Import exact-final copy.py with update_lib; defer Mapping ABC registration to the later library stage. Generate only proven marker corrections, retain observed debug recursion-limit expected failures, and copy the complete canonical builtin-doc discovery test using hash-pinned update_lib copy-test.
Assisted-by: OpenAI Codex:model identifier unavailable
Index conditional test classes and methods without crossing namespaces, reject ambiguous targets, and preserve inherited override indentation. Add hash-pinned whole-test copying that verifies execution context and exact source bytes, with focused Python fixtures.
Assisted-by: OpenAI Codex:model identifier unavailable
* Fix bytearray membership racing with resizing
Search exact bytes and int needles under the data read lock instead of
taking a temporary export. This prevents a concurrent slice replacement
from receiving BufferError for a callback-free membership operation.
Preserve export protection for generic index/buffer callbacks and actual
memoryviews. Add Python coverage for these contracts.
AI assistance: Codex/OpenAI diagnosed the race, implemented and reviewed
the patch and regression snippet, and ran the reported validation. The
runtime did not expose an exact model version.
Assisted-by: Codex:model-version-unavailable
* Handle bool needles and consolidate bytearray regression coverage
Include exact builtin bool in the callback-free integer membership path.
Keep int subclasses and generic conversion paths under export protection.
Move this PR's regression coverage into the existing bytearray snippet
and cover True/False membership as requested in review.
AI assistance: Codex/OpenAI implemented and independently reviewed the
review follow-up and ran the reported validation. The runtime did not
expose an exact model version.
Assisted-by: Codex:model-version-unavailable
Use the existing normal dump_traceback stop-the-world path on Windows before traversing raw interpreter frames. Preserve registry-lock release before resuming threads. Signal and watchdog paths are unchanged.
Assisted-by: OpenAI Codex:model identifier unavailable
Co-authored-by: dot <dot@youknowone.org>
Represent PyObjectRef through PyRef<PyObject> while preserving typed
ownership, payload projection, and drop behavior. Use the sealed target
selector for borrowed set/frozenset union views and typed tuple elements.
Keep tuple storage erased behind invariant typed slice views, with checked
conversions and reference-count ownership tests. Preserve exact tuple
identity for normalized nonempty full slices. Integrate the ownership
contract into the public object module documentation and retain focused
Rust ownership/layout tests without modifying bundled Lib sources.
Spell the set/frozenset union owner directly as PyRef<PyAnySet> without
a second owned alias; retain the sealed internal view registration.
Assisted-by: OpenAI Codex:model identifier unavailable
Sync enum and its regression tests from CPython v3.15.0rc2 (435c9e5a798c99653e3ab64ce29baed0e4f3dfee). Preserve the two existing RustPython expected-failure decorators. Keep this first migration slice limited to enum without changing the declared Python target or native runtime.
AI assistance: Codex/OpenAI reconstructed the upstream sync, reviewed the diff, and ran validation. The runtime did not expose the exact model version.
Assisted-by: Codex:model-version-unavailable
Co-authored-by: youknowdot <336763669+youknowdot@users.noreply.github.com>
Call shrink_to_fit on the result buffer in os.pread, os.getrandom,
WindowsConsoleIO.read, _winapi.PeekNamedPipe, _winapi.ReadFile,
_multiprocessing.recv and the openssl MemoryBIO.read.
Assisted-by: Claude:claude-opus-5-5
Assisted-by: Grok:grok-4.7
Capture Winsock failures with bounded atomic storage and report them through sys.unraisablehook on the interpreter thread. Honor warn_on_full_buffer for WSAEWOULDBLOCK. Include bounded Windows socket regressions without changing Unix or CRT wakeup writes.
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* Sync library behavior with CPython 3.15.0
Import exact d220409a13b77de7a6c30abe16ea90db01528edc sources through scripts/update_lib migrate, preserving the existing logging test marker. Retain focused Python license and mock property regressions outside Lib. This later Python-stage change requires native binascii wrapcol support; listener DNS runtime validation remains out of scope.
