Daniel Hahler [Fri, 15 Feb 2019 20:52:53 +0000 (21:52 +0100)]
bpo-35931: Gracefully handle SyntaxError in pdb debug command (GH-11782)
Previously, `debug print(` would cause the interpreter to exit on a SyntaxError whereas `print(` would properly display the error and return to the pdb prompt.
This patch fixes this by pre-compiling the code before passing it to `Pdb.run`.
Jack Wilsdon [Fri, 15 Feb 2019 19:20:28 +0000 (19:20 +0000)]
Fix the versionadded info for typing.NoReturn (GH-11880)
The earliest version that `typing.NoReturn` appears in is [3.5.4rc1](https://docs.python.org/3/whatsnew/changelog.html#python-3-5-4-release-candidate-1)
Michael Felt [Thu, 14 Feb 2019 18:22:35 +0000 (19:22 +0100)]
bpo-35633: test_lockf() fails with "PermissionError: [Errno 13] Permission denied" on AIX (GH-11424)
[bpo-35633](https://bugs.python.org/issue35633): Fix a test regression introduced with [bpo-35189](https://bugs.python.org/issue35189) (PEP 475: fnctl functions are not retried if interrupted (EINTR)).
Not only a blocking IO error needs to be ignored - permission errors also need to be ignored.
p.s. - iirc as a "test" only correction a NEWS item is not required. If this is not correct - just mention, and I'll add a NEWS blurb.
Paul Monson [Thu, 14 Feb 2019 16:31:30 +0000 (08:31 -0800)]
bpo-35976: Enable Windows projects to build with platform ARM32 (GH-11825)
This change adds the necessary items to the build projects to avoid erroring out right at the start. It does not add _support_ for targeting Windows on ARM32, but is a necessary prerequisite for adding it.
Victor Stinner [Wed, 13 Feb 2019 11:31:56 +0000 (12:31 +0100)]
bpo-35961: Fix a crash in slice_richcompare() (GH-11830)
Fix a crash in slice_richcompare(): use strong references rather than
stolen references for the two temporary internal tuples.
The crash (or assertion error) occurred if a garbage collection
occurred during slice_richcompare(), especially while calling
PyObject_RichCompare(t1, t2, op).
1. Use a _strong_ reference between the Pool and associated iterators
2. Rework PR #8450 to eliminate a cycle in the Pool.
There is no test in this commit because any test that automatically tests this behaviour needs to eliminate the pool before joining the pool to check that the pool object is garbaged collected/does not hang. But doing this will potentially leak threads and processes (see https://bugs.python.org/issue35413).
bpo-35903: Use autoconfig to probe for shm_open() and shm_unlink(). (#11765)
Use autoconfig to probe for shm_open() and shm_unlink(). Set SHM_NEEDS_LIBRT if we must
link with librt to get the shm_* functions. Change setup.py to use the autoconfig defines. These
changes should make it more likely that _multiprocessing/posixshmem.c gets built correctly on
different platforms.
Nina Zakharenko [Tue, 5 Feb 2019 00:56:26 +0000 (16:56 -0800)]
bpo-35321: Set the spec origin to frozen in frozen modules (#11732)
* bpo-35321: Set the spec origin to frozen in frozen modules
This fix correctly sets the spec origin to
"frozen" for the _frozen_importlib module. Note that the
origin was already correctly set in _frozen_importlib_external.
Paul Ganssle [Mon, 4 Feb 2019 19:42:04 +0000 (14:42 -0500)]
bpo-32417: Make timedelta arithmetic respect subclasses (#10902)
* Make timedelta return subclass types
Previously timedelta would always return the `date` and `datetime`
types, regardless of what it is added to. This makes it return
an object of the type it was added to.
* Add tests for timedelta arithmetic on subclasses
* Make pure python timedelta return subclass types
Minmin Gong [Sun, 3 Feb 2019 04:26:55 +0000 (20:26 -0800)]
bpo-35890 : Fix some API calling consistency (GH-11742)
Unicode version of Windows APIs are used in places, but not for GetVersionEx in Python/sysmodule.c
The wcstok_s is called on Windows in Modules/main.c and PC/launcher.c, but not in Python/pathconfig.c
Tony Roberts [Sat, 2 Feb 2019 17:16:42 +0000 (18:16 +0100)]
bpo-33895: Relase GIL while calling functions that acquire Windows loader lock (GH-7789)
LoadLibrary, GetProcAddress, FreeLibrary and GetModuleHandle acquire the system loader lock. Calling these while holding the GIL will cause a deadlock on the rare occasion that another thread is detaching and needs to destroy its thread state at the same time.
Giampaolo Rodola [Tue, 29 Jan 2019 21:14:24 +0000 (22:14 +0100)]
subprocess: close pipes/fds by using ExitStack (GH-11686)
Close pipes/fds in subprocess by using ExitStack.
"In case of premature failure on X.Close() or os.close(X) the remaining pipes/fds will remain "open". Perhaps it makes sense to use contextlib.ExitStack."
- Rationale: https://github.com/python/cpython/pull/11575#discussion_r250288394
Nick Coghlan [Sun, 27 Jan 2019 16:21:11 +0000 (02:21 +1000)]
Clarify U-mode deprecation in open() (GH-11646)
The previous wording could be read as saying that universal
newlines mode itself was deprecated, when it's only the 'U'
character in the mode field that should be avoided.
The update also moves the description of the 'U' mode character
out of the mode table, as the longer explanation was overly
intrusive as a table entry and overshadowed the actually useful
mode characters.