f5685a266b
gh-80620: Support negative timestamps on windows in time.gmtime, time.localtime, and datetime module ( #143463 )
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Previously, negative timestamps (representing dates before 1970-01-01) were
not supported on Windows due to platform limitations. The changes introduce a
fallback implementation using the Windows FILETIME API, allowing negative
timestamps to be correctly handled in both UTC and local time conversions.
Additionally, related test code is updated to remove Windows-specific skips
and error handling, ensuring consistent behavior across platforms.
Co-authored-by: Victor Stinner <vstinner@python.org >
2026-01-15 10:51:11 +01:00
794f758cd8
gh-141504: Refactor policy object into a single opt_config (gh-143644)
2026-01-15 09:53:00 +09:00
499706b843
GH-143842: Make optimizer color table static (GH-143846)
2026-01-14 20:37:13 +00:00
e370c8db52
gh-143123: Protect against recursive tracer calls/finalization (GH-143126)
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* Stronger check for recursive traces
* Add a stop_tracing field
* Stop early when tracing exceptions
2026-01-14 12:23:14 +00:00
6db952eae9
GH-143613: Add colours and some more edges to executor visualization graph (GH-143809)
2026-01-14 11:34:58 +00:00
ce8f5f98c6
gh-106287: Do not write objects after an unmarshalling error (GH-132715)
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Writing out an object may involve a slot lookup, which is not safe to do with
an exception raised. In debug mode an assertion failure will occur if this
happens.
2026-01-14 11:25:46 +00:00
94dbce1397
gh-138050: Use cold flag instead of warm flag in MAKE_WARM (GH-143827)
2026-01-14 10:27:33 +00:00
2873c31edf
gh-131798: JIT optimizer: Support custom binary op and property frames (GH-143735)
2026-01-13 19:11:53 +00:00
c556786b8b
gh-134584: Eliminate redundant refcounting in TO_BOOL_INT, TO_BOOL_LIST (GH-143759)
2026-01-12 21:56:26 +00:00
e535bdb0a2
gh-134584: Eliminate redundant refcounting from _CONTAINS_{OP|OP_SET|OP_DICT} (GH-143731)
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Signed-off-by: Manjusaka <me@manjusaka.me >
2026-01-12 15:47:31 +00:00
054a565c64
gh-134584: JIT: Remove redundant refcount for _BINARY_OP_SUBSCR_DICT (GH-143724)
2026-01-12 14:13:55 +00:00
548526bbbe
gh-134584: JIT: Remove redundant refcounting for UNARY_{INVERT|NEGATIVE} (GH-143704)
2026-01-11 20:42:55 +00:00
ce6bae92da
gh-143377: fix crashes in _interpreters.capture_exception ( #143418 )
2026-01-10 12:37:54 +01:00
e2f0160026
gh-143604: Hold strong reference to executor during JIT tracing (GH-143646)
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Co-authored-by: Ken Jin <kenjin4096@gmail.com >
2026-01-10 11:15:48 +00:00
95259116ec
gh-142764: Restore REPLACE_OPCODE_IF_EVALUATES_PURE optimization for some ops (GH-143335)
2026-01-09 23:18:22 +00:00
e0fb278064
gh-143421: Allocate all JIT state in one go (GH-143626)
2026-01-09 19:00:49 +00:00
b852236b26
gh-143421: Lazily allocate tracer code and opt buffers (GH-143597)
2026-01-09 16:56:19 +00:00
a4086d7f89
gh-142829: Fix use-after-free in Context.__eq__ via re-entrant ContextVar.set ( #142905 )
2026-01-09 17:57:34 +05:30
39a2bcf949
gh-143547: Fix PyErr_FormatUnraisable() fallback ( #143557 )
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Hold a strong reference to 'hook' while calling the default
unraisable took to log hook failure.
Fix test_sys.UnraisableHookTest: use the right decorator function to
disable colors. Previously, tests were always skipped.
2026-01-09 13:16:22 +01:00
aeb3403563
gh-143421: Move JitOptContext from stack allocation to per-thread heap allocation (GH-143536)
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* move JitOptContext to _PyThreadStateImpl
* make _PyUOpInstruction buffer a part of _PyThreadStateImpl
Co-authored-by: Kumar Aditya <kumaraditya@python.org >
2026-01-08 19:38:21 +00:00
8cf5c4d89a
gh-142908: Don't use DK_IS_UNICODE in interpreter (gh-142909)
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`DK_IS_UNICODE()` includes split keys and we don't want to specialize on
those accesses..
