Adrian Vladu [Thu, 4 Mar 2021 16:59:12 +0000 (18:59 +0200)]
bpo-42405: fix C extensions build on Windows ARM64 (GH-23399)
The following changes are required:
* add a new platform win-arm64
* replace the emulated compiler executable paths
* bump the linker base addressed as ARM64 requires more memory
this change might not be needed (investigation required)
On Windows 10 ARM64, VS compiler paths look like this:
C:\Program Files (x86)\Microsoft Visual
Studio\2019\Community\VC\Tools\MSVC\14.27.29110\bin\HostX86\ARM64\cl.exe
Note that the cl.exe for ARM64 is an x32 binary, which can run emulated
on Windows 10 ARM64 (it has builtin emulation for x32).
The rc.exe and mc.exe paths have to also be changed, as the initial
discovery has to be fixed.
Work in progress to remove the hardcoded bits and to change the path
query fixes to the proper location.
Eric L [Wed, 3 Mar 2021 20:36:22 +0000 (21:36 +0100)]
bpo-40701: tempfile mixes str and bytes in an inconsistent manner (GH-20442)
The case of tempfile.tempdir variable being bytes is now handled consistently.
The getters return the right type and no more error of mixing str and bytes unless explicitly caused by the user.
Adds a regression test.
Expands the documentation to clarify the behavior.
Co-authored-by: Eric L <ewl+git@lavar.de> Co-authored-by: Gregory P. Smith <greg@krypto.org>
Noor Michael [Wed, 3 Mar 2021 16:58:57 +0000 (10:58 -0600)]
bpo-43295: Fix error handling of datetime.strptime format string '%z' (GH-24627)
Previously, `datetime.strptime` would match `'z'` with the format string `'%z'` (for UTC offsets), throwing an `IndexError` by erroneously trying to parse `'z'` as a timestamp. As a special case, `'%z'` matches the string `'Z'` which is equivalent to the offset `'+00:00'`, however this behavior is not defined for lowercase `'z'`.
This change ensures a `ValueError` is thrown when encountering the original example, as follows:
```
>>> from datetime import datetime
>>> datetime.strptime('z', '%z')
ValueError: time data 'z' does not match format '%z'
```
Filipe Laíns [Sun, 28 Feb 2021 22:43:19 +0000 (22:43 +0000)]
bpo-29753: fix merging packed bitfields in ctypes struct/union (GH-19850)
From the commit message:
> When the structure is packed we should always expand when needed,
> otherwise we will add some padding between the fields. This patch makes
> sure we always merge bitfields together. It also changes the field merging
> algorithm so that it handles bitfields correctly.
Dennis Sweeney [Sun, 28 Feb 2021 18:20:50 +0000 (13:20 -0500)]
bpo-41972: Use the two-way algorithm for string searching (GH-22904)
Implement an enhanced variant of Crochemore and Perrin's Two-Way string searching algorithm, which reduces worst-case time from quadratic (the product of the string and pattern lengths) to linear. This applies to forward searches (like``find``, ``index``, ``replace``); the algorithm for reverse searches (like ``rfind``) is not changed.
Ruben Vorderman [Thu, 25 Feb 2021 11:30:24 +0000 (12:30 +0100)]
bpo-43316: gzip: CLI uses non-zero return code on error. (GH-24647)
Exit code is now 1 instead of 0. A message is printed to stderr instead of stdout. This is
the proper behaviour for a tool that can be used in scripts.
Guanzhong Chen [Wed, 24 Feb 2021 18:39:38 +0000 (13:39 -0500)]
bpo-43293: Doc: move note about GIL to top of threading module (GH-24622)
The note about the GIL was buried pretty deep in the threading documentation,
and this made it hard for first time users to discover why their attempts
at using threading to parallelizing their application did not work.
In this commit, the note is moved to the top of the module documention for
visibility.
Terry Jan Reedy [Wed, 24 Feb 2021 00:39:51 +0000 (19:39 -0500)]
bpo-43283: Add IDLE doc paragraph about print speed (GH-24615)
Printing to IDLE's Shell is often slower than printing to a system
terminal, but it can be made faster by pre-formatting a single
string before printing.
