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Eric Snow 0d5fe2c7b4
[3.12] gh-119213: Be More Careful About _PyArg_Parser.kwtuple Across Interpreters (gh-119331) (gh-119425) 
_PyArg_Parser holds static global data generated for modules by Argument Clinic.  The _PyArg_Parser.kwtuple field is a tuple object, even though it's stored within a static global.  In some cases the tuple is statically allocated and thus it's okay that it gets shared by multiple interpreters.  However, in other cases the tuple is set lazily, allocated from the heap using the active interprepreter at the point the tuple is needed.

This is a problem once that interpreter is destroyed since _PyArg_Parser.kwtuple becomes at dangling pointer, leading to crashes.  It isn't a problem if the tuple is allocated under the main interpreter, since its lifetime is bound to the lifetime of the runtime.  The solution here is to temporarily switch to the main interpreter.  The alternative would be to always statically allocate the tuple.

This change also fixes a bug where only the most recent parser was added to the global linked list.

(cherry picked from commit 81865002ae)
2024-05-22 22:26:58 +00:00
..
cpython [3.12] gh-116767: fix crash on 'async with' with many context managers (GH-118348) (#118477) 2024-05-01 18:23:29 +01:00
internal [3.12] gh-119213: Be More Careful About _PyArg_Parser.kwtuple Across Interpreters (gh-119331) (gh-119425) 2024-05-22 22:26:58 +00:00
abstract.h gh-98586: Add vector call APIs to the Limited API (GH-98587) 2022-10-27 11:45:42 +02:00
bltinmodule.h
boolobject.h [3.12] gh-106560: Fix redundant declarations in Include/ (#112611) (#112650) 2023-12-03 11:45:32 +00:00
bytearrayobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
bytesobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
ceval.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
codecs.h
compile.h [3.12] gh-109596: Ensure repeated rules in the grammar are not allowed and fix incorrect soft keywords (GH-109606). (#109752) 2023-10-02 17:22:07 +02:00
complexobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
datetime.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
descrobject.h gh-103509: PEP 697 -- Limited C API for Extending Opaque Types (GH-103511) 2023-05-04 09:56:53 +02:00
dictobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
dynamic_annotations.h gh-96959: Update HTTP links which are redirected to HTTPS (GH-96961) 2022-09-24 14:38:53 +03:00
enumobject.h
errcode.h [3.12] gh-107450: Check for overflow in the tokenizer and fix overflow test (GH-110832) (#110931) 2023-10-16 18:59:18 +02:00
exports.h gh-88267: Avoid DLL exporting functions from static builds on Windows(GH-99888) 2022-12-09 11:16:15 +00:00
fileobject.h [3.12] gh-77782: Deprecate Py_HasFileSystemDefaultEncoding (GH-106272) (#106274) 2023-06-30 10:21:36 +00:00
fileutils.h bpo-45434: Remove useless space in includes (GH-28963) 2021-10-15 01:50:04 +02:00
floatobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
frameobject.h bpo-45434: Remove useless space in includes (GH-28963) 2021-10-15 01:50:04 +02:00
genericaliasobject.h bpo-44654: Refactor and clean up the union type implementation (GH-27196) 2021-07-17 22:44:10 +03:00
import.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
interpreteridobject.h [3.12] gh-101524: Only Use Public C-API in the _xxsubinterpreters Module (gh-105258) (gh-107303) 2023-07-27 13:15:47 -06:00
intrcheck.h
iterobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
listobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
longobject.h [3.12] gh-117021: Fix integer overflow in PyLong_AsPid() on non-Windows 64-bit platforms (GH-117064) (GH-117070) 2024-03-20 16:44:05 +02:00
marshal.h bpo-45474: Exclude all of marshal.h if Py_LIMITED_API is defined (GH-29061) 2021-10-20 02:32:14 -07:00
memoryobject.h gh-79315: Add Include/cpython/memoryobject.h header (#99723) 2022-11-23 15:44:42 +01:00
methodobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
modsupport.h [3.12] gh-107226: PyModule_AddObjectRef() should only be in the limited API 3.10 (GH-107227) (GH-107260) 2023-07-25 23:01:18 +03:00
moduleobject.h [3.12] gh-111698: Restrict Py_mod_multiple_interpreters to 3.12+ Under Py_LIMITED_API (gh-111707) (gh-111787) 2023-11-27 19:42:27 -07:00