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* Keep the library update limited to upstream files
Remove the two PR-added extra_tests snippets as requested in review. Preserve the script-migrated CPython library files and their canonical tests unchanged.
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* Reject GenericAlias parameters added after caching
Validate stale cached parameters and retain the Python regression without obsolete reference prerequisites.
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* Compute GenericAlias parameters lazily for Python 3.15
Populate the parameter cache on first lookup or subscription. Preserve cached identity and outer lookup replacement, propagate descriptor failures, and release displaced parameters outside the cache lock. Add Python regressions for timing, retries, reentrancy, recursion and concurrent callbacks.
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* Check GenericAlias recursion at lazy parameter materialization
Align the existing cyclic and deeply nested fixtures with certified CPython 3.15. Keep RecursionError assertions, cover both parameter lookup and subscription on both interpreters, and retain the separate deep-hash regression.
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* Keep finite GenericAlias stack stress native-specific
Preserve shared cyclic recursion checks and all RustPython stress assertions. Finite acyclic depth is not a portable CPython C-stack limit across optimized builds.
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* Materialize union parameters lazily like GenericAlias
Share the reentrant-safe parameter cache between aliases and unions. Preserve parameter identity without applying union argument equality or flattening. Cover nested alias timing, descriptor retry, reentrant replacement, empty caches and concurrent callbacks in Python regressions checked against final CPython 3.15.
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* Consolidate union regressions in the typing snippet
Preserve all existing regression bodies and coverage while following the requested snippet organization.
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* Implement Python 3.15 Windows event-log APIs
Extract RegisterEventSource, DeregisterEventSource, ReportEvent and six constants from the existing Python 3.15 work. Match final CPython conversion and Win32 call contracts, with Windows-only argument rejection coverage that cannot perform host operations.
Assisted-by: OpenAI Codex:model identifier unavailable
* Match final unsigned event-log argument errors
Keep every pre-host rejection case and distinguish negative ValueError from positive OverflowError, as the final Python 3.15 Clinic converters do.
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* Rename Windows API regressions to the shared snippet
Preserve all existing regression bodies and coverage while following the requested snippet organization.
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* Implement Python 3.15 base64 encoding and decoding
Follow CPython 3.15.0 final d220409a13b77de7a6c30abe16ea90db01528edc for base64 options, alphabets, padding and canonical decoding. Keep reverse-table caches in traced module-native state and preserve module-bound callable semantics. Add bounded Python regressions without editing Lib.
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* Complete binascii codecs for canonical Python 3.15 tests
Migrate Lib/test/test_binascii.py unchanged from CPython 3.15.0 final using scripts/update_lib and replace the superseded custom base64 snippet. Implement the base32, Base85, Ascii85 and hex ignorechars APIs required by the canonical suite. Share the existing module-bound original-key alphabet cache across base32/base64/base85 and preserve argument and buffer cleanup semantics. Keep the existing base64 kernels and VM state integration unchanged.
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* Serialize bytearray exports with resizing
Keep descriptor acquisition and export retention under the bytearray read lock, and recheck exports after acquiring a resize lock. Guard initializer and sequence deletion writes, preserve zero-index initialization callbacks, and match RawIOBase.read buffer ownership without bypassing export checks.
Add bounded Python export-lifetime and concurrent decode/memoryview regression coverage.
Assisted-by: OpenAI Codex:model identifier unavailable
* Release bytearray initializer storage and check deletion indices
Reset initializer storage before zero-count callbacks and returns. Validate integer deletion indices with a nonblocking snapshot before export rejection where possible, then revalidate under the resize guard. Preserve fast export rejection when contended to avoid codec callback deadlocks.
Add Python regressions for exported-empty rejection, initializer capacity release, callback ordering, and ordinary deletion error precedence.
