14wIX8
 .. section: Core and Builtins

 When loading a file with invalid UTF-8 inside a multi-line string, a correct
 SyntaxError is emitted.

 ..

 .. date: 2022-08-29-13-06-58
 .. gh-issue: 95196
 .. nonce: eGRR4b
 .. section: Core and Builtins

 Disable incorrect pickling of the C implemented classmethod descriptors.

 ..

 .. date: 2022-08-28-10-51-19
 .. gh-issue: 96352
 .. nonce: jTLD2d
 .. section: Core and Builtins

 Fix :exc:`AttributeError` missing ``name`` and ``obj`` attributes in
 :meth:`object.__getattribute__`. Patch by Philip Georgi.

 ..

 .. bpo: 42316
 .. date: 2020-11-15-02-08-43
 .. nonce: LqdkWK
 .. section: Core and Builtins

 Document some places where an assignment expression needs parentheses.

 ..

 .. date: 2022-10-09-12-12-38
 .. gh-issue: 87730
 .. nonce: ClgP3f
 .. section: Library

 Wrap network errors consistently in urllib FTP support, so the test suite
 doesn't fail when a network is available but the public internet is not
 reachable.

 ..

 .. date: 2022-10-04-07-55-19
 .. gh-issue: 97825
 .. nonce: mNdv1l
 .. section: Library

 Fixes :exc:`AttributeError` when :meth:`subprocess.check_output` is used
 with argument ``input=None`` and either of the arguments *encoding* or
 *errors* are used.

 ..

 .. date: 2022-09-30-15-56-20
 .. gh-issue: 96827
 .. nonce: lzy1iw
 .. section: Library

 Avoid spurious tracebacks from :mod:`asyncio` when default executor cleanup
 is delayed until after the event loop is closed (e.g. as the result of a
 keyboard interrupt).

 ..

 .. date: 2022-09-29-23-22-24
 .. gh-issue: 97592
 .. nonce: tpJg_J
 .. section: Library

 Avoid a crash in the C version of
 :meth:`asyncio.Future.remove_done_callback` when an evil argument is passed.

 ..

 .. date: 2022-09-29-08-15-55
 .. gh-issue: 97639
 .. nonce: JSjWYW
 .. section: Library

 Remove ``tokenize.NL`` check from :mod:`tabnanny`.

 ..

 .. date: 2022-09-25-23-24-52
 .. gh-issue: 97545
 .. nonce: HZLSNt
 .. section: Library

 Make Semaphore run faster.

 ..

 .. date: 2022-09-25-20-42-33
 .. gh-issue: 73588
 .. nonce: uVtjEA
 .. section: Library

 Fix generation of the default name of :class:`tkinter.Checkbutton`.
 Previously, checkbuttons in different parent widgets could have the same
 short name and share the same state if arguments "name" and "variable" are
 not specified. Now they are globally unique.

 ..

 .. date: 2022-09-22-14-35-02
 .. gh-issue: 97005
 .. nonce: yf21Q7
 .. section: Library

 Update bundled libexpat to 2.4.9

 ..

 .. date: 2022-09-22-11-50-29
 .. gh-issue: 85760
 .. nonce: DETTPd
 .. section: Library

 Fix race condition in :mod:`asyncio` where
 :meth:`~asyncio.SubprocessProtocol.process_exited` called before the
 :meth:`~asyncio.SubprocessProtocol.pipe_data_received` leading to
 inconsistent output. Patch by Kumar Aditya.

 ..

 .. date: 2022-09-17-13-15-10
 .. gh-issue: 96819
 .. nonce: 6RfqM7
 .. section: Library

 Fixed check in :mod:`multiprocessing.resource_tracker` that guarantees that
 the length of a write to a pipe is not greater than ``PIPE_BUF``.

 ..

 .. date: 2022-09-15-00-37-33
 .. gh-issue: 96741
 .. nonce: 4b6czN
 .. section: Library

 Corrected type annotation for dataclass attribute
 ``pstats.FunctionProfile.ncalls`` to be ``str``.

 ..

 .. date: 2022-09-07-22-49-37
 .. gh-issue: 96652
 .. nonce: YqOKxI
 .. section: Library

 Fix the faulthandler implementation of ``faulthandler.register(signal,
 chain=True)`` if the ``sigaction()`` function is not available: don't call
 the previous signal handler if it's NULL. Patch by Victor Stinner.

 ..

 .. date: 2022-08-29-12-35-28
 .. gh-issue: 96073
 .. nonce: WaGstf
 .. section: Library

 In :mod:`inspect`, fix overeager replacement of "``typing.``" in formatting
 annotations.

