[C API] Convert a few stdlib extensions to the limited C API (PEP 384) #85283

vstinner · 2020-06-25T08:54:21Z

Discussion: https://discuss.python.org/t/use-the-limited-c-api-for-some-of-our-stdlib-c-extensions/32465

BPO	41111
Nosy	@freddrake, @smontanaro, @rhettinger, @vstinner, @tiran, @encukou, @pmp-p, @ericsnowcurrently, @corona10, @shihai1991
PRs	bpo-41111: Move the Py_LIMITED_API macro of xxlimited module from setup.py to xxlimited.c. #25115 bpo-41111: xxlimited.c defines Py_LIMITED_API #25151 bpo-41111: Build limited C API without Py_TRACE_REFS macro. #25180 gh-85283: Extending Argument Clinic to support to use the limited C API. #26080

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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assignee = None
closed_at = None
created_at = <Date 2020-06-25.08:54:20.867>
labels = ['extension-modules', 'expert-C-API', '3.11']
title = '[C API] Convert a few stdlib extensions to the limited C API (PEP 384)'
updated_at = <Date 2022-02-17.16:21:09.570>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2022-02-17.16:21:09.570>
actor = 'eric.snow'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules', 'C API']
creation = <Date 2020-06-25.08:54:20.867>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 41111
keywords = ['patch']
message_count = 27.0
messages = ['372307', '372309', '372310', '372311', '372315', '372316', '372321', '372324', '372325', '372327', '372332', '372386', '376506', '376507', '380415', '389925', '389959', '390068', '390159', '390161', '390179', '390326', '390333', '390389', '393541', '393635', '393640']
nosy_count = 11.0
nosy_names = ['fdrake', 'skip.montanaro', 'rhettinger', 'gustavo', 'vstinner', 'christian.heimes', 'petr.viktorin', 'pmpp', 'eric.snow', 'corona10', 'shihai1991']
pr_nums = ['25115', '25151', '25180', '26080']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue41111'
versions = ['Python 3.11']

Linked PRs

vstinner · 2020-06-25T08:54:19Z

Python stdlib has around 139 extension modules. Not all of them *need* to use internal C API. I'm interested to try to convert a bunch of them to the limited C API, as part of my work on the PEP-620. IMHO "Eating your own dog food" is a good practice to ensure that the limited C API is usable.

Currently, the stdlib has exactly one extension module using the limited C API: the xxlimited module built with Py_LIMITED_API macro defined as 0x03050000 in setup.py. By the way, maybe Py_LIMITED_API should be defined in xxlimited.c, rather than in setup.py.

xxlimited.c is not built if Python is built in debug mode. I'm not sure why.

The main limitation to use the limited C API for stdlib is Argument Clinic which attempts to always emit the most efficient code, like using the METH_FASTCALL calling convention and use private functions like _PyArg_CheckPositional() or "static _PyArg_Parser _parser".

Argument Clinic could be modified to have an option to only use C API of the limited C API. Cython is working on a similar option (restraint emitted code to the limited C API).

I already tried to convert stdlib extensions to the limited C API in bpo-39573. I found other issues:

PyTypeObject is opaque and so it's not possible to implement a deallocator function (tp_dealloc) which calls tp_free like: Py_TYPE(self)->tp_free((PyObject*)self);
_Py_IDENTIFIER() is not part of the limited C API

https://bugs.python.org/issue39573#msg361514

vstinner · 2020-06-25T08:55:21Z

See also bpo-27499 "PY_SSIZE_T_CLEAN conflicts with Py_LIMITED_API".

vstinner · 2020-06-25T09:00:49Z

Other missing features of the limited C API:

bpo-2897: "PyMemberDef missing in limited API / Deprecate structmember.h"
Stefan Behnel wrote: "Some code cannot even be migrated at all,
e.g. because the entire buffer protocol is missing from it. Some bugs were
only fixed in Py3.9, time will tell if anything else is missing."
https://mail.python.org/archives/list/python-dev@python.org/message/SENQBEJCJ7NYC72ZZ7BGIEDDBTUOXLI4/

vstinner · 2020-06-25T09:09:48Z

PyType_FromSpec() doesn't support 11 slots:

tp_dict
tp_mro
tp_cache
tp_subclasses
tp_weaklist
tp_vectorcall
tp_weaklistoffset (see PyMemberDef)
tp_dictoffset (see PyMemberDef)
tp_vectorcall_offset (see PyMemberDef)
bf_getbuffer
bf_releasebuffer

https://docs.python.org/dev/c-api/type.html#c.PyType_Slot

But it is possible to define tp_weaklistoffset, tp_dictoffset and tp_vectorcall_offset via Py_tp_members slot:
https://docs.python.org/dev/c-api/structures.html#pymemberdef-offsets

"__dictoffset__" => tp_dictoffset
"__weaklistoffset__" => tp_weaklistoffset
"__vectorcalloffset__" => tp_vectorcall_offset

Maybe we can do add new members for the 8 missing slots, especially bf_getbuffer and bf_releasebuffer?

commit f7c4e23 of bpo-40724 added Py_bf_getbuffer and Py_bf_releasebuffer slots to the C API, but these slots are still not available in the limited C API: see bpo-10181.

vstinner · 2020-06-25T09:15:40Z

See also bpo-39123: "PyThread_xxx() not available when using limited API".

vstinner · 2020-06-25T09:17:35Z

See also bpo-23903: "Generate PC/python3.def by scraping headers". Steve Dower suggests to convert macros to functions. I'm not sure which functions are still implemented as macro in the limited C API.

vstinner · 2020-06-25T09:29:33Z

See also bpo-16731: "xxlimited/xxmodule docstrings ambiguous".

vstinner · 2020-06-25T09:32:50Z

See also bpo-41073: "[C API] PyType_GetSlot() should accept static types".

vstinner · 2020-06-25T09:37:43Z

See also ./Tools/scripts/abitype.py script and bpo-10943: "abitype: Need better support to port C extension modules to the stable C API".

vstinner · 2020-06-25T09:38:51Z

See also bpo-40077: "Convert static types to PyType_FromSpec()".

vstinner · 2020-06-25T09:47:41Z

See also bpo-29086: "Document C API that is not part of the limited API".

rhettinger · 2020-06-25T19:22:53Z

While this might make for an interesting validation experiment, I don't think the results should be checked in.

Code churn is to be avoided when there is no visible user benefit. It risks destabilizing code, introducing errors, and making the code less recognizable to the other developers who created and maintained it.

vstinner · 2020-09-07T15:37:15Z

Some related changes in modules: posix, _hashopenssl, _ast (Python-ast.c), zlib, _struct, tkinter, _curses_panel.

commit b396663
Author: Eddie Elizondo <eelizondo@fb.com>
Date: Tue Nov 5 07:16:14 2019 -0800

bpo-35381 Remove all static state from posixmodule (GH-15892)



After bpo-9665, this moves the remaining types in posixmodule to be heap-allocated to make it compatible with PEP-384 as well as modifying all the type accessors to fully make the type opaque.

The original PR that got messed up a rebase: https://github.com/python/cpython/pull/10854. All the issues in that commit have now been addressed since https://github.com/python/cpython/pull/11661 got committed.

This change also removes any state from the data segment and onto the module state itself.


https://bugs.python.org/issue35381



Automerge-Triggered-By: @encukou

commit df69e75
Author: Christian Heimes <christian@python.org>
Date: Wed Sep 25 23:03:30 2019 +0200

bpo-38142: Updated _hashopenssl.c to be PEP-384 compliant (bpo-16071)

* Updated _hashopenssl.c to be PEP-384 compliant
* Remove refleak test from test_hashlib. The updated type no longer accepts random arguments to __init__.

commit ac46eb4
Author: Dino Viehland <dinoviehland@fb.com>
Date: Wed Sep 11 10:16:34 2019 -0700

bpo-38113: Update the Python-ast.c generator to PEP-384 (gh-15957)

Summary: This mostly migrates Python-ast.c to PEP-384 and removes all statics from the whole file. This modifies the generator itself that generates the Python-ast.c. It leaves in the usage of _PyObject_LookupAttr even though it's not fully PEP-384 compatible (this could always be shimmed in by anyone who needs it).

commit a1ffad0
Author: Dino Viehland <dinoviehland@gmail.com>
Date: Tue Sep 10 11:27:03 2019 +0100

bpo-38074: Make zlib extension module PEP-384 compatible (GH-15792)

Updated zlibmodule.c to be PEP-384 compliant.

commit 4f384af
Author: Dino Viehland <dinoviehland@gmail.com>
Date: Tue Sep 10 11:18:37 2019 +0100

bpo-38076: Make struct module PEP-384 compatible (bpo-15805)

* PEP-384 _struct

* More PEP-384 fixes for _struct

Summary: Add a couple of more fixes for `_struct` that were previously missed such as removing `tp_*` accessors and using `PyBytesWriter` instead of calling `PyBytes_FromStringAndSize` with `NULL`. Also added a test to confirm that `iter_unpack` type is still uninstantiable.

