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Emma Smith a8edca62fc gh-132835: Add defensive NULL checks to MRO resolution (GH-134763) 
Currently, there are a few places where tp_mro could theoretically
become NULL, but do not in practice. This commit adds defensive checks for
NULL values to ensure that any changes do not introduce a crash and that
state invariants are upheld.

The assertions added in this commit are all instances where a NULL value would get passed to something not expecting a NULL, so it is better to catch an assertion failure than crash later on.

There are a few cases where it is OK for the return of lookup_tp_mro to be NULL, such as when passed to is_subtype_with_mro, which handles this explicitly.
2025-10-21 14:48:29 -07:00
..
clinic
gh-139817: Attribute __qualname__ is added to TypeAliasType (#139919)
2025-10-15 09:08:17 -07:00
mimalloc
…
stringlib
gh-139353: Rename formatter_unicode.c to unicode_formatter.c (#139723)
2025-10-08 14:56:00 +02:00
abstract.c
gh-130821: Add type information to error messages for invalid return type (GH-130835)
2025-08-14 11:04:41 +03:00
boolobject.c
…
bytearrayobject.c
gh-129559: Remove extra dot in bytearray.resize AC (#140134)
2025-10-15 02:39:17 +00:00
bytes_methods.c
gh-129813, PEP 782: Use PyBytesWriter in _Py_bytes_maketrans() (#139044)
2025-09-17 17:43:30 +02:00
bytesobject.c
gh-140061: Use _PyObject_IsUniquelyReferenced() to check if objects are uniquely referenced (gh-140062)
2025-10-15 09:48:21 -04:00
call.c
gh-111489: Remove _PyTuple_FromArray() alias (#139973)
2025-10-11 22:58:14 +02:00
capsule.c
…
cellobject.c
…
classobject.c
gh-135607: remove null checking of weakref list in dealloc of extension modules and objects (#135614)
2025-06-30 11:14:31 +00:00
codeobject.c
gh-138661: fix data race in PyCode_Addr2Line (#138664)
2025-09-12 18:04:55 +05:30
complexobject.c
GH-137623: Use an AC decorator for docstring line length enforcement (#137690)
2025-08-18 18:29:00 +01:00
descrobject.c
gh-111489: Remove _PyTuple_FromArray() alias (#139973)
2025-10-11 22:58:14 +02:00
dictnotes.txt
…
dictobject.c
gh-140061: Use _PyObject_IsUniquelyReferenced() to check if objects are uniquely referenced (gh-140062)
2025-10-15 09:48:21 -04:00
enumobject.c
gh-137609: Change names of some positional-only parameters in builtins (GH-137611)
2025-08-25 15:36:06 +03:00
exceptions.c
gh-111489: Remove _PyTuple_FromArray() alias (#139973)
2025-10-11 22:58:14 +02:00
fileobject.c
gh-130821: Add type information to error messages for invalid return type (GH-130835)
2025-08-14 11:04:41 +03:00
floatobject.c
GH-137623: Use an AC decorator for docstring line length enforcement (#137690)
2025-08-18 18:29:00 +01:00
frameobject.c
GH-137623: Use an AC decorator for docstring line length enforcement (#137690)
2025-08-18 18:29:00 +01:00
funcobject.c
gh-139924: Add PyFunction_PYFUNC_EVENT_MODIFY_QUALNAME event for function watchers (#139925)
2025-10-10 15:25:38 -07:00
genericaliasobject.c
gh-138479: Ensure that __typing_subst__ returns a tuple (GH-138482)
2025-09-11 06:39:09 -04:00
genobject.c
gh-138902: Fix generator send arg name (#138905)
2025-09-15 14:05:36 +03:00
interpolationobject.c
gh-132661: Add default value (of "") for Interpolation.expression (#136441)
2025-07-10 16:27:41 +02:00
iterobject.c
gh-130821: Add type information to error messages for invalid return type (GH-130835)
