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31729366e2bc09632e78f3896dbce0ae64914f28
cpython/Modules
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Devin Jeanpierre 31729366e2 bpo-40791: Make compare_digest more constant-time. (GH-20444) 
* bpo-40791: Make compare_digest more constant-time.

The existing volatile `left`/`right` pointers guarantee that the reads will all occur, but does not guarantee that they will be _used_. So a compiler can still short-circuit the loop, saving e.g. the overhead of doing the xors and especially the overhead of the data dependency between `result` and the reads. That would change performance depending on where the first unequal byte occurs. This change removes that optimization.

(This is change #1 from https://bugs.python.org/issue40791 .)
2020-11-21 00:55:23 -08:00
..
_blake2
bpo-1635741: Port _blake2 module to multi-phase init (GH-21856)
2020-09-02 11:45:13 +02:00
_ctypes
Add GCC pragmas to silence compiler warning about ffi_prep_closure (GH-23327)
2020-11-16 23:59:55 +00:00
_decimal
bpo-42006: Stop using PyDict_GetItem, PyDict_GetItemString and _PyDict_GetItemId. (GH-22648)
2020-10-26 08:43:39 +02:00
_io
bpo-42236: Enhance _locale._get_locale_encoding() (GH-23083)
2020-11-01 20:59:35 +01:00
_multiprocessing
bpo-1635741: Port _posixshmem extension module to multiphase initialization (GH-23404)
2020-11-19 07:20:42 -08:00
_sha3
bpo-1635741: Port _sha3 module to multi-phase init (GH-21855)
2020-09-02 11:55:19 +02:00
_sqlite
bpo-42264: Deprecate sqlite3.OptimizedUnicode (GH-23163)
2020-11-17 17:55:12 +02:00
_ssl
bpo-41056: Fix a NULL pointer dereference on MemoryError within the ssl module. (GH-21009)
2020-06-20 12:15:03 -07:00
_xxtestfuzz
Fuzz struct.unpack and catch RecursionError in re.compile (GH-18679)
2020-02-27 23:05:02 -08:00
cjkcodecs
bpo-37999: No longer use __int__ in implicit integer conversions. (GH-15636)
2020-05-26 18:43:38 +03:00
clinic
bpo-1635741: Convert _sre types to heap types and establish module state (PEP 384) (GH-23393)
2020-11-20 21:36:23 +09:00
expat
bpo-37731: Reorder includes in xmltok.c to avoid redefinition of _POSIX_C_SOURCE (GH-16733)
2019-10-12 20:14:11 +01:00
_abc.c
bpo-42157: Convert unicodedata.UCD to heap type (GH-22991)
2020-10-26 23:19:22 +01:00
_asynciomodule.c
Fix memory leak introduced by GH-22780 (GH-23237)
2020-11-11 17:48:53 +02:00
_bisectmodule.c
bpo-4356: Add key function support to the bisect module (GH-20556)
2020-10-19 22:04:01 -07:00
_bz2module.c
bpo-41052: Fix pickling heap types implemented in C with protocols 0 and 1 (GH-22870)
2020-10-24 21:14:23 +03:00
_codecsmodule.c
bpo-41919, test_codecs: Move codecs.register calls to setUp() (GH-22513)
2020-10-16 10:34:15 +02:00
_collectionsmodule.c
bpo-42161: Micro-optimize _collections._count_elements() (GH-23008)
2020-10-27 22:24:33 +01:00
_contextvarsmodule.c
bpo-1635741: _contextvars uses PyModule_AddType() (GH-23147)
2020-11-04 16:33:55 +01:00
_cryptmodule.c
bpo-1635741: Port _crypt extension module to multiphase initialization (PEP 489) (GH-18404)
2020-02-17 10:11:34 +01:00
_csv.c
bpo-12178: Fix escaping of escapechar in csv.writer() (GH-13710)
2020-09-20 09:38:07 +03:00
_curses_panel.c
bpo-1635741 port _curses_panel to multi-phase init (PEP 489) (GH-21986)
2020-09-07 17:14:25 +02:00
_cursesmodule.c
bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)