* 📜🤖 Added by blurb_it.

commit d2217a8
Author: Andrew Svetlov <andrew.svetlov@gmail.com>
Date: Tue Oct 30 22:49:16 2012 +0200

Issue bpo-15721: apply PEP-384 Refactoring to tkinter module.

commit bc07cb8
Author: Martin v. Löwis <martin@v.loewis.de>
Date: Thu Jun 14 16:01:23 2012 +0200

Issue bpo-14936: curses_panel was converted to PEP-3121 and PEP-384 API.
Patch by Robin Schreiber.

vstinner · 2020-09-07T15:40:09Z

See also bpo-40077: "Convert static types to PyType_FromSpec()".

In bpo-1635741, many extension modules have been ported to the multi-phase initilization API (PEP-489), and many static types have been converted to heap types.

encukou · 2020-11-05T15:31:52Z

Maybe we can do add new members for the 8 missing slots

See: https://bugs.python.org/issue41618?#msg380414

shihai1991 · 2021-03-31T17:28:05Z

By the way, maybe Py_LIMITED_API should be defined in xxlimited.c, rather than in setup.py.

+1. Defining Py_LIMITED_API in xxlimited.c is more direct than in setup.py. so I created the PR-25115.

vstinner · 2021-04-01T07:56:34Z

See also bpo-43688: [C API] Support the limited C API in debug mode (Py_INCREF and Py_DECREF).

vstinner · 2021-04-02T14:48:20Z

New changeset 240bcf8 by Victor Stinner in branch 'master':
bpo-41111: xxlimited.c defines Py_LIMITED_API (GH-25151)
240bcf8

smontanaro · 2021-04-04T00:16:07Z

The latest commit seems to break the build if configured --with-trace-refs.

smontanaro · 2021-04-04T00:22:24Z

I should revise that comment. The xxlimited and xxlimited_35 modules fail to build. That seems suboptimal, but perhaps is to be expected. Perhaps it would be better that compiling them not be attempted with configuring --with-trace-refs?

shihai1991 · 2021-04-04T08:33:46Z

Perhaps it would be better that compiling them not be attempted with configuring --with-trace-refs?

+1. The limited C API can't be build under Py_TRACE_REFS now.

vstinner · 2021-04-06T12:55:32Z

New changeset 5787ba4 by Hai Shi in branch 'master':
bpo-41111: Don't build xxlimited with Py_TRACE_REFS macro (GH-25180)
5787ba4

vstinner · 2021-04-06T13:55:10Z

Skip Montanaro: "The latest commit seems to break the build if configured --with-trace-refs."

Oops, I forgot about this special build mode. Thanks for the reminder Skip, and thanks for the fix Hai ;-)

Skip: By the way, I'm curious, why do you use --with-trace-refs?

smontanaro · 2021-04-07T00:05:28Z

Skip: By the way, I'm curious, why do you use --with-trace-refs?

I'm still horsing around with register opcodes and got in the habit of
building with pydebug and trace refs enabled.

shihai1991 · 2021-05-12T18:16:08Z

The main limitation to use the limited C API for stdlib is Argument Clinic which attempts to always emit the most efficient code, like using the METH_FASTCALL calling convention and use private functions like _PyArg_CheckPositional() or "static _PyArg_Parser _parser".

PR-26080 adds the feature that Argument Clinic to support to use the Limited C API.
METH_FASTCALL is the part of the stable ABI in PR-23009.
Do we need convert METH_VARARGS and METH_KEYWORDS as the part of the stable ABI too(something like METH_FASTCALL)?

Argument Clinic now inlines _PyArg_CheckPositional() for the limited C API. The generated code should be as fast or even a little bit faster.

…116791)

…6841) Argument Clinic now uses the PEP 737 "%T" format to format type name for the limited C API.

…n#116928)

…ython#116927) Argument Clinic now inlines _PyArg_CheckPositional() for the limited C API. The generated code should be as fast or even a little bit faster.

…6611) posixmodule.h: remove check on the limited C API, since these helpers are not part of the public C API.

…116791)

…6841) Argument Clinic now uses the PEP 737 "%T" format to format type name for the limited C API.

…n#116928)

…ython#116927) Argument Clinic now inlines _PyArg_CheckPositional() for the limited C API. The generated code should be as fast or even a little bit faster.

…on#117125)

* Replace PyObject_VectorcallDict() with PyObject_Call() in _call_dialect(). Create a temporary tuple to pass the positional dialect argument. * Use PyUnicode_DecodeUTF32() to create an Unicode string from Py_UCS4 characters. * Replace PyErr_Format("%.200s", Py_TYPE(src)->tp_name) with PyErr_Format("%T", src). * Replace PyUnicode_READ_CHAR() with PyUnicode_ReadChar(). * Replace PyUnicode_READ() with PyUnicode_ReadChar(). join_append_lineterminator() now takes an object (Unicode string) as argument. * Replace PyUnicode_GET_LENGTH() with PyUnicode_GetLength(). * Replace Py_XSETREF() with assignement and Py_XDECREF(). * Replace PyDict_Pop() with PyDict_DelItem(). * Use PyType_GetSlot() to get tp_clear and tp_alloc slots. * Add some casts to (PyObject*). * Add an explicit #include <string.h>.