Assisted-by: OpenAI Codex:model identifier unavailable
* Fix bytearray concatenation buffer callback reentrancy
Acquire both operand exports before borrowing their bytes and release them in CPython order. Cover reentrant initialization, mutable callbacks and export cleanup through public concatenation APIs.
Assisted-by: OpenAI Codex:model identifier unavailable
* Stage bytearray buffer callbacks outside receiver locks
Keep operation-specific export and release ordering for comparisons, searches, affix tuples and translation. Resolve padding arguments before borrowing the receiver, and retain buffer owners through computation without holding bytearray locks across Python callbacks.
Add bounded Python regressions for callback mutation, reentrant initialization, lazy affixes, subclass protocols and ordered cleanup.
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* Consolidate bytearray regressions in the builtin snippet
Preserve all existing regression bodies and coverage while following the requested snippet organization.
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Use frame-aware getattr lookup consistently across descriptor and method reductions. Preserve defining types and exception order, and perform generic builtin-mapping subclass lookup only once.
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Support directory-relative FIFO creation. Retry interrupted path opens while releasing the interpreter and honoring signal-handler exceptions; preserve raw directory descriptors across callbacks.
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Resolve executable symlinks for virtual-environment paths while retaining macOS framework launcher behavior. Include directory-canonicalization and launcher regressions, using core for UTF-8 checks.
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Use native type names, None spelling, and UTF-8 byte precision for invalid name arguments without changing accepted strings or hashing behavior.
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Use index-sized conversion, preserve __index__ exceptions, and bound native type names to the UTF-8-safe diagnostic limit. Include in-memory blob read and write regressions without changing callback ownership.
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Retain raw element and attribute prefixes when namespace_separator is None. Keep expanded names and parser configuration unchanged, with regression coverage in the pyexpat snippet.
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Match native type names, None spelling, and UTF-8 byte limits while preserving removal behavior. Keep all six regression cases in the existing XML snippet.
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Restore the two-line fix from #9078 onto main after it was merged into the Python 3.15 staging branch.
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Check initialization and attachment before rejecting deletion, and use the final reference error message. Preserve initialized, uninitialized, detached, ASCII-subclass, and non-ASCII-subclass regression cases with their exact Python 3.15 outcomes. No bundled Lib files change.
Assisted-by: OpenAI Codex:model identifier unavailable
* Target Python 3.15 using the final upstream reference
Update active version and comparison configuration to Python 3.15.0. Preserve the alpha implementation status, actual bytecode format, and existing libraries pending separate migration. Align generated library-upgrade workflow pins without changing permissions or actions.
Assisted-by: OpenAI Codex:model identifier unavailable
* Adapt essential snippet contracts to Python 3.15 final
Preserve existing coverage while following verified final behavior for script metadata, builtin signatures and loading, AST fixture construction, memoryview diagnostics, mmap search bounds, and struct format errors. The unchanged final comparator exposes the earlier expectations; focused native baseline failures establish the required implementation changes.
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep final-reference regression paths and remove expired sysconfig argument
Preserve reverse multiplication syntax and native exact overflow diagnostics. Accept the two source-proven CPython 3.15 specialization messages only in affected reverse str/bytes/tuple cases. Use an actually out-of-range Windows datetime errno fixture. Remove the sysconfig check_home argument at its existing canonical 3.15 removal test boundary.
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* Keep README wording unchanged in Python 3.15 transition
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* Match Python 3.15 repetition specialization and keep universal tests
Use exact sequence-type guards and preserve generic fallback diagnostics. Validate both cold and warmed expressions without implementation-specific assertions. Reject stale CPython source checkouts and cross-version library caches.
Assisted-by: OpenAI Codex:model identifier unavailable
* Limit in-place specialization additions to exact sequence repetition
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* Keep subclass regression scoped to repetition dispatch
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* Provision final CPython 3.15 with pinned uv builds
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* Enforce Python 3.15 AST constructor requirements
Reject retired missing-field and arbitrary-keyword forms while preserving defaults and explicit placeholders. Sync only matching final CPython constructor test hunks.