* No longer save/restore the current exception. It is no longer used
with an exception raised.
* No longer clear the current exception on error: it's now up to the
caller.
Pablo Galindo [Sat, 20 Feb 2021 18:03:08 +0000 (18:03 +0000)]
bpo-43277: Add PySet_CheckExact to the C-API (GH-24598)
For some mysterious reason we have PySet_Check, PyFrozenSet_Check, PyAnySet_Check, PyAnySet_CheckExact and PyFrozenSet_CheckExact but no PySet_CheckExact.
Victor Stinner [Sat, 20 Feb 2021 14:17:18 +0000 (15:17 +0100)]
bpo-42990: Functions inherit current builtins (GH-24564)
The types.FunctionType constructor now inherits the current builtins
if the globals dictionary has no "__builtins__" key, rather than
using {"None": None} as builtins: same behavior as eval() and exec()
functions.
Defining a function with "def function(...): ..." in Python is not
affected, globals cannot be overriden with this syntax: it also
inherits the current builtins.
PyFrame_New(), PyEval_EvalCode(), PyEval_EvalCodeEx(),
PyFunction_New() and PyFunction_NewWithQualName() now inherits the
current builtins namespace if the globals dictionary has no
"__builtins__" key.
* Add _PyEval_GetBuiltins() function.
* _PyEval_BuiltinsFromGlobals() now uses _PyEval_GetBuiltins() if
builtins cannot be found in globals.
* Add tstate parameter to _PyEval_BuiltinsFromGlobals().
Austin Lamb [Fri, 19 Feb 2021 23:27:01 +0000 (15:27 -0800)]
bpo-42825: Enable /OPT:REF (GH-24098)
We explicitly disable /OPT:ICF as some manual optimisations depend on some functions still having distinct pointers (such as wrap_binary_func and wrap_binary_func_l).
Victor Stinner [Fri, 19 Feb 2021 12:21:51 +0000 (13:21 +0100)]
bpo-40522: Replace PyThreadState_GET() with PyThreadState_Get() (GH-24575)
Use directly the PyThreadState_Get() function in public header files,
since PyThreadState_GET() macro is just an alias to it in pratice in
these files.
Victor Stinner [Fri, 19 Feb 2021 12:21:28 +0000 (13:21 +0100)]
bpo-43268: Replace _PyThreadState_GET() with _PyInterpreterState_GET() (GH-24576)
Replace _PyThreadState_GET() with _PyInterpreterState_GET() in
functions which only need the current interpreter, but don't need the
current Python thread state.
Replace also _PyThreadState_UncheckedGet() with _PyThreadState_GET()
in faulthandler.c, since _PyThreadState_UncheckedGet() is just an
alias to _PyThreadState_GET() in practice.
Jeremy Paige [Thu, 18 Feb 2021 19:43:35 +0000 (11:43 -0800)]
Remove all links to mingw.org (GH-24552)
This lease on this domain has lapsed. This not only makes these dead links, but a potential attack vector for readers of python.org as the domain can be obtained by an untrustworthy party.
I considered redirecting these links to http://mingw-w64.org/ which is a maintained fork of mingw, but beyond my unfamiliarity with the exact level of compatibility, at the time of this PR that site had an expired cert and so is not much of a vulnerability fix.
* Refactor _PyFrame_New_NoTrack() and PyFunction_NewWithQualName()
code.
* PyFrame_New() checks for _PyEval_BuiltinsFromGlobals() failure.
* Fix a ref leak in _PyEval_BuiltinsFromGlobals() error path.
* Complete PyFunction_GetModule() documentation: it returns a
borrowed reference and it can return NULL.
* Move _PyEval_BuiltinsFromGlobals() definition to the internal C
API.
* PyFunction_NewWithQualName() uses _Py_IDENTIFIER() API for the
"__name__" string to make it compatible with subinterpreters.