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Seth Larson 991224b1e8 gh-149079: Fix O(n^2) canonical ordering in unicodedata.normalize() (GH-149080) 
Replace the insertion sort used for canonical ordering of combining
characters with a hybrid approach: insertion sort for short runs (< 20)
and counting sort for longer runs, reducing worst-case complexity from
O(n^2) to O(n). This prevents denial of service via crafted Unicode
strings with many combining characters in alternating CCC order.

Co-authored-by: ch4n3-yoon <ch4n3.yoon@gmail.com>
Co-authored-by: Seokchan Yoon <13852925+ch4n3-yoon@users.noreply.github.com>
Co-authored-by: Stan Ulbrych <stan@python.org>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
2026-06-02 11:39:50 +02:00
..
_ctypes
gh-148675: Use a string for ctypes cparam tag (#149778)
2026-05-15 13:25:09 +02:00
_decimal
gh-115119: Remove superfluous TEST_COVERAGE private macro from _decimal module (GH-149756)
2026-06-01 13:41:21 -05:00
_hacl
gh-148200: Update Modules/_hacl/ for Cygwin (#149802)
2026-05-15 14:42:30 +02:00
_io
gh-149046: fix: correctly handle str subclasses in io.StringIO (#149047)
2026-06-01 13:01:57 +00:00
_multiprocessing
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_remote_debugging
gh-149931: Fix memory leaks on failed realloc (#149932)
2026-05-26 01:37:14 +01:00
_sqlite
gh-149738: Fix segmentation fault bug in sqllite3 (#149754)
2026-06-02 11:07:08 +02:00
_sre
gh-150717: Avoid mark-array allocation for groupless regex patterns (GH-150719)
2026-06-02 10:45:30 +03:00
_ssl
gh-146207: Add support for OpenSSL 4.0.0 alpha1 (#146217)
2026-03-25 07:44:47 +01:00
_testcapi
gh-150114: Log the memory usage in regrtest on macOS (gh-150396)
2026-05-26 00:03:06 +09:00
_testinternalcapi
gh-148871: make LOAD_COMMON_CONSTANT use immortal stackref borrows (GH-149625)
2026-05-28 12:27:37 +01:00
_testlimitedcapi
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_xxtestfuzz
Update and expand the 'Fuzz Tests for CPython' README (#148270)
2026-04-09 08:52:30 +01:00
_zstd
gh-150285: Fix too long docstrings in the zstd module (GH-150291)
2026-05-24 15:03:22 +03:00
cjkcodecs
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
clinic
Correct frexp() docs for zero and non-finite numbers (GH-149753)
2026-05-31 07:29:44 +00:00
expat
gh-149698: Update bundled expat to 2.8.1 (GH-149699)
2026-05-14 01:21:03 +02:00
_abc.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_asynciomodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_bisectmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_bz2module.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_codecsmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_collectionsmodule.c
gh-149534: Fix unification of defaultdict and frozendict with | (#149539)
2026-06-01 16:26:49 +03:00
_csv.c
gh-145105: Fix crash in csv.reader with re-entrant iterator (GH-145106)
2026-04-11 15:18:02 -07:00
_curses_panel.c
gh-150285: Fix too long docstrings in the curses module (GH-150286)
2026-05-24 15:02:12 +03:00
_cursesmodule.c
gh-150285: Fix too long docstrings in the curses module (GH-150286)
2026-05-24 15:02:12 +03:00
_datetimemodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_dbmmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_elementtree.c
gh-149571: Fix the C implementation of Element.itertext() (GH-149929)
2026-05-27 13:23:28 +03:00
_functoolsmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_gdbmmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_hashopenssl.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_heapqmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_interpchannelsmodule.c
gh-149921: Fix reference leaks in _interpchannels and _interpqueues modules (#149922)
2026-05-17 13:09:19 +03:00
_interpqueuesmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_interpreters_common.h
gh-132775: Use _PyObject_GetXIData (With Fallback) (gh-134440)
2025-05-22 06:50:06 -06:00
_interpretersmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_json.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_localemodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
_lsprof.c
gh-145846: Fix memory leak in _lsprof clearEntries() context chain (#145847)
2026-04-07 22:56:19 +02:00
_lzmamodule.c
gh-115988: Add ARM64 and RISCV BCJ filters constants in lzma module (GH-115989)
2026-05-28 08:05:03 -07:00
_math.h
…
_opcode.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_operator.c
GH-145247: Use _PyTuple_FromPair in Modules (part 1) (#148000)
2026-04-02 23:20:13 +02:00
_pickle.c
gh-150157: Fix critical section for PyDict_Next() in _pickle.c (GH-150158)
2026-06-01 17:32:13 +03:00
_posixsubprocess.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_queuemodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_randommodule.c
gh-149816: Fix a RC in _random.Random.__init__ method (#149824)
2026-05-18 18:39:54 +03:00
_scproxy.c
…
_ssl_data_36.h
gh-149254: Update CI to use latest OpenSSL and AWS-LC versions (GH-149330)
2026-05-03 20:20:51 +00:00
_ssl_data_40.h
gh-148600: Add Modules/_ssl_data_40.h data (#148601)
2026-04-15 15:59:02 +02:00
_ssl_data_111.h
…
_ssl_data_300.h
…
_ssl_data_340.h
…
_ssl.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_ssl.h
…
_stat.c
gh-108765: fix comment about macro definitions in _stat.c post GH-108854 (#136027)
2025-06-27 15:15:11 +00:00
_statisticsmodule.c
…
_struct.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_suggestions.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
_sysconfig.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
_testbuffer.c
gh-146151: memoryview supports 'F' and 'D' format types (complex) (#146241)
2026-03-26 15:26:34 +01:00
_testcapi_feature_macros.inc
…
_testcapimodule.c
gh-149101: Implement PEP 788 (GH-149116)
2026-05-06 17:39:30 -04:00
_testclinic_limited.c
…
_testclinic.c