commit 9dae05ee59eeba0e67af2a46f2a2907c9f8d7e4a Author: Moshe Kaplan <mosheekaplan@gmail.com> Date: Mon Apr 1 15:53:00 2024 -0400 Docs: specify XML document name in xml.etree.elementtree example (#24223) commit fc2071687b708598264a3403b7f9104667c1092f Author: Matthew Davis <7035647+mdavis-xyz@users.noreply.github.com> Date: Mon Apr 1 21:49:14 2024 +0200 Docs: add more links to PIPE in subprocess docs (#25416) commit fc8007ee3635db6ab73e132ebff987c910b6d538 Author: Barney Gale <barney.gale@gmail.com> Date: Mon Apr 1 20:37:41 2024 +0100 GH-117337: Deprecate `glob.glob0()` and `glob.glob1()`. (#117371) These undocumented functions are no longer used by `msilib`, so there's no reason to keep them around. commit c741ad3537193c63fe697a8f0316aecd45eeb9ba Author: Justin Turner Arthur <justinarthur@gmail.com> Date: Mon Apr 1 12:07:29 2024 -0500 gh-77714: Provide an async iterator version of as_completed (GH-22491) * as_completed returns object that is both iterator and async iterator * Existing tests adjusted to test both the old and new style * New test to ensure iterator can be resumed * New test to ensure async iterator yields any passed-in Futures as-is Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Guido van Rossum <gvanrossum@gmail.com> commit ddf814db744006e0f42328aa15ace97c9d8ad681 Author: Guido van Rossum <guido@python.org> Date: Mon Apr 1 09:13:38 2024 -0700 Silence compiler warnings in gc.c (#117422) commit 179869af922252a0c1cef65fd2923856895e7d1b Author: Petr Viktorin <encukou@gmail.com> Date: Mon Apr 1 17:01:22 2024 +0200 gh-94808: Fix refcounting in PyObject_Print tests (GH-117421) commit dd44ab994b7262f0704d64996e0a1bc37b233407 Author: neonene <53406459+neonene@users.noreply.github.com> Date: Mon Apr 1 22:28:14 2024 +0900 gh-117142: ctypes: Unify meta tp slot functions (GH-117143) Integrates the following ctypes meta tp slot functions: * `CDataType_traverse()` into `CType_Type_traverse()`. * `CDataType_clear()` into `CType_Type_clear()`. * `CDataType_dealloc()` into `CType_Type_dealloc()`. * `CDataType_repeat()` into `CType_Type_repeat()`. commit 3de09cadde788065a4f2d45117e789c9353bbd12 Author: Steve (Gadget) Barnes <gadgetsteve@hotmail.com> Date: Mon Apr 1 14:02:07 2024 +0100 gh-91565: Replace bugs.python.org links with Devguide/GitHub ones (GH-91568) Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com> Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net> Co-authored-by: Petr Viktorin <encukou@gmail.com> Co-authored-by: Ezio Melotti <ezio.melotti@gmail.com> commit 90c3c68a658db6951b77a5be50088ec2f6adc8eb Author: MonadChains <monadchains@gmail.com> Date: Mon Apr 1 13:52:25 2024 +0100 gh-94808:Improve coverage of PyObject_Print (GH-98749) commit 348cf6e0078eae156c503e8f61ef5e27ae28e57b Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon Apr 1 11:14:37 2024 +0000 Bump mypy from 1.8.0 to 1.9.0 in /Tools (#117418) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com> commit 9b403fb559bfce93a478937e0ef7e539a9a95283 Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon Apr 1 11:05:14 2024 +0000 build(deps-dev): bump types-psutil from 5.9.5.20240205 to 5.9.5.20240316 in /Tools (#117417) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com> commit 93c7d9d17b571b6a181af7c02830d29819535c35 Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon Apr 1 11:38:38 2024 +0100 build(deps-dev): bump types-setuptools from 69.1.0.20240301 to 69.2.0.20240317 in /Tools (#117419) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> commit 3bb12e407c183946471272f8aee098e54e62a333 Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon Apr 1 09:54:33 2024 +0000 build(deps): bump actions/add-to-project from 0.6.0 to 1.0.0 (#117415) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> commit 56e99307c49adcc6df355f8070229371c97d654f Author: Adorilson Bezerra <adorilson@gmail.com> Date: Sun Mar 31 23:34:54 2024 +0100 Doc: printf-style library/stdtype improvements (#16741) commit 18e12641a61a88f7d08b2114ebe965892c6661c5 Author: Raymond Hettinger <rhettinger@users.noreply.github.com> Date: Sun Mar 31 16:09:22 2024 -0500 gh-117387 Remove hash mark from introductory text (#117409) commit a32d6939486d7f90ee57e215077f6116e19de24d Author: Deborah <32307299+dlwrnc@users.noreply.github.com> Date: Sun Mar 31 22:11:48 2024 +0200 gh-102190: Add additional zipfile `pwd=` arg docstrings (gh-102195) This just documents the parameter that already exists. --------- Co-authored-by: Gregory P. Smith <greg@krypto.org> Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com> commit 262445358e21c56d7c68e3ee76c13e469d2ea348 Author: Shantanu <12621235+hauntsaninja@users.noreply.github.com> Date: Sun Mar 31 12:02:48 2024 -0700 Link to the Python type system specification (#117400) commit 752e18389ed03087b51b38eac9769ef8dfd167b7 Author: Barney Gale <barney.gale@gmail.com> Date: Sun Mar 31 19:14:48 2024 +0100 GH-114575: Rename `PurePath.pathmod` to `PurePath.parser` (#116513) And rename the private base class from `PathModuleBase` to `ParserBase`. commit bfc57d43d8766120ba0c8f3f6d7b2ac681a81d8a Author: Sam Gross <colesbury@gmail.com> Date: Fri Mar 29 18:58:08 2024 -0400 gh-117303: Don't detach in `PyThreadState_DeleteCurrent()` (#117304) This fixes a crash in `test_threading.test_reinit_tls_after_fork()` when running with the GIL disabled. We already properly handle the case where the thread state is `_Py_THREAD_ATTACHED` in `tstate_delete_common()` -- we just need to remove an assertion. Keeping the thread attached means that a stop-the-world pause, such as for a `fork()`, won't commence until we remove our thread state from the interpreter's linked list. This prevents a crash when the child process tries to clean up the dead thread states. commit 05e0b67a43c5c1778dc2643c8b7c12864e135999 Author: Erlend E. Aasland <erlend@python.org> Date: Fri Mar 29 21:23:28 2024 +0100 gh-116664: In _warnings.c, make filters_version access thread-safe (#117374) - assert that the lock is held in already_warned() - protect 'filters_version' increment in warnings_filters_mutated_impl() commit 019143fecbfc26e69800d28d2a9e3392a051780b Author: Jason R. Coombs <jaraco@jaraco.com> Date: Fri Mar 29 16:06:09 2024 -0400 gh-117348: Refactored RawConfigParser._read for similicity and comprehensibility (#117372) * Extract method for _read_inner, reducing complexity and indentation by 1. * Extract method for _raise_all and yield ParseErrors from _read_inner. Reduces complexity by 1 and reduces touch points for handling errors in _read_inner. * Prefer iterators to splat expansion and literal indexing. * Extract method for _strip_comments. Reduces complexity by 7. * Model the file lines in a class to encapsulate the comment status and cleaned value. * Encapsulate the read state as a dataclass * Extract _handle_continuation_line and _handle_rest methods. Reduces complexity by 8. * Reindent * At least for now, collect errors in the ReadState * Check for missing section header separately. * Extract methods for _handle_header and _handle_option. Reduces complexity by 6. * Remove unreachable code. Reduces complexity by 4. * Remove unreachable branch * Handle error condition early. Reduces complexity by 1. * Add blurb * Move _raise_all to ParsingError, as its behavior is most closely related to the exception class and not the reader. * Split _strip* into separate methods. * Refactor _strip_full to compute the strip just once and use 'not any' to determine the factor. * Replace use of 'sys.maxsize' with direct computation of the stripped value. * Extract has_comments as a dynamic property. * Implement clean as a cached property. * Model comment prefixes in the RawConfigParser within a prefixes namespace. * Use a regular expression to search for the first match. Avoids mutating variables and tricky logic and over-computing all of the starts when only the first is relevant. commit 01bd74eadbc4ff839d39762fae6366f50c1e116e Author: Sam Gross <colesbury@gmail.com> Date: Fri Mar 29 15:33:06 2024 -0400 gh-117300: Use stop the world to make `sys._current_frames` and `sys._current_exceptions` thread-safe. (#117301) This adds a stop the world pause to make the two functions thread-safe when the GIL is disabled in the free-threaded build. Additionally, the main test thread may call `sys._current_exceptions()` as soon as `g_raised.set()` is called. The background thread may not yet reach the `leave_g.wait()` line. commit 94c97423a9c4969f8ddd4a3aa4aacb99c4d5263d Author: Guido van Rossum <guido@python.org> Date: Fri Mar 29 11:31:09 2024 -0700 Fix broken format in error for bad input in summarize_stats.py (#117375) When you pass the script a non-existent input file, you get a TypeError instead of the intended ValueError. commit 5d21d884b6ffa45dac50a5f9a07c41356a8478b4 Author: mpage <mpage@meta.com> Date: Fri Mar 29 10:42:02 2024 -0700 gh-111926: Avoid locking in PyType_IsSubtype (#117275) Read the MRO in a thread-unsafe way in `PyType_IsSubtype` to avoid locking. Fixing this is tracked in #117306. The motivation for this change is in support of making weakrefs thread-safe in free-threaded builds: `WeakValueDictionary` uses a special dictionary function, `_PyDict_DelItemIf` to remove dead weakrefs from the dictionary. `_PyDict_DelItemIf` removes a key if a user supplied predicate evaluates to true for the value associated with the key. Crucially for the `WeakValueDictionary` use case, the predicate evaluation + deletion sequence is atomic, provided that the predicate doesn’t suspend. The predicate used by `WeakValueDictionary` includes a subtype check, which we must ensure doesn't suspend in free-threaded builds. commit 19c1dd60c5b53fb0533610ad139ef591294f26e8 