 ..

 .. date: 2022-08-27-14-38-49
 .. gh-issue: 90467
 .. nonce: VOOB0p
 .. section: Library

 Fix :class:`asyncio.streams.StreamReaderProtocol` to keep a strong reference
 to the created task, so that it's not garbage collected

 ..

 .. date: 2022-08-20-10-31-01
 .. gh-issue: 96052
 .. nonce: a6FhaD
 .. section: Library

 Fix handling compiler warnings (SyntaxWarning and DeprecationWarning) in
 :func:`codeop.compile_command` when checking for incomplete input.
 Previously it emitted warnings and raised a SyntaxError. Now it always
 returns ``None`` for incomplete input without emitting any warnings.

 ..

 .. date: 2022-07-22-09-09-08
 .. gh-issue: 91212
 .. nonce: 53O8Ab
 .. section: Library

 Fixed flickering of the turtle window when the tracer is turned off. Patch
 by Shin-myoung-serp.

 ..

 .. date: 2022-07-09-08-55-04
 .. gh-issue: 74116
 .. nonce: 0XwYC1
 .. section: Library

 Allow :meth:`asyncio.StreamWriter.drain` to be awaited concurrently by
 multiple tasks. Patch by Kumar Aditya.

 ..

 .. date: 2022-05-25-15-57-39
 .. gh-issue: 90155
 .. nonce: YMstB5
 .. section: Library

 Fix broken :class:`asyncio.Semaphore` when acquire is cancelled.

 ..

 .. date: 2022-05-19-22-34-42
 .. gh-issue: 92986
 .. nonce: e6uKxj
 .. section: Library

 Fix :func:`ast.unparse` when ``ImportFrom.level`` is None

 ..

 .. date: 2022-04-15-11-29-38
 .. gh-issue: 91539
 .. nonce: 7WgVuA
 .. section: Library

 Improve performance of ``urllib.request.getproxies_environment`` when there
 are many environment variables

 ..

 .. date: 2022-10-02-10-58-52
 .. gh-issue: 97741
 .. nonce: 39l023
 .. section: Documentation

 Fix ``!`` in c domain ref target syntax via a ``conf.py`` patch, so it works
 as intended to disable ref target resolution.

 ..

 .. date: 2022-08-12-01-12-52
 .. gh-issue: 95588
 .. nonce: PA0FI7
 .. section: Documentation

 Clarified the conflicting advice given in the :mod:`ast` documentation about
 :func:`ast.literal_eval` being "safe" for use on untrusted input while at
 the same time warning that it can crash the process. The latter statement is
 true and is deemed unfixable without a large amount of work unsuitable for a
 bugfix. So we keep the warning and no longer claim that ``literal_eval`` is
 safe.

 ..

 .. date: 2022-05-20-18-42-10
 .. gh-issue: 93031
 .. nonce: c2RdJe
 .. section: Documentation

 Update tutorial introduction output to use 3.10+ SyntaxError invalid range.

 ..

 .. date: 2022-09-11-14-23-49
 .. gh-issue: 96729
 .. nonce: W4uBWL
 .. section: Build

 Ensure that Windows releases built with ``Tools\msi\buildrelease.bat`` are
 upgradable to and from official Python releases.

 ..

 .. date: 2022-10-02-11-59-23
 .. gh-issue: 97728
 .. nonce: dIdlPE
 .. section: Windows

 Fix possible crashes caused by the use of uninitialized variables when pass
 invalid arguments in :func:`os.system` on Windows and in Windows-specific
 modules (like ``winreg``).

 ..

 .. date: 2022-09-29-23-08-49
 .. gh-issue: 90989
 .. nonce: no89Q2
 .. section: Windows

 Clarify some text in the Windows installer.

 ..

 .. date: 2022-09-07-00-11-33
 .. gh-issue: 96577
 .. nonce: kV4K_1
 .. section: Windows

 Fixes a potential buffer overrun in :mod:`msilib`.

 ..

 .. date: 2022-10-05-15-26-58
 .. gh-issue: 97897
 .. nonce: Rf-C6u
 .. section: macOS

 The macOS 13 SDK includes support for the ``mkfifoat`` and ``mknodat``
 system calls. Using the ``dir_fd`` option with either :func:`os.mkfifo` or
 :func:`os.mknod` could result in a segfault if cpython is built with the
 macOS 13 SDK but run on an earlier version of macOS. Prevent this by adding
 runtime support for detection of these system calls ("weaklinking") as is
 done for other newer syscalls on macOS.
	.. date: 2022-09-28-17-09-37
	.. gh-issue: 97616
	.. nonce: K1e3Xs
	.. release date: 2022-10-11
	.. section: Security

	Fix multiplying a list by an integer (``list *= int``): detect the integer
	overflow when the new allocated length is close to the maximum size. Issue
	reported by Jordan Limor. Patch by Victor Stinner.

