Several built-in and standard library types now ensure that their internal result tuples are always tracked by the garbage collector:
- collections.OrderedDict.items
- dict.items
- enumerate
- functools.reduce
- itertools.combinations
- itertools.combinations_with_replacement
- itertools.permutations
- itertools.product
- itertools.zip_longest
- zip
Previously, they could have become untracked by a prior garbage collection.
(cherry picked from commit 226a012d1c)
* [3.9] bpo-41100: Support macOS 11 and Apple Silicon (GH-22855)
Co-authored-by: Lawrence D’Anna <lawrence_danna@apple.com>
* Add support for macOS 11 and Apple Silicon (aka arm64)
As a side effect of this work use the system copy of libffi on macOS, and remove the vendored copy
* Support building on recent versions of macOS while deploying to older versions
This allows building installers on macOS 11 while still supporting macOS 10.9..
(cherry picked from commit 41761933c1)
Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>
* Back port of changes to _decimal to support arm64
* temp_dir is in test.support in 3.9
* bpo-40791: Make compare_digest more constant-time.
The existing volatile `left`/`right` pointers guarantee that the reads will all occur, but does not guarantee that they will be _used_. So a compiler can still short-circuit the loop, saving e.g. the overhead of doing the xors and especially the overhead of the data dependency between `result` and the reads. That would change performance depending on where the first unequal byte occurs. This change removes that optimization.
(This is change GH-1 from https://bugs.python.org/issue40791 .)
(cherry picked from commit 31729366e2)
Co-authored-by: Devin Jeanpierre <jeanpierreda@google.com>
bpo-41686, bpo-41713: On Windows, the SIGINT event,
_PyOS_SigintEvent(), is now created even if Python is configured to
not install signal handlers (PyConfig.install_signal_handlers=0 or
Py_InitializeEx(0)).
Fix memory leak in subprocess.Popen() in case of uid/gid overflow
Also add a test that would catch this leak with `--huntrleaks`.
Alas, the test for `extra_groups` also exposes an inconsistency
in our error reporting: we use a custom ValueError for `extra_groups`,
but propagate OverflowError for `user` and `group`.
(cherry picked from commit c0590c0033)
Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru>
Automerge-Triggered-By: GH:gpshead
Use wide-char _W_* fields of lconv structure on Windows
Remove "ps_AF" from test__locale.known_numerics on Windows
(cherry picked from commit f2312037e3)
Co-authored-by: TIGirardi <tiagoigirardi@gmail.com>
Fix a null pointer dereference in tracemalloc_copy_trace()
of _tracemalloc.
(cherry picked from commit 66c28f50c7)
Co-authored-by: Yunlongs <lylgood@foxmail.com>
* When the parameters argument is a list, correctly handle the case
of changing it during iteration.
* When the parameters argument is a custom sequence, no longer
override an exception raised in ``__len__()``.
(cherry picked from commit 0b419b7910)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
I just realized that my recent PR with sendfile on Solaris ([PR 22040](https://github.com/python/cpython/pull/22040)) has broken error handling.
Sorry for that, this simple followup fixes that.
Automerge-Triggered-By: @1st1
(cherry picked from commit fa8c9e7010)
Co-authored-by: Jakub Kulík <Kulikjak@gmail.com>
* Fix refleak in C module __init_subclass__
This was leaking a reference to the weak cache dictionary for every
ZoneInfo subclass created.
* Fix refleak in ZoneInfo subclass's clear_cache
The previous version of the code accidentally cleared the global
ZONEINFO_STRONG_CACHE variable (and inducing `ZoneInfo` to create a new
strong cache) on calls to a subclass's `clear_cache()`. This would not
affect guaranteed behavior, but it's still not the right thing to do
(and it caused reference leaks).
(cherry picked from commit c3dd7e45cc)
Co-authored-by: Paul Ganssle <paul@ganssle.io>
This applies to the default "extc99" mode. Python does not compile with "stdc99".
(cherry picked from commit 40e700ad04)
Authored-by: Stefan Krah <skrah@bytereef.org>
[bpo-31122](): ssl.wrap_socket() now raises ssl.SSLEOFError rather than OSError when peer closes connection during TLS negotiation
Reproducer: http://tiny.cc/f4ztnz (tiny url because some bot keeps renaming b.p.o.-nnn as bpo links)
(cherry picked from commit 495bd03566)
Co-authored-by: Dima Tisnek <dimaqq@gmail.com>
Prior to this change, attempting to subclass the C implementation of
zoneinfo.ZoneInfo gave the following error:
TypeError: unbound method ZoneInfo.__init_subclass__() needs an argument
https://bugs.python.org/issue41025
(cherry picked from commit 87d8287865)
Co-authored-by: Paul Ganssle <paul@ganssle.io>
Do not call PyObject_CallMethod() with a live exception (like
KeyboardInterrupt).
(cherry picked from commit eca2549f5a)
Co-authored-by: Zackery Spytz <zspytz@gmail.com>
Move definition of UNUSED from modified headers of libmpdec to
_decimal.c itself. This makes the vendored source closer to the
standalone library and fixes build with --with-system-libmpdec.
Tested to build fine with either system libmpdec or the vendored one.
(cherry picked from commit 015efdbef7)
Co-authored-by: Felix Yan <felixonmars@archlinux.org>
The running loop holder cache variable was always set to NULL when
calling set_running_loop.
Now set_running_loop saves the newly created running loop holder in the
cache variable for faster access in get_running_loop.
Automerge-Triggered-By: @1st1
(cherry picked from commit 529f42645d)
Co-authored-by: Tony Solomonik <tony.solomonik@gmail.com>
Also enables using debug build of `python3_d.dll`
Reference: CVE-2020-15523
(cherry picked from commit dcbaa1b49c)
Co-authored-by: Steve Dower <steve.dower@python.org>
PyUnicode_EncodeDecimal and PyUnicode_TransformDecimalToASCII
are deprecated since Python 3.3.
But Py_DEPRECATED(3.3) was commented out.
(cherry picked from commit 13c90e82b6)
Co-authored-by: Inada Naoki <songofacandy@gmail.com>
tracemalloc_get_frame() checked filename == NULL two times in a row.
Signed-off-by: Christian Heimes <christian@python.org>
(cherry picked from commit 9cfcdb7d6e)
Co-authored-by: Christian Heimes <christian@python.org>
This was detected by our Coverity scan as a REVERSE_INULL issue.
Automerge-Triggered-By: @gpshead
(cherry picked from commit d780fa7)
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Fix integer overflow in the :meth:`array.array.index` method on 64-bit Windows
for index larger than ``2**31``.
(cherry picked from commit 1d3dad5f96)
Co-authored-by: WildCard65 <WildCard65@users.noreply.github.com>
Unexpected errors in calling the __iter__ method are no longer
masked by TypeError in csv.reader(), csv.writer.writerow() and
csv.writer.writerows().
(cherry picked from commit c88239f864)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Brandt Bucher
Miss Islington (bot)
Ronald Oussoren
Victor Stinner
Serhiy Storchaka
Łukasz Langa
Guido van Rossum
Paul Ganssle
Anthony Sottile
Dong-hee Na