object.h [3.12] gh-116869: Make C API compatible with ISO C90 (GH-116950) (#117011) 2024-03-19 16:06:15 +00:00
objimpl.h gh-102013: Add PyUnstable_GC_VisitObjects (#102014) 2023-03-14 01:35:54 +00:00
opcode.h gh-103865: add monitoring support to LOAD_SUPER_ATTR (#103866) 2023-05-16 10:29:00 -06:00
osdefs.h
osmodule.h
patchlevel.h Post 3.12.3 2024-04-09 17:25:54 +02:00
py_curses.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
pybuffer.h gh-102500: Implement PEP 688 (#102521) 2023-05-04 07:59:46 -07:00
pycapsule.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
pydtrace.d
pydtrace.h Fix pydtrace.d path comment in Include/pydtrace.h (#28539) 2022-12-31 22:40:25 +05:30
pyerrors.h GH-101578: Normalize the current exception (GH-101607) 2023-02-08 09:31:12 +00:00
pyexpat.h [3.12] gh-115398: Expose Expat >=2.6.0 reparse deferral API (CVE-2023-52425) (GH-115623) (GH-116248) 2024-03-06 22:01:45 +00:00
pyframe.h gh-93937, C API: Move PyFrame_GetBack() to Python.h (#93938) 2022-06-19 12:02:33 +02:00
pyhash.h bpo-29410: Change the default hash algorithm to SipHash13. (GH-28752) 2021-10-10 17:29:46 +09:00
pylifecycle.h bpo-43931: Export Python version as API data (GH-25577) 2021-12-09 17:52:05 -08:00
pymacconfig.h [3.12] gh-110820: Disable test_signal.test_stress_modifying_handlers on macOS (GH-112834) 2023-12-09 15:53:16 +01:00
pymacro.h gh-99069: Consolidate checks for static_assert (#94766) 2023-04-05 17:09:19 +02:00
pymath.h gh-104263: Rely on Py_NAN and introduce Py_INFINITY (GH-104202) 2023-05-10 17:44:52 +01:00
pymem.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
pyport.h [3.12] gh-112536: Define _Py_THREAD_SANITIZER on GCC when TSan is enabled (GH-117702) (#117713) 2024-04-10 14:38:10 +00:00
pystate.h bpo-45459: C API uses type names rather than structure names (GH-31528) 2022-02-24 17:51:59 +01:00
pystats.h Remove useless symbol in pystats.h (#101864) 2023-04-09 14:13:21 +05:30
pystrcmp.h
pystrtod.h bpo-45995: add "z" format specifer to coerce negative 0 to zero (GH-30049) 2022-04-11 15:34:18 +01:00
Python.h [3.12] gh-117021: Fix integer overflow in PyLong_AsPid() on non-Windows 64-bit platforms (GH-117064) (GH-117070) 2024-03-20 16:44:05 +02:00
pythonrun.h gh-102755: PyErr_DisplayException only in ABI >= 3.12. Tests cover PyErr_Display as well (GH-102849) 2023-03-21 10:36:18 +01:00
pythread.h bpo-42047: Add native thread ID for DragonFlyBSD (#22714) 2022-05-18 15:10:10 +02:00
pytypedefs.h bpo-45459: Fix PyModuleDef_Slot type in the limited C API (GH-31668) 2022-03-03 23:06:55 +01:00
rangeobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
README.rst gh-101101: Unstable C API tier (PEP 689) (GH-101102) 2023-02-28 09:31:01 +01:00
setobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
sliceobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
structmember.h gh-47146: Soft-deprecate structmember.h, expose its contents via Python.h (GH-99014) 2022-11-22 08:25:43 +01:00
structseq.h gh-87347: Add parenthesis around macro arguments (#93915) 2022-06-20 16:04:52 +02:00
sysmodule.h gh-103295: expose API for writing perf map files (#103546) 2023-05-21 11:12:24 +01:00
traceback.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
tracemalloc.h GH-101520: Move tracemalloc functionality into core, leaving interface in Modules. (#104508) 2023-05-17 14:17:16 +01:00
tupleobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00
typeslots.h bpo-45459: Add Py_buffer to limited API (GH-29991) 2022-02-02 07:03:10 -08:00
unicodeobject.h Fix typo in "expected" word in few source files (#104034) 2023-05-01 09:45:50 -06:00
warnings.h bpo-35134: Split warnings.h and weakrefobject.h (GH-29042) 2021-10-19 01:31:57 +02:00
weakrefobject.h gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815) 2022-06-16 13:49:43 +02:00

README.rst 

The Python C API
================

The C API is divided into these sections:

1. ``Include/``: Limited API
2. ``Include/cpython/``: CPython implementation details
3. ``Include/cpython/``, names with the ``PyUnstable_`` prefix: API that can
   change between minor releases
4. ``Include/internal/``, and any name with ``_`` prefix: The internal API

Information on changing the C API is available `in the developer guide`_

.. _in the developer guide: https://devguide.python.org/c-api/