2020-10-27 17:12:53 +01:00
_datetimemodule.c
bpo-1635741: Enhance _datetime error handling (GH-23139)
2020-11-20 11:39:40 +01:00
_dbmmodule.c
bpo-1635741: Port _dbm module to multiphase initialization (GH-20848)
2020-06-16 01:20:54 +09:00
_elementtree.c
bpo-39573: Use the Py_TYPE() macro (GH-21433)
2020-07-10 12:40:38 +02:00
_functoolsmodule.c
bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)
2020-10-27 17:12:53 +01:00
_gdbmmodule.c
bpo-1635741: Port _gdbm module to multiphase initialization (GH-20920)
2020-06-17 01:41:23 +09:00
_hashopenssl.c
bpo-1635741: Port _hashlib to multiphase initialization (GH-23358)
2020-11-18 16:12:13 +01:00
_heapqmodule.c
bpo-41078: Add pycore_list.h internal header file (GH-21057)
2020-06-22 17:39:32 +02:00
_json.c
bpo-40217: Ensure Py_VISIT(Py_TYPE(self)) is always called for PyType_FromSpec types (reverts GH-19414) (GH-20264)
2020-05-27 02:03:38 -07:00
_localemodule.c
bpo-42087: Remove support for AIX 5.3 and below (GH-22830)
2020-11-16 16:16:10 +01:00
_lsprof.c
bpo-41832: PyType_FromModuleAndSpec() now accepts NULL tp_doc (GH-23123)
2020-11-06 17:04:47 +01:00
_lzmamodule.c
bpo-41052: Fix pickling heap types implemented in C with protocols 0 and 1 (GH-22870)
2020-10-24 21:14:23 +03:00
_math.c
…
_math.h
…
_opcode.c
bpo-1635741: Port _opcode module to multi-phase init (PEP 489) (GH-22050)
2020-09-07 10:48:44 +02:00
_operator.c
bpo-40791: Make compare_digest more constant-time. (GH-20444)
2020-11-21 00:55:23 -08:00
_pickle.c
bpo-42152: Use PyDict_Contains and PyDict_SetDefault if appropriate. (GH-22986)
2020-10-26 12:47:57 +02:00
_posixsubprocess.c
bpo-42375: subprocess DragonFlyBSD build update. (GH-23320)
2020-11-18 23:24:15 -08:00
_queuemodule.c
bpo-1635741: Port _queue to multiphase initialization (GH-23376)
2020-11-19 00:24:37 -08:00
_randommodule.c
bpo-1635741: Port _random to multiphase initialization (GH-23359)
2020-11-18 23:46:29 -08:00
_scproxy.c
bpo-1635741: port scproxy to multi-phase init (GH-22164)
2020-09-09 12:28:48 +09:00
_sre.c
bpo-1635741: Convert _sre types to heap types and establish module state (PEP 384) (GH-23393)
2020-11-20 21:36:23 +09:00
_ssl_data.h
closes bpo-40266, closes bpo-39953: Use numeric lib code if compiling against old OpenSSL. (GH-19506)
2020-04-13 22:11:40 -05:00
_ssl.c
bpo-42333: Port _ssl extension module to heap types (GH-23392)
2020-11-20 09:40:12 +01:00
_stat.c
bpo-40677: Define IO_REPARSE_TAG_APPEXECLINK explicitly (GH-20206)
2020-05-19 13:22:16 +01:00
_statisticsmodule.c
bpo-40268: Remove unused structmember.h includes (GH-19530)
2020-04-15 02:35:41 +02:00
_struct.c
bpo-1635741: Fix _struct for build bot error (GH-23402)
2020-11-19 06:14:34 -08:00
_testbuffer.c
closes bpo-39736: const strings in Modules/_datetimemodule.c and Modules/_testbuffer.c (GH-18637)
2020-02-23 22:40:43 -08:00
_testcapimodule.c
bpo-39573: Convert Py_TYPE() and Py_SIZE() back to macros (GH-23366)
2020-11-18 18:48:06 +01:00
_testimportmultiple.c
…
_testinternalcapi.c
bpo-42260: PyConfig_Read() only parses argv once (GH-23168)
2020-11-05 18:58:07 +01:00
_testmultiphase.c
Add _PyType_GetModuleByDef (GH-22835)
2020-11-03 22:27:12 +01:00
_threadmodule.c
bpo-42006: Stop using PyDict_GetItem, PyDict_GetItemString and _PyDict_GetItemId. (GH-22648)
2020-10-26 08:43:39 +02:00
_tkinter.c
bpo-42318: Fix support of non-BMP characters in Tkinter on macOS (GH-23281)
