delta/cpython-git.git/Modules, branch v3.8.7

bpo-42375: subprocess DragonFlyBSD build update. (GH-23320) (GH-23389)

2020-12-17T11:16:00+00:00

Same as FreeBSD, file descriptors in /dev/fd id from 0 to 63.
(cherry picked from commit 13b865f0e17c88b081c23f7f05cf91166d220a50)

Co-authored-by: David CARLIER 

Co-authored-by: David CARLIER

bpo-42536: GC track recycled tuples (GH-23623) (GH-23652)

2020-12-07T20:08:24+00:00

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 226a012d1cd61f42ecd3056c554922f359a1a35d)

bpo-40791: Make compare_digest more constant-time. (GH-20444)

2020-11-21T09:12:21+00:00

* 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 31729366e2bc09632e78f3896dbce0ae64914f28)

Co-authored-by: Devin Jeanpierre

bpo-41686: Always create the SIGINT event on Windows (GH-23344) (GH-23347) (GH-23349)

2020-11-17T21:23:18+00:00

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 05a5d697f4f097f37c5c1e2ed0e2338a33c3fb6a)

[3.8] bpo-42237: Fix os.sendfile() on illumos (GH-23154). (GH-23246)

2020-11-12T12:23:48+00:00

(cherry picked from commit fd4ed57674c675e05bd5d577dd5047a333c76c78)

Co-authored-by: Jakub Stasiak

[3.8] bpo-35455: Fix thread_time for Solaris OS (GH-11118). (GH-23145)

2020-11-04T14:19:17+00:00

(cherry picked from commit 9568622c9983b682b2a2a7bacfd3c341028ea099)

Co-authored-by: Jakub Kulík

bpo-41662: Fix bugs in binding parameters in sqlite3 (GH-21998)

2020-10-26T05:46:10+00:00

* 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 0b419b791077414bbc011a412698ebb362b63761)

Co-authored-by: Serhiy Storchaka

bpo-42144: Add a missing "goto error;" in the _ssl module (GH-22959)

2020-10-25T18:21:35+00:00

(cherry picked from commit c32f2976b8f4034724c3270397aa16f38daf470f)

Co-authored-by: Zackery Spytz

bpo-38324: Fix test__locale.py Windows failures (GH-20529)

2020-10-20T11:58:06+00:00

Use wide-char _W_* fields of lconv structure on Windows
Remove "ps_AF" from test__locale.known_numerics on Windows
(cherry picked from commit f2312037e3a974d26ed3e23884f94c6af111a27a)

Co-authored-by: TIGirardi

bpo-16396: Allow wintypes to be imported on non-Windows systems. (GH-21394)

2020-10-19T22:29:37+00:00

Co-authored-by: Christian Heimes 
(cherry picked from commit 5456e78f4593edc277ab72fb9a9db1ebae7d4c2d)

Co-authored-by: Jason R. Coombs