	..

	.. date: 2022-09-28-12-10-57
	.. gh-issue: 97612
	.. nonce: y6NvOQ
	.. section: Security

	Fix a shell code injection vulnerability in the
	``get-remote-certificate.py`` example script. The script no longer uses a
	shell to run ``openssl`` commands. Issue reported and initial fix by Caleb
	Shortt. Patch by Victor Stinner.

	..

	.. date: 2022-04-27-18-25-30
	.. gh-issue: 68966
	.. nonce: gjS8zs
	.. section: Security

	The deprecated mailcap module now refuses to inject unsafe text (filenames,
	MIME types, parameters) into shell commands. Instead of using such text, it
	will warn and act as if a match was not found (or for test commands, as if
	the test failed).

	..

	.. date: 2022-10-06-15-45-57
	.. gh-issue: 96078
	.. nonce: fS-6mU
	.. section: Core and Builtins

	:func:`os.sched_yield` now release the GIL while calling sched_yield(2).
	Patch by Dong-hee Na.

	..

	.. date: 2022-10-05-17-02-22
	.. gh-issue: 97943
	.. nonce: LYAWlE
	.. section: Core and Builtins

	Bugfix: :func:`PyFunction_GetAnnotations` should return a borrowed
	reference. It was returning a new reference.

	..

	.. date: 2022-10-01-08-55-09
	.. gh-issue: 97591
	.. nonce: pw6kkH
	.. section: Core and Builtins

	Fixed a missing incref/decref pair in `Exception.__setstate__()`. Patch by
	Ofey Chan.

	..

	.. date: 2022-09-21-14-38-31
	.. gh-issue: 96848
	.. nonce: WuoLzU
	.. section: Core and Builtins

	Fix command line parsing: reject :option:`-X int_max_str_digits <-X>` option
	with no value (invalid) when the :envvar:`PYTHONINTMAXSTRDIGITS` environment
	variable is set to a valid limit. Patch by Victor Stinner.

	..

	.. date: 2022-09-20-11-06-45
	.. gh-issue: 95921
	.. nonce: dkcRQn
	.. section: Core and Builtins

	Fix overly-broad source position information for chained comparisons used as
	branching conditions.

	..

	.. date: 2022-09-18-08-47-40
	.. gh-issue: 96821
	.. nonce: Co2iOq
	.. section: Core and Builtins

	Fix undefined behaviour in ``_testcapimodule.c``.

	..

	.. date: 2022-09-16-19-02-40
	.. gh-issue: 95778
	.. nonce: cJmnst
	.. section: Core and Builtins

	When :exc:`ValueError` is raised if an integer is larger than the limit,
	mention the :func:`sys.set_int_max_str_digits` function in the error
	message. Patch by Victor Stinner.

	..

	.. date: 2022-09-16-16-54-35
	.. gh-issue: 96387
	.. nonce: GRzewg
	.. section: Core and Builtins

	At Python exit, sometimes a thread holding the GIL can wait forever for a
	thread (usually a daemon thread) which requested to drop the GIL, whereas
	the thread already exited. To fix the race condition, the thread which
	requested the GIL drop now resets its request before exiting. Issue
	discovered and analyzed by Mingliang ZHAO. Patch by Victor Stinner.

	..

	.. date: 2022-09-16-12-36-13
	.. gh-issue: 96864
	.. nonce: PLU3i8
	.. section: Core and Builtins

	Fix a possible assertion failure, fatal error, or :exc:`SystemError` if a
	line tracing event raises an exception while opcode tracing is enabled.

	..

	.. date: 2022-09-13-12-06-46
	.. gh-issue: 96678
	.. nonce: NqGFyb
	.. section: Core and Builtins

	Fix undefined behaviour in C code of null pointer arithmetic.

	..

	.. date: 2022-09-07-13-38-37
	.. gh-issue: 96641
	.. nonce: wky0Fc
	.. section: Core and Builtins

	Do not expose ``KeyWrapper`` in :mod:`_functools`.

	..