Author: Sam Gross <colesbury@gmail.com> Date: Fri Mar 29 13:35:43 2024 -0400 gh-117323: Make `cell` thread-safe in free-threaded builds (#117330) Use critical sections to lock around accesses to cell contents. The critical sections are no-ops in the default (with GIL) build. commit 397d88db5e9ab2a43de3fdf5f8b973a949edc405 Author: Sam Gross <colesbury@gmail.com> Date: Fri Mar 29 13:34:04 2024 -0400 gh-117344: Skip flaky tests in free-threaded build (#117355) The tests are not reliable with the GIL disabled. In theory, they can fail with the GIL enabled too, but the failures are much more likely with the GIL disabled. commit f05fb2e65c2dffdfae940f2707765c4994925205 Author: Sam Gross <colesbury@gmail.com> Date: Fri Mar 29 13:33:04 2024 -0400 gh-112529: Don't untrack tuples or dicts with zero refcount (#117370) The free-threaded GC sometimes sees objects with zero refcount. This can happen due to the delay in merging biased reference counting fields, and, in the future, due to deferred reference counting. We should not untrack these objects or they will never be collected. This fixes the refleaks in the free-threaded build. commit ddf95b5f16031cdbd0d728e55eb06dff002a8678 Author: Erlend E. Aasland <erlend@python.org> Date: Fri Mar 29 18:26:06 2024 +0100 gh-116664: Fix unused var warnings in _warnings.c in non-free-threaded builds (#117373) The warnings were introduced by commit c1712ef06. commit 0fa571dbcdf19b541276cb00bb929381930467b2 Author: Tian Gao <gaogaotiantian@hotmail.com> Date: Fri Mar 29 09:02:01 2024 -0700 Refactor pdb executable targets (#112570) Co-authored-by: Jason R. Coombs <jaraco@jaraco.com> commit 54f7e14500471d1c46fb553adb3ca24cd1fef084 Author: Pedro Lacerda <pslacerda@users.noreply.github.com> Date: Fri Mar 29 12:05:00 2024 -0300 gh-66449: configparser: Add support for unnamed sections (#117273) Co-authored-by: Jason R. Coombs <jaraco@jaraco.com> commit d9cfe7e565a6e2dc15747a904736264e31a10be4 Author: Nikita Sobolev <mail@sobolevn.me> Date: Fri Mar 29 14:14:25 2024 +0300 gh-117166: Ignore empty and temporary dirs in `test_makefile` (#117190) commit 35b6c4a4da201a947b2ceb96ae4c0d83d4d2df4f Author: Victor Stinner <vstinner@python.org> Date: Fri Mar 29 11:25:17 2024 +0100 gh-117347: Fix test_clinic side effects (#117363) Save/restore converters in ClinicWholeFileTest and ClinicExternalTest. commit 7e2fef865899837c47e91ef0180fa59eb03e840b Author: neonene <53406459+neonene@users.noreply.github.com> Date: Fri Mar 29 18:40:48 2024 +0900 gh-117142: ctypes: Migrate global vars to module state (GH-117189) commit 2e9be80c99f635c2f7761e8356b0260922d6e7a6 Author: Gregory P. Smith <greg@krypto.org> Date: Thu Mar 28 17:58:37 2024 -0700 Fix reversed assertRegex checks in test_ssl. (#117351) commit 8eec7ed714e65d616573b7331780b0aa43c6ed6a Author: 傅立业（Chris Fu） <17433201@qq.com> Date: Fri Mar 29 08:19:20 2024 +0800 gh-117110: Fix subclasses of typing.Any with custom constructors (#117111) commit a17f313e3958e825db9a83594c8471a984316536 Author: Christopher Chianelli <christopher@timefold.ai> Date: Thu Mar 28 18:26:56 2024 -0400 gh-117339: Use NULL instead of None for LOAD_SUPER_ATTR in dis docs (GH-117343) commit 26d328b2ba26374fb8d9ffe8215ecef7c5e3f7a2 Author: Michael Droettboom <mdboom@gmail.com> Date: Thu Mar 28 18:23:08 2024 -0400 GH-117121: Add pystats to JIT builds (GH-117346) commit 14f1ca7d5363386163839b31ce987423daecc3de Author: Nice Zombies <nineteendo19d0@gmail.com> Date: Thu Mar 28 22:20:08 2024 +0100 gh-117335: Handle non-iterables for `ntpath.commonpath` (GH-117336) commit 18cf239e39e25e6cef50ecbb7f197a82f8920ff5 Author: Brandt Bucher <brandtbucher@microsoft.com> Date: Thu Mar 28 14:02:34 2024 -0700 Increase the JIT CI timeouts to 75 minutes (GH-117342) commit 29829b58a8328a7c2ccacaa74c1d7d120a5e5ca5 Author: Malcolm Smith <smith@chaquo.com> Date: Thu Mar 28 19:59:12 2024 +0000 gh-117294: Report DocTestCase as skipped if all examples in the doctest are skipped (GH-117297) commit efcc96844e7c66fcd6c23ac2d557ca141614ce9a Author: Tian Gao <gaogaotiantian@hotmail.com> Date: Thu Mar 28 11:23:29 2024 -0700 gh-69201: Separate stdout and stderr stream in test_pdb (#117308) commit 6702d2bf6edcd5b5415e17837383623b9d76a5b8 Author: Victor Stinner <vstinner@python.org> Date: Thu Mar 28 17:40:58 2024 +0100 gh-114331: Skip decimal test_maxcontext_exact_arith on s390x (#117326) commit c1712ef066321c01bf09cba3f22fc474b5b8dfa7 Author: Erlend E. Aasland <erlend@python.org> Date: Thu Mar 28 16:05:08 2024 +0100 gh-116664: Make module state Py_SETREF's in _warnings thread-safe (#116959) Mark the swap operations as critical sections. Add an internal Py_BEGIN_CRITICAL_SECTION_MUT API that takes a PyMutex pointer instead of a PyObject pointer. commit 9a388b9a64927c372d85f0eaec3de9b7320a6fb5 Author: Joachim Wuttke <j.wuttke@fz-juelich.de> Date: Thu Mar 28 14:43:07 2024 +0100 bpo-43848: explain optional argument mtime in gzip.py. (GH-25410) Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com> commit 8dbfdb2957a7baade3a88661517f163ad694c39f Author: Sam Gross <colesbury@gmail.com> Date: Thu Mar 28 09:28:39 2024 -0400 gh-110481: Fix biased reference counting queue initialization. (#117271) The biased reference counting queue must be initialized from the bound (active) thread because it uses `_Py_ThreadId()` as the key in a hash table. commit 9a1e55b8c5723206116f7016921be3937ef2f4e5 Author: Chris Markiewicz <effigies@gmail.com> Date: Thu Mar 28 06:59:31 2024 -0400 gh-117178: Recover lazy loading of self-referential modules (#117179) commit 4c71d51a4b7989fc8754ba512c40e21666f9db0d Author: Jelle Zijlstra <jelle.zijlstra@gmail.com> Date: Thu Mar 28 04:30:31 2024 -0600 gh-117266: Fix crashes on user-created AST subclasses (GH-117276) Fix crashes on user-created AST subclasses commit 8cb7d7ff86a1a2d41195f01ba4f218941dd7308c Author: Gregory P. Smith <greg@krypto.org> Date: Thu Mar 28 03:11:58 2024 -0700 gh-117310: Remove extra DECREF on "no ciphers" error path in `_ssl._SSLContext` constructor (#117309) Remove extra self DECREF on ssl "no ciphers" error path. This doesn't come up in practice because nobody links against a broken OpenSSL library that provides nothing. commit 6c8ac8a32fd6de1960526561c44bc5603fab0f3e Author: Erlend E. Aasland <erlend@python.org> Date: Thu Mar 28 09:40:37 2024 +0100 gh-116303: Handle disabled test modules in test.support helpers (#116482) Make sure test.support helpers skip iso. failing if test extension modules are disabled. Also log TEST_MODULES in test.pythoninfo. commit 0f27672c5002de96c9f1228b12460d5ce3f1d190 Author: Russell Keith-Magee <russell@keith-magee.com> Date: Thu Mar 28 16:13:13 2024 +0800 gh-114099: Add documentation for iOS platform (GH-117057) Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com> Co-authored-by: Jacob Coffee <jacob@z7x.org> Co-authored-by: Malcolm Smith <smith@chaquo.com> Co-authored-by: Ned Deily <nad@python.org> commit f006338017cfbf846e8f7391b9ee5f69df8dc620 Author: Russell Keith-Magee <russell@keith-magee.com> Date: Thu Mar 28 15:59:33 2024 +0800 gh-114099: Additions to standard library to support iOS (GH-117052) Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com> Co-authored-by: Malcolm Smith <smith@chaquo.com> Co-authored-by: Ned Deily <nad@python.org> commit b44898299a2ed97045c270f6474785da2ff07ced Author: Tim Hatch <tim@timhatch.com> Date: Wed Mar 27 23:54:51 2024 -0700 gh-89739: gh-77140: Support zip64 in zipimport (GH-94146) * Reads zip64 files as produced by the zipfile module * Include tests (somewhat slow, however, because of the need to create "large" zips) * About the same amount of strictness reading invalid zip files as zipfile has * Still works on files with prepended data (like pex) There are a lot more test cases at https://github.com/thatch/zipimport64/ that give me confidence that this works for real-world files. Fixes #89739 and #77140. --------- Co-authored-by: Itamar Ostricher <itamarost@gmail.com> Reviewed-by: Gregory P. Smith <greg@krypto.org> commit 2cedd25c14d3acfdcb5e8ee55132ce3e334ab8fe Author: Illia Volochii <illia.volochii@gmail.com> Date: Thu Mar 28 08:46:01 2024 +0200 Revert "gh-116886: Temporarily disable CIfuzz (memory) (GH-117018)" (GH-117289) This reverts commit 1ab0d0b1167d78bf19661a3b5e533a2b68a57604. This reverts #117018. I expect the issue to be fixed based on https://github.com/google/oss-fuzz/pull/11708#issuecomment-2006442396 and https://github.com/actions/runner-images/issues/9491. commit eefff682f09394fe4f18b7d7c6ac4c635caadd02 Author: Malcolm Smith <smith@chaquo.com> Date: Wed Mar 27 22:11:44 2024 +0000 gh-108277: Make test_os tolerate 10 ms diff for timerfd on Android emulators (#117223) commit 7aa89bc43e0bcf49eee5a39b5a7ba8f996f20d00 Author: Victor Stinner <vstinner@python.org> Date: Wed Mar 27 23:10:14 2024 +0100 gh-113317: Change how Argument Clinic lists converters (#116853) * Add a new create_parser_namespace() function for PythonParser to pass objects to executed code. * In run_clinic(), list converters using 'converters' and 'return_converters' dictionarties. * test_clinic: add 'object()' return converter. * Use also create_parser_namespace() in eval_ast_expr(). Co-authored-by: Erlend E. Aasland <erlend@python.org> commit 669ef49c7d42f35da6f7ee280102353b9b37f83e Author: Seth Michael Larson <seth@python.org> Date: Wed Mar 27 16:56:14 2024 -0500 gh-99108: Update and check HACL* version information (GH-117295) * Update and check HACL* version information commit 262fb911ab7df8e890ebd0efb0773c3e0b5a757f Author: Irit Katriel <1055913+iritkatriel@users.noreply.github.com> Date: Wed Mar 27 17:38:19 2024 +0000 gh-117288: Allocate fewer label IDs in _PyCfg_ToInstructionSequence (#117290) commit 74c8568d07719529b874897598d8b3bc25ff0434 Author: Malcolm Smith <smith@chaquo.com> Date: Wed Mar 27 16:53:27 2024 +0000 gh-71042: Add `platform.android_ver` (#116674) commit ce00de4c8cd39816f992e749c1074487d93abe9d Author: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com> Date: Wed Mar 27 16:46:35 2024 +0200 gh-117225: doctest: only print "and X failed" when non-zero, don't pluralise "1 items" (#117228) commit 92397d5ead38dde4154e70d00f24973bcf2a925a Author: Raymond Hettinger <rhettinger@users.noreply.github.com> Date: Wed Mar 27 09:04:32 2024 -0500 Add statistics recipe for sampling from an estimated probability density distribution (#117221) commit b3e8c78ed7aa9bbd1084375587b99200c687cec9 Author: Tian Gao <gaogaotiantian@hotmail.com> Date: Tue Mar 26 18:20:12 2024 -0700 gh-113548: Allow CLI arguments to `pdb -m` (#113557) commit 48c0b05cf0dd2db275bd4653f84aa36c22bddcd2 Author: Adorilson Bezerra <adorilson@gmail.com> Date: Tue Mar 26 19:08:08 2024 +0000 Change links on the index page (#117230) commit af1b0e94400d1bf732466d675054df8cf7dfb62d Author: AN Long <aisk@users.noreply.github.com> Date: Wed Mar 27 02:26:48 2024 +0800 gh-104242: Enable test_is_char_device_true in pathlib test on all platform (GH-116983) commit 79be75735c9d77972112cecc8d7e1af28c176ed0 Author: Irit Katriel <1055913+iritkatriel@users.noreply.github.com> Date: Tue Mar 26 15:18:17 2024 +0000 gh-115775: Compiler adds __static_attributes__ field to classes (#115913) commit 70969d53a77a8a190c40a30419e772bc874a4f62 Author: Antonio <57417288+amaddio@users.noreply.github.com> Date: Tue Mar 26 15:10:29 2024 +0100 gh-97901 add missing text/rtf to mimetypes (GH-97902) Co-authored-by: Noam Cohen <noam@noam.me> commit 4ec347760f98b156c6a2d42ca397af6b0b6ecc50 Author: AN Long <aisk@users.noreply.github.com> Date: Tue Mar 26 22:09:57 2024 +0800 gh-115538: Use isolate mode when running venv test_multiprocessing_recursion() (#117116) Co-authored-by: Victor Stinner <vstinner@python.org> commit 743f2c68f478279e1e56577fe95a0ed112b9abc5 Author: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com> Date: Tue Mar 26 16:09:09 2024 +0200 pre-commit: add `check-case-conflict` and `check-merge-conflict` (#117259) commit 4abca7e1e7e2764faf20c7e677ea5c9ea9dbffe2 Author: Paulo Neves <ptsneves@users.noreply.github.com> Date: Tue Mar 26 13:37:50 2024 +0100 gh-98966: Handle stdout=subprocess.STDOUT (GH-98967) Explicitly handle the case where stdout=STDOUT as otherwise the existing error handling gets confused and reports hard to understand errors. Signed-off-by: Paulo Neves <ptsneves@gmail.com> commit 9654daf793b534b44a831c80f43505ab9e380f1f Author: Serhiy Storchaka <storchaka@gmail.com> Date: Tue Mar 26 13:26:45 2024 +0200 gh-66543: Fix mimetype.guess_type() (GH-117217) Fix parsing of the following corner cases: * URLs with only a host name * URLs containing a fragment * URLs containing a query * filenames with only a UNC sharepoint on Windows Co-authored-by: Dong-hee Na <donghee.na92@gmail.com> commit 8bef34f625e21886b1c64544c060e19ee2e229bf Author: Mark Shannon <mark@hotpy.org> Date: Tue Mar 26 11:11:42 2024 +0000 GH-117108: Set the "old space bit" to "visited" for all young objects (#117213) Change old space bit of young objects from 0 to gcstate->visited_space. This ensures that any object created *and* collected during cycle GC has the bit set correctly. commit bf82f77957a31c3731b4ec470c406f5708ca9ba3 Author: Mark Shannon <mark@hotpy.org> Date: Tue Mar 26 09:35:11 2024 +0000 GH-116422: Tier2 hot/cold splitting (GH-116813) Splits the "cold" path, deopts and exits, from the "hot" path, reducing the size of most jitted instructions, at the cost of slower exits. commit 61599a48f52e951d8813877ee311d2a830ba2cd8 Author: Pablo Galindo Salgado <Pablogsal@gmail.com> Date: Tue Mar 26 09:30:46 2024 +0000 bpo-24612: Improve syntax error for 'not' after an operator (GH-28170) Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com> commit 771902c257372e6c4df1ead4e8c46308561db7a7 Author: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com> Date: Tue Mar 26 11:13:32 2024 +0200 gh-83845: Add tests for operator module (#115883) Co-authored-by: Karthikeyan Singaravelan <tir.karthi@gmail.com> commit ea9a296fce2f786b4cf43c7924e5de01061f27ca Author: yevgeny hong <hongyevgeny@gmail.com> Date: Tue Mar 26 16:45:43 2024 +0900 gh-115627: Fix PySSL_SetError handling SSL_ERROR_SYSCALL (GH-115628) Python 3.10 changed from using SSL_write() and SSL_read() to SSL_write_ex() and SSL_read_ex(), but did not update handling of the return value. Change error handling so that the return value is not examined. OSError (not EOF) is now returned when retval is 0. According to *recent* man pages of all functions for which we call PySSL_SetError, (in OpenSSL 3.0 and 1.1.1), their return value should be used to determine whether an error happened (i.e. if PySSL_SetError should be called), but not what kind of error happened (so, PySSL_SetError shouldn't need retval). To get the error, we need to use SSL_get_error. Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Petr Viktorin <encukou@gmail.com> commit d52bdfb19fadd7614a0e5abaf68525fc7300e841 Author: Victor Stinner <vstinner@python.org> Date: Tue Mar 26 08:35:59 2024 +0100 gh-83434: Disable XML in regrtest when -R option is used (#117232) commit 9f74e86c78853c101a23e938f8e32ea838d8f62e Author: Sebastian Pipping <sebastian@pipping.org> Date: Tue Mar 26 02:48:27 2024 +0100 gh-117187: Fix XML tests for vanilla Expat <2.6.0 (GH-117203) This fixes XML unittest fallout from the https://github.com/python/cpython/issues/115398 security fix. When configured using `--with-system-expat` on systems with older pre 2.6.0 versions of libexpat, our unittests were failing. * sax|etree: Simplify Expat version guard where simplifiable Idea by Matěj Cepl * sax|etree: Fix reparse deferral tests for vanilla Expat <2.6.0 This *does not fix* the case of distros with an older version of libexpat with the 2.6.0 feature backported as a security fix. (Ubuntu is a known example of this with its libexpat1 2.5.0-2ubunutu0.1 package) commit 872e212378ef86392069034afd80bb53896fd93d Author: Jonathan Protzenko <protz@microsoft.com> Date: Mon Mar 25 17:35:26 2024 -0700 gh-99108: Refresh HACL*; update modules accordingly; fix namespacing (GH-117237) Pulls in a new update from https://github.com/hacl-star/hacl-star and fixes our C "namespacing" done by `Modules/_hacl/refresh.sh`. commit 8945b7ff55b87d11c747af2dad0e3e4d631e62d6 Author: Eric V. Smith <ericvsmith@users.noreply.github.com> Date: Mon Mar 25 19:59:14 2024 -0400 gh-109870: Dataclasses: batch up exec calls (gh-110851) Instead of calling `exec()` once for each function added to a dataclass, only call `exec()` once per dataclass. This can lead to speed improvements of up to 20%. commit 7ebad77ad65ab4d5d8d0c333256a882262cec189 Author: Raymond Hettinger <rhettinger@users.noreply.github.com> Date: Mon Mar 25 18:49:44 2024 -0500 Sync main docs and docstring for median_grouped(). (gh-117214) commit 0821923aa979a72464c5da8dfa53a719bba5801c Author: Nice Zombies <nineteendo19d0@gmail.com> Date: Mon Mar 25 23:55:11 2024 +0100 gh-117114: Make os.path.isdevdrive available on all platforms (GH-117115) commit c2276176d543a2fc2d57709c2787f99850fbb073 Author: Adorilson Bezerra <adorilson@gmail.com> Date: Mon Mar 25 22:34:20 2024 +0000 Add information about negative indexes to sequence datamodel doc (#110903) Co-authored by Terry Jan Reedy commit 23e4f80ce2a2bac50acd1785e791316d5b578b8d Author: Mark Shannon <mark@hotpy.org> Date: Mon Mar 25 20:43:51 2024 +0000 A few minor tweaks to get stats working and compiling cleanly. (#117219) Fixes a compilation error when configured with `--enable-pystats`, an array size issue, and an unused variable. commit 507896d97dcff2d7999efa264b29d9003c525c49 Author: Victor Stinner <vstinner@python.org> Date: Mon Mar 25 17:32:20 2024 +0100 gh-116936: Add PyType_GetModuleByDef() to the limited C API (#116937) commit 0c1a42cf9c8cd0d4534d5c1d58f118ce7c5c446e Author: Serhiy Storchaka <storchaka@gmail.com> Date: Mon Mar 25 17:32:11 2024 +0200 gh-87193: Support bytes objects with refcount > 1 in _PyBytes_Resize() (GH-117160) Create a new bytes object and destroy the old one if it has refcount > 1. commit 01e7405da400e8997f8964d06cc414045e144681 Author: Tian Gao <gaogaotiantian@hotmail.com> Date: Mon Mar 25 08:18:09 2024 -0700 gh-112948: Make pdb completion similar to repl completion (#112950) commit 9db2a8f914ad59019d448cecc43b6d45f46424a0 Author: Raymond Hettinger <rhettinger@users.noreply.github.com> Date: Mon Mar 25 09:26:42 2024 -0500 Minor markup and grammar fixes in the statistics docs (gh-117216) commit eebea7e515462b503632ada74923ec3246599c9c Author: Kirill Podoprigora <kirill.bast9@mail.ru> Date: Sun Mar 24 20:34:55 2024 +0200 gh-117176: Fix compiler warning in Python/optimizer_bytecodes.c (GH-117199) commit 83485a095363dad6c97b19af2826ca0c34343bfc Author: Totally a booplicate <53382877+Booplicate@users.noreply.github.com> Date: Sun Mar 24 18:48:40 2024 +0300 gh-112571: Move fish venv activation script into the common folder (GH-117169) pythongh-112571: allow using fish venv activation script on windows The fish shell can be used on windows under cygwin or msys2. This change moves the script to the common folder so the venv module will install it on both posix and nt systems (like the bash script). commit 78a651fd7fbe7a3d1702e40f4cbfa72d87241ef0 Author: Terry Jan Reedy <tjreedy@udel.edu> Date: Sun Mar 24 11:38:34 2024 -0400 gh-117194: Properly format 'base64' header in What's New (#117198) It needs 6, not 3, '-'s. commit f267d5bf2a99fbeb26a720d1c87c1f0557424b14 