python / cpython

https://bugzilla.redhat.com/show_bug.cgi?id=1866884 is fixed in gdb
10.1 (failed to reproduce on gdb-10.1-1.fc34.aarch64).
(cherry picked from commit 0663940)

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

Fix test_asyncio.test_call_later() race condition: don't measure
asyncio performance in the call_later() unit test. The test failed
randomly on the CI.
(cherry picked from commit 7e5e13d)

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

GH-23612)

(cherry picked from commit f3c3ea9)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

(cherry picked from commit 1867b46)

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

Bumps [actions/cache](https://github.com/actions/cache) from v2.1.2 to v2.1.3.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.2...0781355)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
(cherry picked from commit a43fea8)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

…3583)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from v2.2.0 to v2.2.1.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2.2.0...726a6dc)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
(cherry picked from commit 8acd0e0)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

(cherry picked from commit 80a429e)

Co-authored-by: Andre Delfino <adelfino@gmail.com>

…H-23531)

(cherry picked from commit 427613f)

Co-authored-by: Irit Katriel <iritkatriel@yahoo.com>

…GH-23570)

restart_subprocess is a method of self, the pyshell.InteractiveInterpreter instance. The latter does not have an interp attribute redundantly referring to itself. (The PyShell instance does have an interp attribute, referring to the InteractiveInterpreter instance.)
(cherry picked from commit e41bfd1)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

Instead of using wait_visibility() which waits event <VisibilityNotify> in dead loop
use update() which should proceed all queued events.
(cherry picked from commit 6cc2c41)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

…ances (GH-23558)

* bpo-42406: Fix whichmodule() with multiprocessing

Signed-off-by: Renato L. de F. Cunha <renatoc@br.ibm.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
(cherry picked from commit 8668431)

Co-authored-by: Renato Cunha <renatocunha@acm.org>

…GH-23537) (GH-23551)

* Improve description of 'e', 'f' and 'g' presentation types

* Drop the 'E' from Scientific 'E' notation; remove >= 0 qualifications

* Fix false statement that the alternate form is valid for Decimal

* Nitpick: remove the Harvard/Oxford comma

* Add note that the decimal point is also removed if no digits follow it, except in alternate form
(cherry picked from commit c642374)

Co-authored-by: Mark Dickinson <mdickinson@enthought.com>

Co-authored-by: Mark Dickinson <mdickinson@enthought.com>

(cherry picked from commit 4b44472)

Co-authored-by: Andre Delfino <adelfino@gmail.com>

(cherry picked from commit d41ec65)

Co-authored-by: Zackery Spytz <zspytz@gmail.com>

GH-21925) (#23540)

Co-Authored-By: Tyler Bell <mrbell321@gmail.com>
(cherry picked from commit 8085f74)
Co-authored-by: Zackery Spytz <zspytz@gmail.com>

Co-authored-by: Inada Naoki <songofacandy@gmail.com>
(cherry picked from commit c8aaf71)

Co-authored-by: Volker-Weissmann <39418860+Volker-Weissmann@users.noreply.github.com>

Restore fix from 011525e.
(cherry picked from commit 4fedd71)

Co-authored-by: Julien Palard <julien@palard.fr>

…3491)

(cherry picked from commit b0b4285)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

…H-23042)

See https: //github.com/python/core-workflow/issues/380

Signed-off-by: Filipe Laíns <lains@archlinux.org>
(cherry picked from commit d20b7ed)

Co-authored-by: Filipe Laíns <lains@archlinux.org>

The function accepts now the representation of the default state as
empty sequence (as returned by Style.map()).
The structure of the result is now the same on all platform
and does not depend on the value of wantobjects.
(cherry picked from commit dd844a2)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

(cherry picked from commit 5ef53a8)

Co-authored-by: John Belmonte <john@neggie.net>

Removing 'evaluate' makes it more consistent with other assertX entries.
(cherry picked from commit bd8c22e)

Co-authored-by: Ram Rachum <ram@rachum.com>

…GH-23447)

(cherry picked from commit 453bc1d)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

…22910)

As [bpo-38443]() says the error message from configure when specifying --enable-universalsdk with a set of architectures that is not supported by the compiler is not very helpful.   This PR explicitly checks if the compiler works and bails out if it doesn't.
(cherry picked from commit 0f20bd9)

Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>

I believe this is a mistake. SIGCHLD is only available on Unix systems, not Windows.
(cherry picked from commit 4c24b08)

Co-authored-by: Zhang Maiyun <myzhang1029@hotmail.com>

Co-authored-by: Zhang Maiyun <myzhang1029@hotmail.com>

…eAndSpec() (GH-23410)

* There were leaks if Py_tp_bases is used more than once or if some call is
  failed before setting tp_bases.
* There was a crash if the bases argument or the Py_tp_bases slot is not a tuple.
* The documentation was not accurate.
(cherry picked from commit 1db7639)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

* 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 3172936)

Co-authored-by: Devin Jeanpierre <jeanpierreda@google.com>

(cherry picked from commit 6edf06b)

Co-authored-by: ArioA <ArioA@users.noreply.github.com>

Inspect.getdoc(ob) sometimes gets docstrings when ob.__doc__ is None.
(cherry picked from commit 7ddbaa7)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

…failure or error of the test. (GH-22740) (GH-22782)

(cherry picked from commit fa87482)


Co-authored-by: Irit Katriel <iritkatriel@yahoo.com>

Fix a race condition in "make regen-all" when make -jN option is used
to run jobs in parallel. The clinic.py script now only use atomic
write to write files. Moveover, generated files are now left
unchanged if the content does not change, to not change the file
modification time.

The "make regen-all" command runs "make clinic" and "make
regen-importlib" targets:

* "make regen-importlib" builds object files (ex: Modules/_weakref.o)
  from source files (ex: Modules/_weakref.c) and clinic files (ex:
  Modules/clinic/_weakref.c.h)
* "make clinic" always rewrites all clinic files
  (ex: Modules/clinic/_weakref.c.h)

Since there is no dependency between "clinic" and "regen-importlib"
Makefile targets, these two targets can be run in parallel. Moreover,
half of clinic.py file writes are not atomic and so there is a race
condition when "make regen-all" runs jobs in parallel using make -jN
option (which can be passed in MAKEFLAGS environment variable).

Fix clinic.py to make all file writes atomic:

* Add write_file() function to ensure that all file writes are
  atomic: write into a temporary file and then use os.replace().
* Moreover, write_file() doesn't recreate or modify the file if the
  content does not change to avoid modifying the file modification
  file.
* Update test_clinic to verify these assertions with a functional
  test.
* Remove Clinic.force attribute which was no longer used, whereas
  Clinic.verify remains useful.

(cherry picked from commit 8fba952)
(cherry picked from commit c53c3f4)

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

skip test_min_max_version_mismatch when TLS 1.0 is not available

Signed-off-by: Christian Heimes <christian@python.org>
(cherry picked from commit ce04e71)

Co-authored-by: Christian Heimes <christian@python.org>

…3347) (GH-23349)

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)).

(cherry picked from commit 05a5d69)