	.. date: 2022-09-06-16-22-13
	.. gh-issue: 96611
	.. nonce: 14wIX8
	.. section: Core and Builtins

	When loading a file with invalid UTF-8 inside a multi-line string, a correct
	SyntaxError is emitted.

	..

	.. date: 2022-08-29-13-06-58
	.. gh-issue: 95196
	.. nonce: eGRR4b
	.. section: Core and Builtins

	Disable incorrect pickling of the C implemented classmethod descriptors.

	..

	.. date: 2022-08-28-10-51-19
	.. gh-issue: 96352
	.. nonce: jTLD2d
	.. section: Core and Builtins

	Fix :exc:`AttributeError` missing ``name`` and ``obj`` attributes in
	:meth:`object.__getattribute__`. Patch by Philip Georgi.

	..

	.. bpo: 42316
	.. date: 2020-11-15-02-08-43
	.. nonce: LqdkWK
	.. section: Core and Builtins

	Document some places where an assignment expression needs parentheses.

	..

	.. date: 2022-10-09-12-12-38
	.. gh-issue: 87730
	.. nonce: ClgP3f
	.. section: Library

	Wrap network errors consistently in urllib FTP support, so the test suite
	doesn't fail when a network is available but the public internet is not
	reachable.

	..

	.. date: 2022-10-04-07-55-19
	.. gh-issue: 97825
	.. nonce: mNdv1l
	.. section: Library

	Fixes :exc:`AttributeError` when :meth:`subprocess.check_output` is used
	with argument ``input=None`` and either of the arguments encoding or
	errors are used.

	..

	.. date: 2022-09-30-15-56-20
	.. gh-issue: 96827
	.. nonce: lzy1iw
	.. section: Library

	Avoid spurious tracebacks from :mod:`asyncio` when default executor cleanup
	is delayed until after the event loop is closed (e.g. as the result of a
	keyboard interrupt).

	..

	.. date: 2022-09-29-23-22-24
	.. gh-issue: 97592
	.. nonce: tpJg_J
	.. section: Library

	Avoid a crash in the C version of
	:meth:`asyncio.Future.remove_done_callback` when an evil argument is passed.

	..

	.. date: 2022-09-29-08-15-55
	.. gh-issue: 97639
	.. nonce: JSjWYW
	.. section: Library

	Remove ``tokenize.NL`` check from :mod:`tabnanny`.

	..

	.. date: 2022-09-25-23-24-52
	.. gh-issue: 97545
	.. nonce: HZLSNt
	.. section: Library

	Make Semaphore run faster.

	..

	.. date: 2022-09-25-20-42-33
	.. gh-issue: 73588
	.. nonce: uVtjEA
	.. section: Library

	Fix generation of the default name of :class:`tkinter.Checkbutton`.
	Previously, checkbuttons in different parent widgets could have the same
	short name and share the same state if arguments "name" and "variable" are
	not specified. Now they are globally unique.

	..

	.. date: 2022-09-22-14-35-02
	.. gh-issue: 97005
	.. nonce: yf21Q7
	.. section: Library

	Update bundled libexpat to 2.4.9

	..

	.. date: 2022-09-22-11-50-29
	.. gh-issue: 85760
	.. nonce: DETTPd
	.. section: Library

	Fix race condition in :mod:`asyncio` where
	:meth:`~asyncio.SubprocessProtocol.process_exited` called before the
	:meth:`~asyncio.SubprocessProtocol.pipe_data_received` leading to
	inconsistent output. Patch by Kumar Aditya.

	..

	.. date: 2022-09-17-13-15-10
	.. gh-issue: 96819
	.. nonce: 6RfqM7
	.. section: Library

	Fixed check in :mod:`multiprocessing.resource_tracker` that guarantees that
	the length of a write to a pipe is not greater than ``PIPE_BUF``.

	..

	.. date: 2022-09-15-00-37-33
	.. gh-issue: 96741
	.. nonce: 4b6czN
	.. section: Library

	Corrected type annotation for dataclass attribute
	``pstats.FunctionProfile.ncalls`` to be ``str``.

	..

	.. date: 2022-09-07-22-49-37
	.. gh-issue: 96652
	.. nonce: YqOKxI
	.. section: Library

	Fix the faulthandler implementation of ``faulthandler.register(signal,
	chain=True)`` if the ``sigaction()`` function is not available: don't call
	the previous signal handler if it's NULL. Patch by Victor Stinner.

	..

	.. date: 2022-08-29-12-35-28
	.. gh-issue: 96073
	.. nonce: WaGstf
	.. section: Library

	In :mod:`inspect`, fix overeager replacement of "``typing.``" in formatting
	annotations.