Author: Kerim Kabirov <the.privat33r+gh@pm.me> Date: Sun Mar 24 14:59:14 2024 +0100 GH-115986 Docs: promote pprint.pp usage as a default (#116614) Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com> commit 39df7732178c8e8f75b12f069a3dbc1715c99995 Author: LilKS <1244886+LilKS@users.noreply.github.com> Date: Sun Mar 24 11:01:07 2024 +0100 gh-101760: Improve the imaplib.IMAP4 example (#101764) Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com> commit a1e948edba9ec6ba61365429857f7a087c5edf51 Author: Raymond Hettinger <rhettinger@users.noreply.github.com> Date: Sun Mar 24 11:35:58 2024 +0200 Add cumulative option for the new statistics.kde() function. (#117033) commit d610d821fd210dce63a1132c274ffdf8acc510bc Author: Irit Katriel <1055913+iritkatriel@users.noreply.github.com> Date: Sat Mar 23 22:32:33 2024 +0000 gh-112383: teach dis how to interpret ENTER_EXECUTOR (#117171) commit 6c83352bfe78a7d567c8d76257df6eb91d5a7245 Author: Ken Jin <kenjin@python.org> Date: Sun Mar 24 06:19:17 2024 +0800 gh-117180: Complete call sequence when trace stack overflow (GH-117184) --------- Co-authored-by: Peter Lazorchak <lazorchakp@gmail.com> Co-authored-by: Guido van Rossum <gvanrossum@users.noreply.github.com> Co-authored-by: Guido van Rossum <gvanrossum@gmail.com> commit f11d0d8be8af28e1368c3c7c116218cf65ddf93e Author: Erik Soma <stillusingirc@gmail.com> Date: Sat Mar 23 11:39:35 2024 -0400 gh-91227: Ignore ERROR_PORT_UNREACHABLE in proactor recvfrom() (#32011) commit 9967b568edd2e35b0415c14c7242f3ca2c0dc03d Author: Victor Stinner <vstinner@python.org> Date: Sat Mar 23 13:01:20 2024 +0100 gh-117008: Fix functools test_recursive_pickle() (#117009) Use support.infinite_recursion() in test_recursive_pickle() of test_functools to prevent a stack overflow on "ARM64 Windows Non-Debug" buildbot. Lower Py_C_RECURSION_LIMIT to 1,000 frames on Windows ARM64. commit 72eea512b88f8fd68b7258242c37da963ad87360 Author: Barney Gale <barney.gale@gmail.com> Date: Fri Mar 22 19:14:09 2024 +0000 GH-106747: Document another difference between `glob` and `pathlib`. (#116518) Document that `path.glob()` might return *path*, whereas `glob.glob(root_dir=path)` will never return an empty string corresponding to *path*. commit e28477f214276db941e715eebc8cdfb96c1207d9 Author: Mark Shannon <mark@hotpy.org> Date: Fri Mar 22 18:43:25 2024 +0000 GH-117108: Change the size of the GC increment to about 1% of the total heap size. (GH-117120) commit e2e0b4b4b92694ba894e02b4a66fd87c166ed10f Author: Serhiy Storchaka <storchaka@gmail.com> Date: Fri Mar 22 20:19:10 2024 +0200 gh-113024: C API: Add PyObject_GenericHash() function (GH-113025) commit 567ab3bd15398c8c7b791f3e376ae3e3c0bbe079 Author: Serhiy Storchaka <storchaka@gmail.com> Date: Fri Mar 22 20:08:00 2024 +0200 gh-117084: Fix ZIP file extraction for directory entry names with backslashes on Windows (GH-117129) commit 5a78f6e798d5c2af1dba2df6c9f1f1e5aac02a86 Author: Serhiy Storchaka <storchaka@gmail.com> Date: Fri Mar 22 20:03:48 2024 +0200 gh-117134: Microoptimize glob() for include_hidden=True (GH-117135) commit 00baaa21de229a6db80ff2b84c2fd6ad1999a24c Author: Vinay Sajip <vinay_sajip@yahoo.co.uk> Date: Fri Mar 22 17:25:51 2024 +0000 [docs] Fix typo in docstring and add example to logging cookbook. (GH-117157) commit 40d75c2b7f5c67e254d0a025e0f2e2c7ada7f69f Author: Jakub Stasiak <jakub@stasiak.at> Date: Fri Mar 22 17:49:56 2024 +0100 GH-113171: Fix "private" (non-global) IP address ranges (GH-113179) * GH-113171: Fix "private" (really non-global) IP address ranges The _private_networks variables, used by various is_private implementations, were missing some ranges and at the same time had overly strict ranges (where there are more specific ranges considered globally reachable by the IANA registries). This patch updates the ranges with what was missing or otherwise incorrect. I left 100.64.0.0/10 alone, for now, as it's been made special in [1] and I'm not sure if we want to undo that as I don't quite understand the motivation behind it. The _address_exclude_many() call returns 8 networks for IPv4, 121 networks for IPv6. [1] https://github.com/python/cpython/issues/61602 commit 3be9b9d8722696b95555937bb211dc4cda714d56 Author: Steve Dower <steve.dower@python.org> Date: Fri Mar 22 15:00:50 2024 +0000 Fix get_packagefamilyname helper function on Windows 32-bit (GH-117153) commit 63d6f2623ef2aa90f51c6a928b96845b9b380d89 Author: NGRsoftlab <78017794+NGRsoftlab@users.noreply.github.com> Date: Fri Mar 22 14:25:38 2024 +0300 gh-117068: Remove useless code in bytesio.c:resize_buffer() (GH-117069) Co-authored-by: i.khabibulin <i.khabibulin@ngrsoftlab.ru> commit 42ae924d278c48a719fb0ab86357f3235a9f7ab9 Author: Petr Viktorin <encukou@gmail.com> Date: Fri Mar 22 10:42:18 2024 +0100 gh-117127: glob tests: Reopen dir_fd to pick up directory changes (GH-117128) commit 8383915031942f441f435a5ae800790116047b80 Author: Tim Peters <tim.peters@gmail.com> Date: Thu Mar 21 22:27:25 2024 -0500 GH-116939: Rewrite binarysort() (#116940) Rewrote binarysort() for clarity. Also changed the signature to be more coherent (it was mixing sortslice with raw pointers). No change in method or functionality. However, I left some experiments in, disabled for now via `#if` tricks. Since this code was first written, some kinds of comparisons have gotten enormously faster (like for lists of floats), which changes the tradeoffs. For example, plain insertion sort's simpler innermost loop and highly predictable branches leave it very competitive (even beating, by a bit) binary insertion when comparisons are very cheap, despite that it can do many more compares. And it wins big on runs that are already sorted (moving the next one in takes only 1 compare then). So I left code for a plain insertion sort, to make future experimenting easier. Also made the maximum value of minrun a `#define` (``MAX_MINRUN`) to make experimenting with that easier too. And another bit of `#if``-disabled code rewrites binary insertion's innermost loop to remove its unpredictable branch. Surprisingly, this doesn't really seem to help overall. I'm unclear on why not. It certainly adds more instructions, but they're very simple, and it's hard to be believe they cost as much as a branch miss. commit 97ba910e47ad298114800587979ce7beb0a705a3 Author: Guido van Rossum <guido@python.org> Date: Thu Mar 21 18:27:48 2024 -0700 gh-108716:: Remove _PyStaticCode_Init/Fini (#117141) More deepfreeze cleanup. commit b3d25df8d38b79310587da54dbd88b06a16d4904 Author: Eric Snow <ericsnowcurrently@gmail.com> Date: Thu Mar 21 18:20:20 2024 -0600 gh-105716: Fix _PyInterpreterState_IsRunningMain() For Embedders (gh-117140) When I added _PyInterpreterState_IsRunningMain() and friends last year, I tried to accommodate applications that embed Python but don't call _PyInterpreterState_SetRunningMain() (not that they're expected to). That mostly worked fine until my recent changes in gh-117049, where the subtleties with the fallback code led to failures; the change ended up breaking test_tools.test_freeze, which exercises a basic embedding situation. The simplest fix is to drop the fallback code I originally added to _PyInterpreterState_IsRunningMain() (and later to _PyThreadState_IsRunningMain()). I've kept the fallback in the _xxsubinterpreters module though. I've also updated Py_FrozenMain() to call _PyInterpreterState_SetRunningMain(). commit c4bf58a14f162557038a1535ca22c52b49d81d7b Author: Thomas A Caswell <tcaswell@gmail.com> Date: Thu Mar 21 19:54:50 2024 -0400 gh-116745: Remove all internal usage of @LIBPYTHON@ (#116746) Replace with MODULE_LDFLAGS. commit 3ec57307e70ee6f42410e844d3399bbd598917ba Author: Malcolm Smith <smith@chaquo.com> Date: Thu Mar 21 23:52:29 2024 +0000 gh-71052: Add Android build script and instructions (#116426) commit 50f9b0b1e0fb181875751cef951351ed007b6397 Author: Victor Stinner <vstinner@python.org> Date: Thu Mar 21 23:17:09 2024 +0100 gh-117061: Fix test_posix.test_sched_setaffinity() on RHEL9 (#117126) On RHEL9, sched_setaffinity(0, []) does not fail. commit 0907871d43bffb613cbd560224e1a9db13d06c06 Author: Ned Batchelder <ned@nedbatchelder.com> Date: Thu Mar 21 15:47:09 2024 -0400 docs: fix over-linking in dataclasses.rst (#117005) commit 570a82d46abfebb9976961113fb0f8bb400ad182 Author: Guido van Rossum <guido@python.org> Date: Thu Mar 21 12:37:41 2024 -0700 gh-117045: Add code object to function version cache (#117028) Changes to the function version cache: - In addition to the function object, also store the code object, and allow the latter to be retrieved even if the function has been evicted. - Stop assigning new function versions after a critical attribute (e.g. `__code__`) has been modified; the version is permanently reset to zero in this case. - Changes to `__annotations__` are no longer considered critical. (This fixes gh-109998.) Changes to the Tier 2 optimization machinery: - If we cannot map a function version to a function, but it is still mapped to a code object, we continue projecting the trace. The operand of the `_PUSH_FRAME` and `_POP_FRAME` opcodes can be either NULL, a function object, or a code object with the lowest bit set. This allows us to trace through code that calls an ephemeral function, i.e., a function that may not be alive when we are constructing the executor, e.g. a generator expression or certain nested functions. We will lose globals removal inside such functions, but we can still do other peephole operations (and even possibly [call inlining](https://github.com/python/cpython/pull/116290), if we decide to do it), which only need the code object. As before, if we cannot