2020-11-15 18:16:59 +02:00
_tracemalloc.c
bpo-41995: Fix null ptr deref in tracemalloc_copy_trace() (GH-22660)
2020-10-13 08:46:31 +02:00
_uuidmodule.c
bpo-40501: Replace ctypes code in uuid with native module (GH-19948)
2020-05-12 23:32:32 +01:00
_weakref.c
bpo-40170: PyObject_GET_WEAKREFS_LISTPTR() becomes a function (GH-19377)
2020-04-06 14:07:02 +02:00
_winapi.c
bpo-1635741: Port _winapi ext to multi-stage init (GH-21371)
2020-08-13 16:22:48 +02:00
_xxsubinterpretersmodule.c
bpo-40941: Unify implicit and explicit state in the frame and generator objects into a single value. (GH-20803)
2020-07-17 11:44:23 +01:00
_zoneinfo.c
bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)
2020-10-27 17:12:53 +01:00
addrinfo.h
…
arraymodule.c
bpo-29727: Register array.array as a MutableSequence (GH-21338)
2020-07-05 22:43:14 +01:00
atexitmodule.c
Fix atexitmodule doc (GH-21456)
2020-07-26 20:33:00 -03:00
audioop.c
bpo-39824: Convert PyModule_GetState() to get_module_state() (GH-19076)
2020-03-19 10:11:33 -07:00
binascii.c
Use calloc-based functions, not malloc. (GH-19152)
2020-03-24 23:26:44 -05:00
cmathmodule.c
bpo-1635741: Port cmath to multi-phase init (PEP 489) (GH-22165)
2020-09-10 16:09:04 +02:00
config.c.in
rename _imp initialization function to follow conventions (#5432)
2018-01-29 11:33:57 -08:00
errnomodule.c
bpo-1635741: Port errno module to multiphase initialization (GH-19923)
2020-05-07 10:17:16 +09:00
faulthandler.c
bpo-1635741: Port faulthandler module to multiphase initialization (GH-21294)
2020-07-04 01:36:47 +09:00
fcntlmodule.c
bpo-41586: Add pipesize parameter to subprocess & F_GETPIPE_SZ and F_SETPIPE_SZ to fcntl. (GH-21921)
2020-10-19 16:30:02 -07:00
gc_weakref.txt
…
gcmodule.c
bpo-1635741: Port gc module to multiphase initialization (GH-23377)
2020-11-19 06:08:34 -08:00
getaddrinfo.c
bpo-32241: Add the const qualifire to declarations of umodifiable strings. (#4748)
2017-12-12 13:55:04 +02:00
getbuildinfo.c
…
getnameinfo.c
…
getpath.c
bpo-41100: Support macOS 11 and Apple Silicon (GH-22855)
2020-11-08 10:05:27 +01:00
grpmodule.c
bpo-1635741: Port grp and pwd to multiphase initialization (GH-23360)
2020-11-18 23:47:32 -08:00
hashlib.h
bpo-31370: Remove support for threads-less builds (#3385)
2017-09-07 18:56:24 +02:00
itertoolsmodule.c
bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)
2020-10-27 17:12:53 +01:00
ld_so_aix.in
…
main.c
bpo-41602: raise SIGINT exit code on KeyboardInterrupt from pymain_run_module (#21956)
2020-09-22 08:53:03 -07:00
makesetup
closes bpo-34212: Build core extension modules with Py_BUILD_CORE_BUILTIN. (GH-8712)
2018-11-26 20:21:31 -06:00
makexp_aix
bpo-42087: Remove support for AIX 5.3 and below (GH-22830)
2020-11-16 16:16:10 +01:00
mathmodule.c
bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)
2020-10-27 17:12:53 +01:00
md5module.c
md5module: Fix doc strings variable names (GH-22722)
2020-10-20 18:10:43 +09:00
mmapmodule.c
bpo-40077: Convert mmap.mmap static type to a heap type (GH-23108)
2020-11-03 10:38:31 +01:00
nismodule.c
bpo-40950: Port nis module to multiphase initialization (GH-20811)
2020-06-12 11:26:00 +09:00
ossaudiodev.c
bpo-40268: Remove unused structmember.h includes (GH-19530)
2020-04-15 02:35:41 +02:00
overlapped.c
bpo-1635741: Port _overlapped module to multi-phase init (GH-22051)
2020-09-07 15:12:40 +02:00
posixmodule.c
bpo-1635741: Convert _imp to multi-phase init (GH-23378)