	..

	.. date: 2022-08-27-14-38-49
	.. gh-issue: 90467
	.. nonce: VOOB0p
	.. section: Library

	Fix :class:`asyncio.streams.StreamReaderProtocol` to keep a strong reference
	to the created task, so that it's not garbage collected

	..

	.. date: 2022-08-20-10-31-01
	.. gh-issue: 96052
	.. nonce: a6FhaD
	.. section: Library

	Fix handling compiler warnings (SyntaxWarning and DeprecationWarning) in
	:func:`codeop.compile_command` when checking for incomplete input.
	Previously it emitted warnings and raised a SyntaxError. Now it always
	returns ``None`` for incomplete input without emitting any warnings.

	..

	.. date: 2022-07-22-09-09-08
	.. gh-issue: 91212
	.. nonce: 53O8Ab
	.. section: Library

	Fixed flickering of the turtle window when the tracer is turned off. Patch
	by Shin-myoung-serp.

	..

	.. date: 2022-07-09-08-55-04
	.. gh-issue: 74116
	.. nonce: 0XwYC1
	.. section: Library

	Allow :meth:`asyncio.StreamWriter.drain` to be awaited concurrently by
	multiple tasks. Patch by Kumar Aditya.

	..

	.. date: 2022-05-25-15-57-39
	.. gh-issue: 90155
	.. nonce: YMstB5
	.. section: Library

	Fix broken :class:`asyncio.Semaphore` when acquire is cancelled.

	..

	.. date: 2022-05-19-22-34-42
	.. gh-issue: 92986
	.. nonce: e6uKxj
	.. section: Library

	Fix :func:`ast.unparse` when ``ImportFrom.level`` is None

	..

	.. date: 2022-04-15-11-29-38
	.. gh-issue: 91539
	.. nonce: 7WgVuA
	.. section: Library

	Improve performance of ``urllib.request.getproxies_environment`` when there
	are many environment variables

	..

	.. date: 2022-10-02-10-58-52
	.. gh-issue: 97741
	.. nonce: 39l023
	.. section: Documentation

	Fix ``!`` in c domain ref target syntax via a ``conf.py`` patch, so it works
	as intended to disable ref target resolution.

	..

	.. date: 2022-08-12-01-12-52
	.. gh-issue: 95588
	.. nonce: PA0FI7
	.. section: Documentation

	Clarified the conflicting advice given in the :mod:`ast` documentation about
	:func:`ast.literal_eval` being "safe" for use on untrusted input while at
	the same time warning that it can crash the process. The latter statement is
	true and is deemed unfixable without a large amount of work unsuitable for a
	bugfix. So we keep the warning and no longer claim that ``literal_eval`` is
	safe.

	..

	.. date: 2022-05-20-18-42-10
	.. gh-issue: 93031
	.. nonce: c2RdJe
	.. section: Documentation

	Update tutorial introduction output to use 3.10+ SyntaxError invalid range.

	..

	.. date: 2022-09-11-14-23-49
	.. gh-issue: 96729
	.. nonce: W4uBWL
	.. section: Build

	Ensure that Windows releases built with ``Tools\msi\buildrelease.bat`` are
	upgradable to and from official Python releases.

	..

	.. date: 2022-10-02-11-59-23
	.. gh-issue: 97728
	.. nonce: dIdlPE
	.. section: Windows

	Fix possible crashes caused by the use of uninitialized variables when pass
	invalid arguments in :func:`os.system` on Windows and in Windows-specific
	modules (like ``winreg``).

	..

	.. date: 2022-09-29-23-08-49
	.. gh-issue: 90989
	.. nonce: no89Q2
	.. section: Windows

	Clarify some text in the Windows installer.

	..

	.. date: 2022-09-07-00-11-33
	.. gh-issue: 96577
	.. nonce: kV4K_1
	.. section: Windows

	Fixes a potential buffer overrun in :mod:`msilib`.

	..

	.. date: 2022-10-05-15-26-58
	.. gh-issue: 97897
	.. nonce: Rf-C6u
	.. section: macOS

	The macOS 13 SDK includes support for the ``mkfifoat`` and ``mknodat``
	system calls. Using the ``dir_fd`` option with either :func:`os.mkfifo` or
	:func:`os.mknod` could result in a segfault if cpython is built with the
	macOS 13 SDK but run on an earlier version of macOS. Prevent this by adding
	runtime support for detection of these system calls ("weaklinking") as is
	done for other newer syscalls on macOS.