retrieve the code object from the cache, we stop projecting. commit c85d84166a84a5cb2d724012726bad34229ad24e Author: Will Childs-Klein <willck93@gmail.com> Date: Thu Mar 21 14:16:36 2024 -0500 gh-116333: Relax error string text expectations in SSL-related tests (GH-116334) * Relax error string text expectations in SSL-related tests As suggested [here][1], this change relaxes the OpenSSL error string text expectations in a number of tests. This was specifically done in support of more easily building CPython [AWS-LC][2], but because AWS-LC is a fork of [BoringSSL][3], it should increase compatibility with that library as well. In addition to the error string relaxations, we also add some guards around the `tls-unique` channel binding being used with TLSv1.3, as that feature (described in [RFC 6929][4]) is [not defined][5] for TLSv1.3. [1]: https://discuss.python.org/t/support-building-ssl-and-hashlib-modules-against-aws-lc/44505/4 [2]: https://github.com/aws/aws-lc [3]: https://github.com/google/boringssl [4]: https://datatracker.ietf.org/doc/html/rfc5929#section-3 [5]: https://datatracker.ietf.org/doc/html/rfc8446#appendix-C.5 commit 1f72fb5447ef3f8892b4a7a6213522579c618e8e Author: Sam Gross <colesbury@gmail.com> Date: Thu Mar 21 14:21:02 2024 -0400 gh-116522: Refactor `_PyThreadState_DeleteExcept` (#117131) Split `_PyThreadState_DeleteExcept` into two functions: - `_PyThreadState_RemoveExcept` removes all thread states other than one passed as an argument. It returns the removed thread states as a linked list. - `_PyThreadState_DeleteList` deletes those dead thread states. It may call destructors, so we want to "start the world" before calling `_PyThreadState_DeleteList` to avoid potential deadlocks. commit 50369e6c34d05222e5a0ec9443a9f7b230e83112 Author: Michael Droettboom <mdboom@gmail.com> Date: Thu Mar 21 13:27:46 2024 -0400 gh-116996: Add pystats about _Py_uop_analyse_and_optimize (GH-116997) commit 617158e07811edfd6fd552a3d84b0beedd8f1d18 Author: Eric Snow <ericsnowcurrently@gmail.com> Date: Thu Mar 21 11:15:02 2024 -0600 gh-76785: Drop PyInterpreterID_Type (gh-117101) I added it quite a while ago as a strategy for managing interpreter lifetimes relative to the PEP 554 (now 734) implementation. Relatively recently I refactored that implementation to no longer rely on InterpreterID objects. Thus now I'm removing it. commit abdd1f938f08e536864532b2071f144515ecc88b Author: Victor Stinner <vstinner@python.org> Date: Thu Mar 21 17:45:43 2024 +0100 gh-85283: Build _testconsole extension with limited C API (#117125) commit 8bea6c411d65cd987616b4ecdb86373e4f21f1c6 Author: Victor Stinner <vstinner@python.org> Date: Thu Mar 21 17:07:00 2024 +0100 gh-115754: Add Py_GetConstant() function (#116883) Add Py_GetConstant() and Py_GetConstantBorrowed() functions. In the limited C API version 3.13, getting Py_None, Py_False, Py_True, Py_Ellipsis and Py_NotImplemented singletons is now implemented as function calls at the stable ABI level to hide implementation details. Getting these constants still return borrowed references. Add _testlimitedcapi/object.c and test_capi/test_object.py to test Py_GetConstant() and Py_GetConstantBorrowed() functions. commit 5a76d1be8ef371b75ca65166726923c249b5f615 Author: Eric Snow <ericsnowcurrently@gmail.com> Date: Thu Mar 21 10:06:35 2024 -0600 gh-105716: Update interp->threads.main After Fork (gh-117049) I missed this in gh-109921. We also update Py_Exit() to call _PyInterpreterState_SetNotRunningMain(), if necessary. commit bbee57fa8c318cb26d6c8651254927a1972c9738 Author: Eric Snow <ericsnowcurrently@gmail.com> Date: Thu Mar 21 09:56:12 2024 -0600 gh-76785: Clean Up Interpreter ID Conversions (gh-117048) Mostly we unify the two different implementations of the conversion code (from PyObject * to int64_t. We also drop the PyArg_ParseTuple()-style converter function, as well as rename and move PyInterpreterID_LookUp(). commit e728303532168efab7694c55c82ea19b18bf8385 Author: Sam Gross <colesbury@gmail.com> Date: Thu Mar 21 10:01:16 2024 -0400 gh-116522: Stop the world before fork() and during shutdown (#116607) This changes the free-threaded build to perform a stop-the-world pause before deleting other thread states when forking and during shutdown. This fixes some crashes when using multiprocessing and during shutdown when running with `PYTHON_GIL=0`. This also changes `PyOS_BeforeFork` to acquire the runtime lock (i.e., `HEAD_LOCK(&_PyRuntime)`) before forking to ensure that data protected by the runtime lock (and not just the GIL or stop-the-world) is in a consistent state before forking. commit 1f8b24ef69896680d6ba6005e75e1cc79a744f9e Author: Malcolm Smith <smith@chaquo.com> Date: Thu Mar 21 13:20:57 2024 +0000 gh-71052: Implement `ctypes.util.find_library` on Android (GH-116379) commit d16c9d1278164f04778861814ebc87ed087511fc Author: Tian Gao <gaogaotiantian@hotmail.com> Date: Thu Mar 21 03:30:10 2024 -0700 gh-116987: Support class code objects in inspect.findsource() (GH-117025) commit 6547330f4e896c6748da23704b617e060e6cc68e Author: Adam Turner <9087854+AA-Turner@users.noreply.github.com> Date: Thu Mar 21 03:49:10 2024 +0000 GH-109653: Defer import of ``importlib.metadata._adapters`` (#109829) * adapters * Add comments for deferred imports with links to rationale. * Add blurb --------- Co-authored-by: Jason R. Coombs <jaraco@jaraco.com> commit 667294d5b2ee812ebe0c9c1efd58e2006b61f827 Author: Jason R. Coombs <jaraco@jaraco.com> Date: Wed Mar 20 23:01:24 2024 -0400 gh-117089: Apply changes from importlib_metadata 7.1.0 (#117094) * Apply changes from importlib_metadata 7.1.0 * Include the data sources in the makefile (even though they're not needed) commit f4cc77d494ee0e10ed84ce369f0910c70a2f6d44 Author: Victor Stinner <vstinner@python.org> Date: Thu Mar 21 00:06:24 2024 +0100 gh-116869: Enable -Werror in test_cext for Free Threading (#117106) Check for warnings, but don't enable the compiler flag -Werror=declaration-after-statement. commit 104602a6078564765b7b8f42888f8eaa37b129b1 Author: Victor Stinner <vstinner@python.org> Date: Wed Mar 20 23:52:23 2024 +0100 gh-105927: Limit PyWeakref_GetRef() to limited C API 3.13 (#117091) commit 8ad88984200b2ccddc0a08229dd2f4c14d1a71fc Author: Jason R. Coombs <jaraco@jaraco.com> Date: Wed Mar 20 17:11:00 2024 -0400 gh-117089: Move importlib.metadata tests to their own package (#117092) * Ensure importlib.metadata tests do not leak references in sys.modules. * Move importlib.metadata tests to their own package for easier syncing with importlib_metadata. * Update owners and makefile for new directories. * Add blurb commit 7d446548ef53f6c3de1097c6d44cada6642ddc85 Author: Carol Willing <carolcode@willingconsulting.com> Date: Wed Mar 20 14:00:59 2024 -0700 Fix sort order for "locale encoding" glossary item (#115794) Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM> commit 63289b9dfbc7d87e81f1517422ee91b6b6d19531 Author: Mark Shannon <mark@hotpy.org> Date: Wed Mar 20 18:24:02 2024 +0000 GH-117066: Tier 2 optimizer: Don't throw away good traces if we can't optimize them perfectly. (GH-117067) commit dcaf33a41d5d220523d71c9b35bc08f5b8405dac Author: Petr Viktorin <encukou@gmail.com> Date: Wed Mar 20 17:33:08 2024 +0100 gh-114314: ctypes: remove stgdict and switch to heap types (GH-116458) Before this change, ctypes classes used a custom dict subclass, `StgDict`, as their `tp_dict`. This acts like a regular dict but also includes extra information about the type. This replaces stgdict by `StgInfo`, a C struct on the type, accessed by `PyObject_GetTypeData()` (PEP-697). All usage of `StgDict` (mainly variables named `stgdict`, `dict`, `edict` etc.) is converted to `StgInfo` (named `stginfo`, `info`, `einfo`, etc.). Where the dict is actually used for class attributes (as a regular PyDict), it's now called `attrdict`. This change -- not overriding `tp_dict` -- is made to make me comfortable with the next part of this PR: moving the initialization logic from `tp_new` to `tp_init`. The `StgInfo` is set up in `__init__` of each class, with a guard that prevents calling `__init__` more than once. Note that abstract classes (like `Array` or `Structure`) are created using `PyType_FromMetaclass` and do not have `__init__` called. Previously, this was done in `__new__`, which also wasn't called for abstract classes. Since `__init__` can be called from Python code or skipped, there is a tested guard to ensure `StgInfo` is initialized exactly once before it's used. Co-authored-by: neonene <53406459+neonene@users.noreply.github.com> Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com> commit 44fbab43d8f3f2df07091d237824cf4fa1f6c57c Author: Russell Keith-Magee <russell@keith-magee.com> Date: Wed Mar 20 23:32:56 2024 +0800 gh-117058: Update GUI and packaging recommendations for macOS. (#117059) commit 9221ef2d8cb7f4cf37592eb650d4c8f972033000 Author: Brett Simmers <swtaarrs@users.noreply.github.com> Date: Wed Mar 20 08:18:26 2024 -0700 gh-116908: Only write to `_pending_calls.calls_to_do` with atomic operations (#117044) These writes to `pending->calls_to_do` need to be atomic, because other threads can read (atomically) from `calls_to_do` without holding `pending->mutex`. commit fc4599800778f9b130d5e336deadbdeb5bd3e5ee Author: jkriegshauser <jkriegshauser@gmail.com> Date: Wed Mar 20 07:33:28 2024 -0700 gh-116773: Ensure overlapped objects on Windows are not deallocated too early by asyncio (GH-116774) commit 519b2ae22b54760475bbf62b9558d453c703f9c6 Author: Serhiy Storchaka <storchaka@gmail.com> Date: Wed Mar 20 15:39:53 2024 +0200 gh-117021: Fix integer overflow in PyLong_AsPid() on non-Windows 64-bit platforms (GH-117064)