2025-08-14 11:04:41 +03:00
listobject.c
gh-140009: Improve performance of list_extend_dictitems by using PyTuple_FromArray (#140010)
2025-10-13 15:58:25 +05:30
listsort.txt
…
lnotab_notes.txt
…
longobject.c
gh-140061: Use _PyObject_IsUniquelyReferenced() to check if objects are uniquely referenced (gh-140062)
2025-10-15 09:48:21 -04:00
memoryobject.c
gh-129813, PEP 782: Use PyBytesWriter in memoryview (#138836)
2025-09-13 18:36:05 +02:00
methodobject.c
gh-135607: remove null checking of weakref list in dealloc of extension modules and objects (#135614)
2025-06-30 11:14:31 +00:00
moduleobject.c
gh-137956: Guard against non-free-threaded extensions in free-threaded builds (GH-137957)
2025-09-15 11:24:16 +00:00
namespaceobject.c
gh-136193: Improve TypeError msg when comparing two SimpleNamespaces (#136195)
2025-07-02 14:32:41 +03:00
object_layout_312.gv
…
object_layout_312.png
gh-71648: Optimize PNG files (GH-138842)
2025-09-12 20:13:05 +00:00
object_layout_313.gv
…
object_layout_313.png
gh-71648: Optimize PNG files (GH-138842)
2025-09-12 20:13:05 +00:00
object_layout_full_312.gv
…
object_layout_full_312.png
gh-71648: Optimize PNG files (GH-138842)
2025-09-12 20:13:05 +00:00
object_layout_full_313.gv
…
object_layout_full_313.png
gh-71648: Optimize PNG files (GH-138842)
2025-09-12 20:13:05 +00:00
object_layout.md
…
object.c
GH-138355: Remove trash_delete_later from _gc_runtime_state (#138767)
2025-09-17 21:25:24 +01:00
obmalloc.c
GH-131033: Enable the optimizing macros UNLIKELY and LIKELY for Clang (GH-131019)
2025-08-25 21:59:52 +01:00
odictobject.c
gh-125996: fix thread safety of collections.OrderedDict (#133734)
2025-10-13 22:55:07 +05:30
picklebufobject.c
gh-135607: remove null checking of weakref list in dealloc of extension modules and objects (#135614)
2025-06-30 11:14:31 +00:00
rangeobject.c
…
README
…
setobject.c
gh-140061: Use _PyObject_IsUniquelyReferenced() to check if objects are uniquely referenced (gh-140062)
2025-10-15 09:48:21 -04:00
sliceobject.c
…
structseq.c
gh-111489: Remove _PyTuple_FromArray() alias (#139973)
2025-10-11 22:58:14 +02:00
templateobject.c
gh-132661: Disallow Template/str concatenation after PEP 750 spec update (#135996)
2025-07-21 08:44:26 +02:00
tupleobject.c
GH-139951: Fix major GC performance regression (GH-140262)
2025-10-21 15:22:15 +01:00
typeobject.c
gh-132835: Add defensive NULL checks to MRO resolution (GH-134763)
2025-10-21 14:48:29 -07:00
typeslots.inc
…
typeslots.py
…
typevarobject.c
gh-139817: Fix refleak in TypeAliasType(qualname=non_string) (GH-140197)
2025-10-16 11:04:04 +00:00
unicode_format.c
gh-139353: Add Objects/unicode_format.c file (#139491)
2025-10-10 12:52:59 +02:00
unicode_formatter.c
gh-139353: Rename formatter_unicode.c to unicode_formatter.c (#139723)
2025-10-08 14:56:00 +02:00
unicodectype.c
…
unicodeobject.c
gh-111489: Remove _PyTuple_FromArray() alias (#139973)
2025-10-11 22:58:14 +02:00
unicodetype_db.h
closes gh-138706: update Unicode to 17.0.0 (#138719)
2025-09-11 09:58:39 -07:00
unionobject.c
gh-139988: fix a leak when failing to create a Union type (#139990)
2025-10-12 12:51:44 +02:00
weakrefobject.c
gh-133644: remove PyWeakref_GetObject and PyWeakref_GET_OBJECT (GH-133657)
2025-09-24 11:25:56 +02:00

README 

Source files for various builtin objects
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