10 Commits
Author SHA1 Message Date
youknowdot 1b20f6a194 Use 64-bit timestamps for Windows CRT and FILETIME conversions (#9116)
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
2026-10-15 00:57:58 +09:00
youknowdotandJeong, YunWon 06007c81fa Begin the Python 3.15 target and essential-library migration (#8950)
* 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

Assisted-by: OpenAI Codex:model identifier unavailable

* 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

Assisted-by: OpenAI Codex:model identifier unavailable

* Borrow mapping diagnostic keys as Python objects

Assisted-by: OpenAI Codex:model identifier unavailable

* Avoid empty components in the reference Python library path

Assisted-by: OpenAI Codex:model identifier unavailable

* Isolate RustPython bytecode caches during the 3.15 transition

Assisted-by: OpenAI Codex:model identifier unavailable

* 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>
2026-10-11 12:57:49 +09:00
youknowdot eb162b4b5b Decode strftime locale output through wide characters (#9050)
Assisted-by: OpenAI Codex:model identifier unavailable
2026-10-10 13:10:07 +00:00
youknowdot 146bb809bb Validate sleep against signed nanosecond time bounds (#9051)
Assisted-by: OpenAI Codex:model identifier unavailable
2026-10-10 12:52:23 +00:00
youknowdot 87aedfb7c5 Preserve Windows time conversion error classes (#9022)
* 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
2026-10-10 00:41:40 +09:00
Jeong, YunWon d5d19e0611 Fix 33 reproduced fuzzing and static-review defects (#8514)
* mmap: guard move() against dest/src past the mapping size

An offset larger than the mapping made `size - dest` underflow, producing
an out-of-range slice index panic. Check the high side first, as write() does.

Assisted-by: Claude

* exceptions: keep ImportError name/path/name_from out of an empty instance dict

ImportError.__reduce__ unwrapped get_arg(0), which is None when the exception
was constructed with no positional argument, aborting on pickle.dumps(ImportError()).
Fall back to the full args tuple there, and expose name/path/name_from as class
attributes defaulting to None so a bare ImportError() reduces to (cls, ()).

Assisted-by: Claude

* asyncio: stop unwrapping the _current_tasks downcast in current_task()

_asyncio._current_tasks is a reassignable module attribute; the three sibling
functions already degrade gracefully when it is not a dict, current_task() did not.

Assisted-by: Claude

* asyncio: raise TypeError when FutureIter.throw()'s exception class returns a non-exception

exc_type.call() goes through a Python-controlled __new__, so its result can be
any object; the downcast was unwrapped. Report it as a TypeError instead.

Assisted-by: Claude

* sequence: use a fallible reservation for sequence repetition

The guard only rejects a repeat whose per-element size crosses MAX_MEMORY_SIZE,
so (1,) * (10**12) still reached Vec::with_capacity and aborted in the allocator.
Reserve fallibly and surface a MemoryError.

Assisted-by: Claude

* collections: reject an oversized deque repetition with MemoryError

deque * sys.maxsize reached the allocator and aborted with a capacity overflow.
Apply the MAX_MEMORY_SIZE guard the other sequences already carry.

Assisted-by: Claude

* itertools: raise OverflowError for an out-of-range r argument

combinations/combinations_with_replacement/permutations narrowed r with
to_usize().unwrap(), so r=2**64 panicked instead of raising.

Assisted-by: Claude

* math: stream the generic sumprod path instead of collecting both iterables

The big-int path collected each argument into a Vec before multiplying, so an
unbounded iterable exhausted memory. Advance both iterators in lockstep and
accumulate, reporting a length mismatch when only one is exhausted.

Assisted-by: Claude

* _imp: raise TypeError for a second positional argument to find_frozen

withdata is keyword-only and unimplemented; passing it positionally hit an
unimplemented!() and aborted.

Assisted-by: Claude

* _typing: check _idfunc arity before indexing args

_typing._idfunc() with no argument indexed args[0] out of bounds.

Assisted-by: Claude

* exceptions: require a sequence for the ExceptionGroup excs argument

The argument was collected before being validated, so an unbounded iterable
such as itertools.count() exhausted memory. Reject a non-sequence up front.

Assisted-by: Claude

* mmap: treat an inverted find/rfind range as empty

find(b"x", 5, 2) built a slice whose start exceeded its end and panicked.

Assisted-by: Claude

* collections: give deque and defaultdict a GC traverse

Neither type opted into traversal, so a reference cycle through a deque or a
defaultdict was never collected.

Assisted-by: Claude

* itertools: opt the iterator types into GC traverse

cycle and its siblings hold Python references but declared no traverse, so a
cycle built through one of them leaked.

Assisted-by: Claude

* _ctypes: mask an out-of-range int instead of panicking

c_char_p(2**64) and pointer item assignment called .expect() on the narrowing
conversion. Wrap the value to the target width, which is what the C
implementation stores.