gh-144545: Improve handling of default values in Argument Clinic (GH-146016)
2026-03-17 12:16:35 +02:00
_testimportmultiple.c
…
_testinternalcapi.c
gh-149879: Fix test_capi on Cygwin (#150252)
2026-05-22 21:47:32 +02:00
_testlimitedcapi.c
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
_testmultiphase.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_testsinglephase.c
gh-145921: Add "_DuringGC" functions for tp_traverse (GH-145925)
2026-04-08 09:15:11 +02:00
_threadmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_tkinter.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_tracemalloc.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
_typesmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
_typingmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
_uuidmodule.c
gh-132710: only use stable _uuid.generate_time_safe() to deduce MAC address (#132901)
2025-05-26 10:56:31 +02:00
_weakref.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
_winapi.c
gh-150114: Log the memory usage in regrtest on Windows (#150267)
2026-05-23 00:04:51 +02:00
_zoneinfo.c
gh-145883: Fix two heap-buffer-overflows in _zoneinfo (#145885)
2026-04-04 13:29:17 +01:00
addrinfo.h
…
arraymodule.c
gh-80480: Remove deprecated 'u' array type code (#149535)
2026-06-01 11:57:55 +00:00
atexitmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
binascii.c
gh-134837: Correct and improve base85 documentation for base64 and binascii modules (GH-145843)
2026-05-12 22:46:46 +03:00
blake2module.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
cmathmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
config.c.in
…
errnomodule.c
…
faulthandler.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
fcntlmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
gc_weakref.txt
GH-135552: Make the GC clear weakrefs later (GH-136189)
2025-08-07 16:32:17 -07:00
gcmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
getaddrinfo.c
…
getbuildinfo.c
…
getnameinfo.c
…
getpath_noop.c
…
getpath.c
…
getpath.py
GH-145273: don't skip missing platstdlib warning if stdlib_zip is found (#145544)
2026-03-09 19:37:33 +00:00
grpmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
hashlib.h
gh-131876: Revert "gh-131876: extract _hashlib helpers into a separate directory (#136995) (#137307)
2025-08-01 10:45:40 -07:00
hmacmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
itertoolsmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
ld_so_aix.in
…
main.c
GH-145247: Use _PyTuple_FromPair in Modules (part 1) (#148000)
2026-04-02 23:20:13 +02:00
makesetup
gh-116943: Ensure makesetup does not choke on missing EOL in Setup.* files (#139100)
2025-09-18 09:25:01 +00:00
makexp_aix
…
mathintegermodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
mathmodule.c
Correct frexp() docs for zero and non-finite numbers (GH-149753)
2026-05-31 07:29:44 +00:00
md5module.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
mmapmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
overlapped.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
posixmodule.c
gh-150285: Fix too long docstrings in the os module (GH-150296)
2026-05-24 15:04:01 +03:00
posixmodule.h
…
pwdmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
pyexpat.c
gh-150560: Fix crash in XML parser on invalid XML with multi-byte encoding (GH-150568)
2026-05-30 00:23:32 +03:00
readline.c
gh-150372: Add missing null check on completer_word_break_characters in readline.c (GH-150251)
2026-05-30 19:26:05 +00:00
README
…
resource.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
rotatingtree.c
…
rotatingtree.h
…
selectmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
Setup
gh-140550: Update xxlimited with 3.15 limited API (GH-142827)
2026-05-13 18:35:50 +02:00
Setup.bootstrap.in
gh-136421: Load _datetime static types during interpreter initialization (GH-136583)
2025-07-21 13:47:26 -04:00
Setup.stdlib.in
gh-140550: Update xxlimited with 3.15 limited API (GH-142827)
2026-05-13 18:35:50 +02:00
sha1module.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
sha2module.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
sha3module.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
signalmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
socketmodule.c
gh-150406: Check result of PyThread_allocate_lock() for netdb_lock (GH-150407)
2026-05-30 16:25:40 +00:00
socketmodule.h
gh-86819: Add ISO-TP CAN socket constants (#23794)
2025-09-17 17:18:04 +00:00
symtablemodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
syslogmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
termios.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00
timemodule.c
gh-149931: Fix memory leaks on failed realloc (#149932)
2026-05-26 01:37:14 +01:00
tkappinit.c
…
tkinter.h
…
unicodedata_db.h
gh-66802: Add unicodedata.block() function (#145042)
2026-02-21 18:27:55 +01:00
unicodedata.c
gh-149079: Fix O(n^2) canonical ordering in unicodedata.normalize() (GH-149080)
2026-06-02 11:39:50 +02:00
unicodename_db.h
gh-144882: Optimize name tables in unicodedata by excluding names derived by rule NR2 (GH-144883)
2026-02-18 12:58:21 +02:00
winreparse.h
…
xxlimited_3_13.c
gh-140550: Update xxlimited with 3.15 limited API (GH-142827)
2026-05-13 18:35:50 +02:00
xxlimited_35.c
gh-140550: Update xxlimited with 3.15 limited API (GH-142827)
2026-05-13 18:35:50 +02:00
xxlimited.c
gh-140550: Update xxlimited with 3.15 limited API (GH-142827)
2026-05-13 18:35:50 +02:00
xxmodule.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
xxsubtype.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
zlibmodule.c
gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338)
2026-05-24 16:16:12 +03:00

README 

Source files for standard library extension modules,
and former extension modules that are now builtin modules.
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