2020-11-18 23:18:29 +01:00
posixmodule.h
bpo-40422: Move _Py_closerange to fileutils.c (GH-22680)
2020-10-13 22:04:44 +02:00
pwdmodule.c
bpo-1635741: Port grp and pwd to multiphase initialization (GH-23360)
2020-11-18 23:47:32 -08:00
pyexpat.c
bpo-1635741: Fix PyInit_pyexpat() error handling (GH-22489)
2020-11-04 18:37:23 +01:00
readline.c
bpo-20181: Convert the readline module to the Argument Clinic (#14326)
2020-07-12 19:01:03 +03:00
README
…
resource.c
bpo-42029: Remove IRIX code (GH-23023)
2020-10-29 15:16:23 +01:00
rotatingtree.c
…
rotatingtree.h
bpo-32150: Expand tabs to spaces in C files. (#4583)
2017-11-28 17:56:10 +02:00
selectmodule.c
bpo-42152: Use PyDict_Contains and PyDict_SetDefault if appropriate. (GH-22986)
2020-10-26 12:47:57 +02:00
Setup
bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)
2020-10-27 17:12:53 +01:00
sha1module.c
bpo-1635741: Port _sha1, _sha512, _md5 to multiphase init (GH-21818)
2020-09-06 12:09:51 +02:00
sha256module.c
bpo-1635741: Convert _sha256 types to heap types (GH-22134)
2020-09-08 11:16:14 +02:00
sha512module.c
bpo-1635741: Port _sha1, _sha512, _md5 to multiphase init (GH-21818)
2020-09-06 12:09:51 +02:00
signalmodule.c
bpo-41713: Port _signal module to multi-phase init (GH-23355)
2020-11-17 23:28:25 +01:00
socketmodule.c
bpo-42413: socket.timeout is now an alias of TimeoutError (GH-23413)
2020-11-20 00:26:07 -08:00
socketmodule.h
bpo-40291: Add support for CAN_J1939 sockets (GH-19538)
2020-04-29 15:31:19 -07:00
spwdmodule.c
bpo-1635741: Port spwd to multiphase initialization (GH-23390)
2020-11-19 10:54:03 +01:00
sre_constants.h
bpo-31690: Allow the inline flags "a", "L", and "u" to be used as group flags for RE. (#3885)
2017-10-24 23:31:42 +03:00
sre_lib.h
bpo-40943: Replace PY_FORMAT_SIZE_T with "z" (GH-20781)
2020-06-10 18:38:05 +02:00
sre.h
bpo-39943: Add the const qualifier to pointers on non-mutable PyUnicode data. (GH-19345)
2020-04-11 10:48:40 +03:00
symtablemodule.c
bpo-1635741: Port symtable module to multiphase initialization (GH-23361)
2020-11-18 07:03:51 -08:00
syslogmodule.c
bpo-1635741: Port syslog module to multiphase initialization (GH-19907)
2020-05-05 10:49:46 +09:00
termios.c
bpo-20184: Convert termios to Argument Clinic. (GH-22693)
2020-10-18 17:54:06 +03:00
testcapi_long.h
…
timemodule.c
bpo-37205: time.time() cannot fail with fatal error (GH-23314)
2020-11-16 16:08:05 +01:00
tkappinit.c
…
tkinter.h
…
unicodedata_db.h
closes bpo-39926: Update Unicode to 13.0.0. (GH-18910)
2020-03-10 20:41:34 -07:00
unicodedata.c
bpo-42157: Rename unicodedata.ucnhash_CAPI (GH-22994)
2020-10-27 04:36:22 +01:00
unicodename_db.h
closes bpo-39926: Update Unicode to 13.0.0. (GH-18910)
2020-03-10 20:41:34 -07:00
winreparse.h
bpo-31512: Add non-elevated symlink support for Windows (GH-3652)
2019-04-09 11:19:46 -07:00
xxlimited.c
bpo-40217: Ensure Py_VISIT(Py_TYPE(self)) is always called for PyType_FromSpec types (reverts GH-19414) (GH-20264)
2020-05-27 02:03:38 -07:00
xxmodule.c
bpo-39573: Clean up modules and headers to use Py_IS_TYPE() function (GH-18521)
2020-02-17 11:09:15 +01:00
xxsubtype.c
bpo-40268: Remove unused structmember.h includes (GH-19530)
2020-04-15 02:35:41 +02:00
zlibmodule.c
bpo-1635741 port zlib module to multi-phase init (GH-21995)
2020-09-07 10:27:55 +02:00

README 

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