Assisted-by: Claude

* hashlib: import _hashlib when a hash module is loaded

The hash object type is a static type owned by _hashlib; calling _md5.md5()
without _hashlib imported hit an uninitialized static type and panicked.

Assisted-by: Claude

* _csv: fall back to the built-in dialect defaults when none is registered

The dialect table is empty until csv.py registers 'excel', so _csv.reader([])
unwrapped a missing entry and panicked.

Assisted-by: Claude

* builtins: reject surrogates in compile()/eval() source instead of panicking

expect_str() panics on a str containing surrogates; convert with try_as_utf8
so eval(chr(0xd800)) raises.

Assisted-by: Claude

* _suggestions: require a list for _generate_suggestions candidates

The argument was collected before validation, so an unbounded iterable
exhausted memory.

Assisted-by: Claude

* lzma: size the filter chain before consuming it

filters= was collected into a Vec before the length check, so an unbounded
iterable exhausted memory. Take the length through the sequence protocol first.

Assisted-by: Claude

* classmethod: opt into GC traverse

staticmethod already declares traverse; classmethod did not, so a cycle through
the wrapped callable leaked.

Assisted-by: Claude

* posix: reject unbounded iterables in posix_spawn and setgroups

argv, setsigdef, setsigmask and setgroups bound an ArgIterable and collected it
before validating, so an infinite generator exhausted memory. Require a
list/tuple for argv, validate signals while streaming, and take setgroups
through the sequence protocol.

Assisted-by: Claude

* _ctypes: size Array slice assignment and _argtypes_ before collecting

Both eagerly collected their argument, so an unbounded iterable exhausted
memory before the length check ran.

Assisted-by: Claude

* sys: propagate the breakpointhook warning failure

warn() was unwrapped, so an unimportable $PYTHONBREAKPOINT under
-W error panicked instead of raising.

Assisted-by: Claude

* structseq: require the sequence argument when constructing a struct sequence

A no-argument construction produced an empty backing tuple, and reading any
named field then indexed out of bounds.

Assisted-by: Claude

* Guard the hash slot dispatch against unbounded recursion

`PyObject::hash` invoked the type's hash slot directly, so an element-wise
`__hash__` following a deeply nested object graph recursed one native frame
per level and overflowed the stack. Wrap the dispatch in `with_recursion`,
matching the repr and rich-compare dispatches in the same file, so
`hash(x)` on a nested tuple/GenericAlias/slice raises `RecursionError`.

Assisted-by: Claude

* genericalias: guard the __parameters__ walk against unbounded recursion

`make_parameters_from_slice` recursed into every list/tuple argument with
nothing counting the frames, so `list[L]` for a self-referential or deeply
nested `L` overflowed the native stack at subscript time. Wrap the descent
in `with_recursion`, which makes the walk fallible; `PyGenericAlias::new`,
`from_args` and `make_parameters` now return `PyResult` and every caller
propagates.

Assisted-by: Claude

* Fix the type confusion in PyAtomicRef's Debug impl

`PyAtomicRef<T>` stores a pointer to a `Py<T>`, as `Deref`, `load_raw`,
`swap` and `Drop` all read it, but `Debug` cast it to a bare `T` and
formatted the object header as payload bytes. For `PyFunction`, whose
`code: PyAtomicRef<PyCode>` has a pointer-chasing `Debug`, that
dereferenced header words and segfaulted.

Cast to `PyObject` instead, which is what `Drop` already does and which
also covers the `PyAtomicRef<PyObject>` and `PyAtomicRef<Option<T>>`
instantiations that have no `Py<T>`.

`_asyncio._enter_task` reached this through `{:?}` in its "Cannot enter
into task" message; format the two tasks with their Python repr, which is
what the message is meant to show.

Assisted-by: Claude

* _sre: disallow instantiating Match

`Match` inherited `object.__new__`, so `M.__new__(M)` produced an instance
whose `regs`/`string`/`pattern` were never filled in by a match run; the
mapping subscript path read them and dereferenced garbage. The type has no
public constructor, so mark it `DISALLOW_INSTANTIATION`, which makes
`M.__new__(M)` raise `TypeError: cannot create 're.Match' instances`.

Assisted-by: Claude

* utils: return the empty repr instead of asserting a non-empty collection

`collection_repr` took the first element with an `.expect()` justified by the
caller's preceding non-empty check. Another thread clearing the collection
between that check and the iteration made the iterator yield nothing and
panicked the worker. Fall back to the caller-supplied empty form, which is
the text those callers already produce for an empty collection.

Assisted-by: Claude

* itertools: advance cycle's index atomically

`cycle.__next__` did `fetch_add(1)` and then reset the index to 0 in a
separate store, so two threads replaying the saved items could both read an
index past the end of `saved` and panic on the slice access. Do the advance
and the wrap in one `fetch_update`.