2026-01-08 09:32:20 -05:00
f11f5ebfe6
gh-129824: Fix data race on runtime->gilstate.check_enabled (gh-143530)
2026-01-07 17:56:14 -05:00
bfc3d8d77f
gh-143531: Use macro to check if PEP 523 is hooked ( #143532 )
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Use macro to check if PEP 523 is hooked
2026-01-07 13:26:19 -08:00
0a5c04a5ce
gh-134584: Eliminate redundant refcounting from TO_BOOL_STR (GH-143417)
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Signed-off-by: Manjusaka <me@manjusaka.me >
2026-01-06 21:11:53 +00:00
df355348f0
gh-142982: Specialize CALL_FUNCTION_EX (GH-143391)
2026-01-06 20:34:08 +00:00
74bb3ca1f8
gh-142863: optimize list and set calls with generator expressions ( #142864 )
2026-01-06 23:23:28 +05:30
90c44bc803
gh-131798: Support generator frames in the JIT optimizer (GH-143340)
2026-01-06 16:39:57 +00:00
faa3dc7c64
gh-143469: enable LOAD_ATTR_MODULE specialization even if __getattr__ is defined ( #143470 )
2026-01-06 22:09:18 +05:30
54f1ed0299
gh-134584: Eliminate redundant refcounting in TO_BOOL_ALWAYS_TRUE (GH-143427)
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Co-authored-by: Ken Jin <kenjin@python.org >
2026-01-06 16:11:56 +00:00
841b7482dd
gh-143424: Fix assertion in _PyMutex_LockTimed (gh-143439)
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The assertion doesn't necessarily hold for `threading.Lock`, so allow
the lock to be unlocked if `_PY_LOCK_PYTHONLOCK` is set on the flags.
2026-01-06 09:40:14 -05:00
4d21297d28
gh-41779: Allow defining any __slots__ for a class derived from tuple (GH-141763)
2026-01-06 11:36:00 +02:00
d6f77e6a3f
gh-116738: make entering of contextvars.Context thread safe ( #143074 )
2026-01-06 12:24:02 +05:30
7a572d9f21
gh-143108: Don't instrument some faulthandler related functions for TSan ( #143450 )
2026-01-05 22:13:29 +01:00
e6bfe4d886
gh-139757: Add BINARY_OP_SUBSCR_USTR_INT (GH-143389)
2026-01-04 14:14:27 +00:00
6116d70bbd
gh-143403: Fix a UAF in _BINARY_OP_INPLACE_ADD_UNICODE (GH-143404)
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Fix a UAF in `_BINARY_OP_INPLACE_ADD_UNICODE`
2026-01-04 13:10:39 +00:00
12283f6373
gh-141504: Factor out tracing and optimization heuristics into a single object (gh-143381)
2026-01-03 15:22:14 +00:00
6d05e55de0
Fix dunder name typo in compiler code comment ( #143374 )
2026-01-03 10:08:42 +00:00
b538c2832d
gh-143361: Pass PY_VECTORCALL_ARGUMENTS_OFFSET in _Py_CallBuiltinClass_StackRefSteal (GH-143367)
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Co-authored-by: Aaron Wieczorek <woz@Aarons-MacBook-Pro.local >
2026-01-02 20:43:00 +00:00
f7a03bb944
gh-134584: JIT: Remove redundant refcount from STORE_FAST (GH-143336)
2026-01-02 18:22:21 +00:00
61f2ad9a3a
gh-139757: Fix unintended bytecode specialization for non-ascii string (gh-143352)
2026-01-02 14:05:08 +00:00
315f474d11
gh-139757: Add _GUARD_NOS_COMPACT_ASCII for compact ascii optimization (gh-143332)
2026-01-02 20:58:14 +09:00
d00d39f58e
gh-134584: Eliminate redundant refcounting from _LOAD_ATTR_SLOT (GH-143320)
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Signed-off-by: Manjusaka <me@manjusaka.me >
Co-authored-by: Ken Jin <kenjin4096@gmail.com >
2026-01-01 17:27:02 +00:00
1fb8e0eb51
gh-134584: Eliminate redundant refcounting from _CALL{_BUILTIN_O, _METHOD_DESCRIPTOR_O} (GH-143330)
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Co-authored-by: Ken Jin <kenjin4096@gmail.com >
2026-01-01 17:25:38 +00:00
6cb245d260
gh-143183: Link trace to side exits, rather than stop (GH-143268)
2025-12-29 15:10:42 +00:00
f37f57dfe6
gh-131421: Fix ASDL kw_defaults being expr* instead of expr?* (GH-133773)
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Also fix docs ASDL highlighting.
2025-12-29 13:43:09 +02:00
daa9aa4c0a
gh-143183: Rewind stop tracing to previous target (GH-143187)
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Co-authored-by: Kumar Aditya <kumaraditya@python.org >
2025-12-28 22:12:31 +00:00
713684de53
gh-131798: Remove bounds check when indexing into tuples with a constant index ( #137607 )
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* Remove bounds check when indexing into tuples with a constant index
* Add news entry
* fixup after rebase
2025-12-28 22:06:06 +01:00
3ccc76f036
gh-143228: Fix UAF in perf trampoline during finalization ( #143233 )
2025-12-28 13:50:23 +00:00
3a728e5f93
gh-131591: Do not free page caches that weren't allocated ( #143205 )
2025-12-27 13:38:11 +00:00
a1c6308346
gh-134584: Eliminate redundant refcounting from IS_OP (GH-143171)
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Eliminate redundant refcounting from IS_OP
2025-12-26 20:30:02 +00:00
Peter Gessler