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* Keep seeded Python ahead of its Windows DLL directory
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* Keep opcode metadata tied to the implemented bytecode format
The interpreter target and reference tests use Python 3.15.0, but the current Rust opcode enum retains the 3.14 bytecode format. Generate metadata from its matching source rather than importing unsupported instruction families.
Assisted-by: OpenAI Codex:model identifier unavailable
* Align CSV, logarithm and decimal formatting with Python 3.15
Propagate dialect lookup errors except AttributeError, retry integer logarithms after float overflow, and update the decimal conversion diagnostic. Exercise the final reference contracts without implementation-specific branches.
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* Bind the logarithm index result before borrowing its integer
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* Align required canonical test expectations with Python 3.15
Take only demonstrated contract changes from CPython v3.15.0, d220409a13b77de7a6c30abe16ea90db01528edc: removed module __cached__, Struct format exception classes, and decimal-format diagnostic. Preserve unrelated tests and expectations.
Assisted-by: OpenAI Codex:model identifier unavailable
* Track pending frozendict pickle support during the 3.15 transition
Keep the two existing frozendict pickle tests running as expected failures until #8951 supplies the builtin. Unexpected success will signal removal of these temporary markers.
Assisted-by: OpenAI Codex:model identifier unavailable
* Support final Python 3.15 Windows negative timestamps
Use FILETIME for pre-epoch conversions and preserve precise Windows timestamp errors.
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* Derive historical Windows timezone offsets from wall time
FILETIME reports historical DST as unknown, so calculate the actual offset rather than selecting standard-time bias.
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* Identify decimal formatting arguments in Python 3.15 errors
Track consumed positional arguments, including star width and precision, and preserve mapping key representations in decimal conversion diagnostics.
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* Reuse mapping format keys for lookup and error context
Assisted-by: OpenAI Codex:model identifier unavailable
* Borrow mapping diagnostic keys as Python objects
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* Avoid empty components in the reference Python library path
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* Isolate RustPython bytecode caches during the 3.15 transition
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* Sync final Windows timestamp test expectations
Import only the final CPython platform-limit guards and mktime roundtrip expectation required by the existing Windows CI suite.
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* Restore official Python setup for 3.15 final
Use the existing pinned setup-python action now that its official catalog supplies CPython 3.15.0. Remove the temporary standalone provisioning action and its sparse-checkout entry while retaining interpreter outputs and requested versions.
Assisted-by: OpenAI Codex:model identifier unavailable
* Align merged runtime contracts with Python 3.15 final
Restrict mappingproxy ordering, use final codec registry normalization, and prefer index conversion before float conversion for sleep. Retain universal Python assertions and import the matching final codec/time canonical test hunks plus the non-ASCII codec-name deprecation warning.
Upstream source: CPython d220409a13b77de7a6c30abe16ea90db01528edc. The existing codec normalization implementation and bytecode contract remain unchanged.
Assisted-by: OpenAI Codex:model identifier unavailable
* Limit Windows launcher version check to its interpreter
Exclude only the CPython py.exe version-identity case from RustPython CI. The installed launcher reports its own final version, while RustPython correctly remains alpha. Preserve the other 45 launcher cases and all RustPython version assertions without modifying Lib.
Assisted-by: OpenAI Codex:model identifier unavailable
---------
Co-authored-by: Jeong, YunWon <69878+youknowone@users.noreply.github.com>
* Preserve ParamSpec bounds as in Python 3.14.8
Extract the backported bound-validation removal and align the CPython reference pin to 3.14.8 so both snippet interpreters exercise the same contract.
Assisted-by: OpenAI Codex:model identifier unavailable
* Align TextIOWrapper chunk-size deletion with Python 3.14.8
The 3.14.8 reference pin exposes the Argument Clinic deletion guard moved before initialization and attachment checks by CPython 90a1f02b7da0c356d10a23f1faee7dc063f887ed. Preserve assignment checks and align the exact deletion error, including subclass type names.