Assisted-by: Claude

* _ctypes: reject a float argument to a foreign call without argtypes

`conv_param`, the conversion used when `argtypes` is not set, converted its
argument with `try_int`, which goes through `__int__` and so accepts a
float. `libc.strlen(1.5)` therefore passed 1 where the callee expects a
`char *` and the callee dereferenced it. Match `ConvParam`, which does a
`PyLong_Check` and converts nothing: take the branch only for an `int` (or
a subclass, so `True` still converts), and let a float fall through to
"Don't know how to convert parameter".

The branch below it converted a float to a C double, but `try_int` claimed
every float before it could run, so it was dead; `CArgValue::Double`
existed only for that branch and both go. Typed doubles are unaffected —
they travel as `CArgValue::Typed` with code 'd'.

Assisted-by: Claude

* Report the iterator itself from PyIter's traverse

`Traverse for PyIter<O>` delegated to the inherent `PyObject::traverse` of
the object it wraps, so it reported that iterator's referents instead of
the iterator. The iterator's own reference to those referents was then
never subtracted during the collector's reference-subtraction pass, the
referents kept a non-zero gc_refs, and every object reachable from them
was classified as a root.

Any cycle running through a type with a `PyIter` field therefore survived
collection: `map`, `filter`, `zip`, `enumerate`, `reversed` and the
`itertools` iterators all leaked, while the same cycle through a `list`,
`tuple` or `list_iterator` collected. Report the wrapped object, as the
`PyObjectRef`, `PyRef<T>` and `PyStackRef` impls do.

`itertools.tee` still leaks: its shared buffer is a `PyRc<PyItertoolsTeeData>`
rather than a Python object, so the collector cannot see through it.

Assisted-by: Claude

* Remove the obsolete expectedFailure on test_code_module.test_unicode_error

Compiling a source string containing a lone surrogate now raises
UnicodeEncodeError, so the test passes.

Assisted-by: Claude

* itertools: reserve the combination indices fallibly

`combinations` and `combinations_with_replacement` built their index vector
with an infallible allocation, so an `r` that passes the ssize_t check but
does not fit in memory aborted the process instead of raising MemoryError.

Assisted-by: Claude

* Apply the struct sequence constructor's dict argument

`structseq(sequence, dict)` discarded its second argument, so the hidden
fields past `n_sequence_fields` — `tm_zone`, `st_atime` and friends — were
always None when constructed directly or restored from a `(sequence, dict)`
pickle, and a non-dict second argument was accepted silently.

Take the dict, require it to be a dict, and fill the hidden slots the
sequence did not cover from it. A key that names a field the sequence
already supplied, or no field at all, is now a
"got duplicate or unexpected field name(s)" TypeError instead of being
dropped. Both arguments are bindable by name, as `sequence` and `dict`.

`os.stat_result` and `os.statvfs_result` did not accept a second argument
at all; they and `time.struct_time` now share the parsing.

Assisted-by: Claude

* _imp: report the argument count in find_frozen's arity error

Assisted-by: Claude

* Add regression tests for the reproduced crashers

One case per catalog entry, each asserting the behavior the fix produces:
recursion guards, the memory-unsafety sites, the overflow and unbounded
allocation guards, the eager-collection rejections, the unwrap sites, and
the cycles the collector now breaks. Every expected value was checked
against CPython 3.14.

Assisted-by: Claude

* Tolerate a changed-size RuntimeError in the set repr stress test

The mutator and reader threads race on purpose; a "changed size during
iteration" RuntimeError is a valid outcome of that race and should not fail
the test. The panic it guards against is not.

Assisted-by: Claude

* Move the crash regression tests into per-module snippets

crash_regressions.py collected every reproduced crasher in one file. Split it
into the snippet for the module each case exercises, and add stdlib_gc.py,
stdlib_asyncio.py, stdlib_lzma.py, stdlib_threading_set_repr.py and
stdlib_threading_itertools_cycle.py for the cases with no existing home.

The suite runs every snippet under the host CPython too, so the checks only
RustPython raises are guarded by sys.implementation.name: the hash and
__parameters__ recursion depth, and the deque repeat overflow. The float
ctypes argument accepts either TypeError or ctypes.ArgumentError.

Assisted-by: Claude
2026-08-14 00:57:10 +09:00
Jiwoo Ahn 71a406898c wasi: support monotonic / perf time (#8385)
Assisted-by: Codex:GPT-5.6 Sol

Signed-off-by: Jiwoo Ahn <ikwydls1314@gmail.com>
2026-07-29 20:33:32 +09:00
Changjoon ebb3253458 Fix struct_time field overflow to raise OverflowError in time module (#7627)
* Fix struct_time field overflow to raise OverflowError in time module

* Address CodeRabbit review: cover tm_gmtoff and chain AssertionError

* Fix ruff format: single space before inline comment
2026-04-19 22:32:57 +09:00
Rex Ledesma 4e2e0b41c6 chore: add ruff format --check (#5774)
* chore: add `ruff format --check`

* fix tests
2025-05-12 14:20:01 +09:00
Jeong YunWon e62a164f4d Move tests -> extra_tests 2020-09-13 06:58:57 +09:00