Use the explicit 64-bit CRT ABI regardless of libc time_t width, and preserve 64-bit FILETIME seconds throughout stat producers and consumers. Add bounded Windows regressions for 2040 calendar and stat conversions while retaining existing historical timestamps and error behavior.
AI assistance: OpenAI Codex implemented and independently source-reviewed this split, prepared bounded Python regressions and performed cross-target compile checks. Windows runtime and human manual testing are not claimed.
Assisted-by: OpenAI Codex:model version 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.
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep README wording unchanged in Python 3.15 transition
Assisted-by: OpenAI Codex:model identifier unavailable
* 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
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep subclass regression scoped to repetition dispatch
Assisted-by: OpenAI Codex:model identifier unavailable
* 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.
Assisted-by: OpenAI Codex:model identifier unavailable
* Keep seeded Python ahead of its Windows DLL directory
Assisted-by: OpenAI Codex:model identifier unavailable
* 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.
Assisted-by: OpenAI Codex:model identifier unavailable
* Bind the logarithm index result before borrowing its integer
Assisted-by: OpenAI Codex:model identifier unavailable
* 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.
Assisted-by: OpenAI Codex:model identifier unavailable
* 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.
Assisted-by: OpenAI Codex:model identifier unavailable
* 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.
Assisted-by: OpenAI Codex:model identifier unavailable
* Reuse mapping format keys for lookup and error context
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* 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.
Assisted-by: OpenAI Codex:model identifier unavailable
* 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>
* Cover Windows time conversion error classes
Require OSError with EINVAL for representable timestamps rejected by the Windows C runtime, while preserving OverflowError for float(2**63). This initial regression-only commit intentionally exposes the current Windows error mapping before the implementation follows.
AI assistance covered source comparison, regression design, and automated Linux baseline/reference controls. Native Windows results are pending. No human validation is claimed.
Assisted-by: Codex:model-version-unavailable
* Record native Windows time conversion outcomes
The first hosted regression run failed on CPython 3.14.7 as well as RustPython because a presumed-invalid CRT timestamp succeeded. Add bounded diagnostics before the unchanged assertions to capture full version/build metadata and every conversion result, including negative half-day controls. No implementation or canonical test changes are included.
The existing time snippet still passes the repository pytest runner on Linux CPython 3.14.7 and the current RustPython baseline. Native diagnostic results remain pending.
Assisted-by: Codex:model-version-unavailable
* Use the observed UCRT rejection boundary in time regression
Hosted Windows diagnostics show that CPython 3.14.7 and RustPython both accept gmtime(-1) and gmtime(-43200), while -86400 is rejected by all three converters. Correct only the newly added shared negative test value. CPython raises OSError(errno 22) for every selected rejected value, while the RustPython baseline raises OverflowError. Canonical tests and the recorded diagnostics remain unchanged.
The existing snippet passes both Linux reference and baseline controls. Assisted source investigation and automated verification used no manual validation.
Assisted-by: Codex:model-version-unavailable
* Preserve Windows CRT time conversion errors
Return CRT errno failures from the Windows calendar helpers and translate them to Python OSError. Adapt the datetime caller while retaining its Unix behavior. Use an exclusive signed float upper bound so float(2**63) still raises OverflowError before reaching the CRT.
Keep Windows negative-time FILETIME fallback and time64 ABI changes outside this Python 3.14 extraction. Existing datetime local-error coverage is retained and a UTC error control is added for the observed rejected timestamp -86400.
Hosted native diagnostics prove CPython 3.14.7 raises OSError(errno 22) where the baseline raises OverflowError. Windows-GNU host_env check and warnings-denied Clippy pass. Selected canonical datetime and complete time/datetime snippet Linux controls pass, with six existing baseline canonical skips. Fixed native Windows verification remains pending CI.
AI assistance covered source comparison, implementation, regression design, and automated verification. No manual validation is claimed.
Assisted-by: Codex:model-version-unavailable
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