gh-132876: workaround broken ldexp() on Windows 10 (GH-133135)
* gh-132876: workaround broken ldexp() on Windows 10
ldexp() fails to round subnormal results before Windows 11,
so hide their bug.
(cherry picked from commit cf8941c603)
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
Co-authored-by: Tim Peters <tim.peters@gmail.com>
gh-91048: Refactor and optimize remote debugging module (#134652)
Completely refactor Modules/_remote_debugging_module.c with improved
code organization, replacing scattered reference counting and error
handling with centralized goto error paths. This cleanup improves
maintainability and reduces code duplication throughout the module while
preserving the same external API.
Implement memory page caching optimization in Python/remote_debug.h to
avoid repeated reads of the same memory regions during debugging
operations. The cache stores previously read memory pages and reuses
them for subsequent reads, significantly reducing system calls and
improving performance.
Add code object caching mechanism with a new code_object_generation
field in the interpreter state that tracks when code object caches need
invalidation. This allows efficient reuse of parsed code object metadata
and eliminates redundant processing of the same code objects across
debugging sessions.
Optimize memory operations by replacing multiple individual structure
copies with single bulk reads for the same data structures. This reduces
the number of memory operations and system calls required to gather
debugging information from the target process.
Update Makefile.pre.in to include Python/remote_debug.h in the headers
list, ensuring that changes to the remote debugging header force proper
recompilation of dependent modules and maintain build consistency across
the codebase.
Also, make the module compatible with the free threading build as an extra :)
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
(cherry picked from commit 42b25ad4d3)
gh-115999: Add PyCodeObject.co_tlbc to the debug offsets (GH-134286)
(cherry picked from commit dd7f113057)
Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
gh-133960: Improve typing.evaluate_forward_ref (GH-133961)
As explained in GH-133960, this removes most of the behavior differences with ForwardRef.evaluate.
The remaining difference is about recursive evaluation of forwardrefs; this is practically useful
in cases where an annotation refers to a type alias that itself is string-valued.
This also improves several edge cases that were previously not handled optimally. For example,
the function now takes advantage of the partial evaluation behavior of ForwardRef.evaluate() to
evaluate more ForwardRefs in the FORWARDREF format.
This also fixes GH-133959 as a side effect, because the buggy behavior in GH-133959 derives from
evaluate_forward_ref().
(cherry picked from commit 57fef27cfc)
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
annotationlib docs: note that ForwardRef.evaluate eventually defaults to empty globals (GH-134661)
(cherry picked from commit b51b08a0a5)
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
gh-134582: Fix t-strings untokenize() roundtrip removing space between braces (GH-134603)
(cherry picked from commit 52509cc94b)
Co-authored-by: Loïc Simon <loic.pano@gmail.com>
gh-133684: Fix get_annotations() where PEP 563 is involved (GH-133795)
(cherry picked from commit 3e562b3942)
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
[3.14] gh-134168: fix `http.server` CLI support for IPv6 and `--directory` when serving over HTTPS (GH-134169)
(cherry picked from commit 2fd09b0110)
Co-authored-by: ggqlq <124190229+ggqlq@users.noreply.github.com>
gh-80334: fix multiprocessing.freeze_support for other spawn platforms (GH-134462)
Doc/library/multiprocessing.rst: freeze_support: Change to specify spawn method instead of platform
Have multiprocessing.freeze_support() enable on spawn, not just win32.
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(cherry picked from commit 80284b5c5e)
Co-authored-by: Eddy Mulyono <eddymul@gmail.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
gh-128840: Limit the number of parts in IPv6 address parsing (GH-128841)
GH-128840: Limit the number of parts in IPv6 address parsing
Limit length of IP address string to 39
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(cherry picked from commit 47f1161d3a)
Co-authored-by: Seth Michael Larson <seth@python.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
gh-132983: Make _zstd C code PEP 7 compliant (GH-134605)
Make _zstd C code PEP 7 compliant
(cherry picked from commit 973b8f69d3)
Co-authored-by: Emma Smith <emma@emmatyping.dev>
Further improves Advanced installation docs for PyManager (GH-134541)
(cherry picked from commit 99a9ab1c64)
Co-authored-by: Steve Dower <steve.dower@python.org>
Move from using critical sections to locks for the (de)compression methods.
Since the methods allow other threads to run, we should use a lock rather
than a critical section.
(cherry picked from commit 8dbc119719)
Co-authored-by: Emma Smith <emma@emmatyping.dev>
gh-134451: Converted `asyncio.tools.CycleFoundException` from dataclass to a regular exception type. (GH-134513)
(cherry picked from commit f9324cb3cb)
Co-authored-by: Evgeny Demchenko <v1mpire@icloud.com>
gh-114177: avoid calling connection lost callbacks when loop is already closed in asyncio subprocess (GH-134508)
(cherry picked from commit 5804ee7b46)
Co-authored-by: Kumar Aditya <kumaraditya@python.org>
GH-130397: remove special-casing of C stack depth for WASI (GH-134469)
Removed special-casing for WASI when setting C stack depth limits. Since WASI has its own C stack checking this isn't a security risk.
Also disabled some tests that stopped passing. They all happened to have already been disabled under Emscripten.
(cherry picked from commit ad42dc1909)
Co-authored-by: Brett Cannon <brett@python.org>
This is mostly a refactor to clean things up a bit, most notably the "XI namespace" code.
Making the session opaque requires adding the following internal-only functions:
* _PyXI_NewSession()
* _PyXI_FreeSession()
* _PyXI_GetMainNamespace()
(cherry picked from commit 4a4ac3ab4d, gh-134452)
Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
gh-134322: Fix `repr(threading.RLock)` (GH-134389)
Fix the `__repr__` value of `threading.RLock` from `_thread` module, when just created.
(cherry picked from commit fade146cfb)
Co-authored-by: Duprat <yduprat@gmail.com>
gh-133740: Fix locale.nl_langinfo(ALT_DIGITS) (GH-134468)
Set the LC_CTYPE locale to the LC_TIME locale even if
nl_langinfo(ALT_DIGITS) result is ASCII. The result is a list
separated by NUL characters and the code only checks the first list
item which can be ASCII whereas following items are non-ASCII.
Fix test__locale for the uk_UA locale on RHEL 7.
(cherry picked from commit 899c7dc283)
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-134370: Added clarification on instance annotations (GH-134387)
Instances of classes cannot have annotations,
however sometimes they will erroneously have the
__annotations__ attribute
(cherry picked from commit bd4046f4f8)
Co-authored-by: Alex Kautz <alex@takemobi.com>
This change includes some semi-related refactoring of queues and channels.
(cherry picked from commit d0eedfa10e, gh-134440)
Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
gh-131357: Add some extra tests for empty bytes and bytearray (GH-134458)
(cherry picked from commit 7309eb60c0)
Co-authored-by: Sergey Miryanov <sergey.miryanov@gmail.com>
Add notes on nogil & reinitialization to the Opt-Out section in Module Isolation HOWTO (GH-134141)
(cherry picked from commit 1f0a294e8c)
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Sam Gross <colesbury@gmail.com>
gh-134309: Add ``github.actor`` to the GitHub Actions concurrency key (GH-134310)
When inexperienced users create a PR from their default branch, all of the concurrency keys
collide as there is no namespacing. This becomes an issue at events with many new contributors,
where workflow runs are cancelled on other pull requests.
Disambiguate by adding the username of the relevant 'actor' to the concurrency key.
(cherry picked from commit 979d81a179)
Authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Kira <coldcaption@gmail.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Sviatoslav Sydorenko <sviat@redhat.com>
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