…6611) posixmodule.h: remove check on the limited C API, since these helpers are not part of the public C API.

…116791)

…6841) Argument Clinic now uses the PEP 737 "%T" format to format type name for the limited C API.

…n#116928)

…ython#116927) Argument Clinic now inlines _PyArg_CheckPositional() for the limited C API. The generated code should be as fast or even a little bit faster.

…on#117125)

vstinner added 3.10 only security fixes extension-modules C modules in the Modules dir labels Jun 25, 2020

vstinner changed the title ~~Convert a few stdlib extensions to the limited C API~~ Convert a few stdlib extensions to the limited C API (PEP 384) Nov 19, 2020

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vstinner changed the title ~~Convert a few stdlib extensions to the limited C API (PEP 384)~~ [C API] Convert a few stdlib extensions to the limited C API (PEP 384) Nov 19, 2020

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…6611) posixmodule.h: remove check on the limited C API, since these helpers are not part of the public C API.

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[C API] Convert a few stdlib extensions to the limited C API (PEP 384) #85283

[C API] Convert a few stdlib extensions to the limited C API (PEP 384) #85283

vstinner commented Jun 25, 2020 •

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[C API] Convert a few stdlib extensions to the limited C API (PEP 384) #85283

[C API] Convert a few stdlib extensions to the limited C API (PEP 384) #85283

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vstinner commented Jun 25, 2020 • edited by bedevere-app bot

Linked PRs

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vstinner commented Jun 25, 2020

rhettinger commented Jun 25, 2020

vstinner commented Sep 7, 2020

vstinner commented Sep 7, 2020

encukou commented Nov 5, 2020

shihai1991 commented Mar 31, 2021

vstinner commented Apr 1, 2021

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smontanaro commented Apr 4, 2021

smontanaro commented Apr 4, 2021

shihai1991 commented Apr 4, 2021

vstinner commented Apr 6, 2021

vstinner commented Apr 6, 2021

smontanaro commented Apr 7, 2021

shihai1991 commented May 12, 2021

vstinner commented Jun 25, 2020 •

edited by bedevere-app bot