Assisted-by: OpenAI Codex:model identifier unavailable
* Validate mmap assignments against current storage
Use the existing mapping guard for bounds and writes after argument conversion, including empty assignments. Match the Python 3.14.8 ordering while preserving export guards and ownership APIs.
Assisted-by: OpenAI Codex:model identifier unavailable
* Align mmap boundary regression with Python 3.14.8
Include the matching upstream GH-158027 test-data correction: use an integer RHS so the unchanged IndexError assertion checks index bounds after conversion. Preserve the runtime assignment and storage guards.
Assisted-by: OpenAI Codex:model identifier unavailable
---------
Co-authored-by: Jeong, YunWon <69878+youknowone@users.noreply.github.com>
Use the existing f-string body unparser for template interpolation format specs, while preserving the outer interpolation source text. Add compile-only Python annotation-constant coverage.
Assisted-by: OpenAI Codex:model identifier unavailable
Match Python 3.14 by excluding coroutine-marked generator expressions from builtin call optimization. Reuse the existing cursor-preserving comprehension lookup so nested outer iterable scopes do not select the wrong symbol table; propagate lookup errors.
Assisted-by: OpenAI Codex:model identifier unavailable
Match the Python 3.14 wrapper type flag and enable the existing guarded method-call fast path. Keep the partial vectorcall changes separate.
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Only lazy aliases may obtain their module from the evaluation function. Eager aliases without a caller __name__ must not inspect their stored value.
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Keep the existing conversion and initialization path while binding format as positional-or-keyword, matching Python 3.14.
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Preserve CPython signed nanosecond conversion precedence for reentrant and nonblocking acquisition, without changing the platform timeout maximum.
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Preserve the wrapper-pickle regressions merged into main while refreshing the independent length checks.
Assisted-by: OpenAI Codex:model identifier unavailable
* Track live entries in reverse dictionary iterators
Extract the Python 3.14-compatible remaining-count and same-size storage handling from #8954. Preserve the older deferred exhaustion and extra-yield contract, using explicit wrapping arithmetic rather than the Python 3.15 extra-yield error and cursor clamp. Cover deleted-slot hints and mutation after the last yield in the existing Python snippet.
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* Enable the repaired reverse-dict restoration regression
The patched native interpreter unexpectedly passes the existing reverse-dict clear/restore test. Remove only its obsolete expected-failure decorator, preserving the canonical assertions and all other markers.
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* Preserve reverse iterator invalidation on atomic relocation
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Extract the startup import_site guard from #8954. Preserve existing logging and comments, and cover the missing sys.modules behavior under -S in the existing sys snippet.
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Follow up on #9055: RustPython targets abi3t, which does not require this legacy binary-compatibility entry point.
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Extract the Python 3.14-compatible descriptor slot dispatch from #8954. Call the raw type attribute with descriptor, instance and owner, preserving ownership and recursion handling. Extend the existing Python snippet for staticmethod, classmethod, callable-object and ordinary __get__ replacements.
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* Preserve reflected addition for native sequence subclasses
Extract the Python 3.14-compatible sequence-add slot distinction from #8954 without its unconditional numeric-slot clearing. Preserve stateful duplicate-slot behavior, exact descriptor identity, inherited reflected priority and a stable wrapper function address. Extend the existing addition snippet only for the uncovered inherited-native and slot-update cases.
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* Use stored MRO for sequence descriptor ownership
Assisted-by: OpenAI Codex:model identifier unavailable
Extract the Python 3.14-compatible signed timestamp conversion from #8954, preserving floor rounding, float-or-index argument rules and signed divmod remainders. Reuse the existing Windows file-time helper rather than the mega patch range restriction, and keep the 3.14 argument diagnostics. Add three concise parser regressions to the existing os snippet without native filesystem range assumptions.
Assisted-by: OpenAI Codex:model identifier unavailable
dot