Petr Viktorin 49d72365cd gh-127545: Add _Py_ALIGNED_DEF(N, T) and use it for PyObject (GH-135209) ... * Replace _Py_ALIGN_AS(V) by _Py_ALIGNED_DEF(N, T) This is now a common façade for the various `_Alignas` alternatives, which behave in interesting ways -- see the source comment. The new macro (and MSVC's `__declspec(align)`) should not be used on a variable/member declaration that includes a struct declaraton. A workaround is to separate the struct definition. Do that for `PyASCIIObject.state`. * Specify minimum PyGC_Head and PyObject alignment As documented in InternalDocs/garbage_collector.md, the garbage collector stores flags in the least significant two bits of the _gc_prev pointer in struct PyGC_Head. Consequently, this pointer is only capable of storing a location that's aligned to a 4-byte boundary. Encode this requirement using _Py_ALIGNED_DEF. This patch fixes a segfault in m68k, which was previously investigated by Adrian Glaubitz here: https://lists.debian.org/debian-68k/2024/11/msg00020.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1087600 Original patch (using the GCC-only Py_ALIGNED) by Finn Thain. Co-authored-by: Finn Thain <fthain@linux-m68k.org> Co-authored-by: Victor Stinner <vstinner@python.org> Co-authored-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>		2025-06-11 12:44:58 +02:00
..
abstract.h	gh-130947: Add again PySequence_Fast() to the limited C API (#130948)	2025-03-13 13:00:57 +01:00
audit.h	gh-125604: Move _Py_AuditHookEntry, etc. Out of pycore_runtime.h (gh-125605)	2024-10-18 09:26:08 -06:00
bytearrayobject.h	gh-129107: make bytearray thread safe (#129108)	2025-02-15 07:19:42 +00:00
bytesobject.h	gh-128863: Deprecate private C API functions (#128864)	2025-01-22 11:04:19 +00:00
cellobject.h	gh-127271: Replace use of PyCell_GET/SET (gh-127272)	2024-12-03 10:33:06 -08:00
ceval.h	gh-125604: Move _Py_AuditHookEntry, etc. Out of pycore_runtime.h (gh-125605)	2024-10-18 09:26:08 -06:00
classobject.h	gh-89653: PEP 670: Convert macros to functions (#99843)	2022-11-28 16:40:08 +01:00
code.h	GH-131238: Core header refactor (GH-131250)	2025-03-17 09:19:04 +00:00
compile.h	gh-117411: move PyFutureFeatures to pycore_symtable.h and make it private (#117412)	2024-04-02 10:34:49 +00:00
complexobject.h	gh-128813: hide mixed-mode functions for complex arithmetic from C-API (#131703)	2025-04-22 14:18:18 +02:00
context.h	gh-124872: Replace enter/exit events with "switched" (#125532)	2024-10-16 13:53:21 +02:00
critical_section.h	gh-119344: Make critical section API public (#119353)	2024-06-21 15:50:18 -04:00
descrobject.h	gh-106320: Move _PyMethodWrapper_Type to internal C API (#107064)	2023-07-22 20:57:59 +00:00
dictobject.h	gh-128863: Deprecate private C API functions (#128864)	2025-01-22 11:04:19 +00:00
fileobject.h	gh-106320: Remove private _Py_UniversalNewlineFgetsWithSize() (#108602)	2023-08-29 02:36:50 +00:00
fileutils.h	gh-128863: Deprecate private C API functions (#128864)	2025-01-22 11:04:19 +00:00
floatobject.h	gh-89653: PEP 670: Convert macros to functions (#99843)	2022-11-28 16:40:08 +01:00
frameobject.h	gh-74929: Implement PEP 667 (GH-115153)	2024-05-04 12:12:10 +01:00
funcobject.h	gh-132775: Unrevert "Add _PyCode_GetVarCounts()" (gh-133265)	2025-05-05 13:24:29 -06:00
genobject.h	gh-120834: fix type of *_iframe field in _PyGenObject_HEAD declaration (#120835)	2024-06-24 10:23:38 +01:00
import.h	gh-128911: Add PyImport_ImportModuleAttr() function (#128912)	2025-01-30 11:17:29 +00:00
initconfig.h	gh-128384: Use a context variable for warnings.catch_warnings (gh-130010)	2025-04-09 16:18:54 -07:00
listobject.h	gh-112087: Make list_repr and list_length to be thread-safe (gh-114582)	2024-01-27 01:20:21 +09:00
lock.h	gh-117511: Make PyMutex public in the non-limited API (#117731)	2024-06-20 11:29:08 -04:00
longintrepr.h	gh-127119: Faster check for small ints in long_dealloc (GH-127620)	2025-01-29 15:22:18 +00:00
longobject.h	gh-132639: Adds PyLong_AsNativeBytes, PyLong_FromNativeBytes and PyLong_FromUnsignedNativeBytes to the limited API (GH-132640)	2025-04-21 15:59:03 +01:00
memoryobject.h	gh-106320: Remove private _PyManagedBuffer_Type (#108431)	2023-08-24 19:07:54 +02:00
methodobject.h	gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815)	2022-06-16 13:49:43 +02:00
modsupport.h	gh-112136: Restore removed _PyArg_Parser (#121262)	2024-07-03 18:36:57 +02:00
monitoring.h	GH-122548: Implement branch taken and not taken events for sys.monitoring (GH-122564)	2024-12-19 16:59:51 +00:00
object.h	Revert "gh-133395: add option for extension modules to specialize BINARY_OP/SUBSCR, apply to arrays (#133396)" (#133498)	2025-05-06 13:12:26 +03:00
objimpl.h	gh-102013: Move PyUnstable_GC_VisitObjects() to Include/cpython/objimpl.h (#115560)	2024-02-16 15:49:13 +01:00
odictobject.h	gh-87347: Add parenthesis around macro arguments (#93915)	2022-06-20 16:04:52 +02:00
picklebufobject.h	gh-87347: Add parenthesis around PyXXX_Check() arguments (#92815)	2022-06-16 13:49:43 +02:00
pthread_stubs.h	GH-110829: Ensure Thread.join() joins the OS thread (#110848)	2023-11-04 13:59:24 +00:00
pyatomic.h	gh-129296: Fix pyatomic.h include paths (#129320)	2025-01-29 15:06:19 +00:00
pyatomic_gcc.h	gh-131121: Fix _Py_atomic_store_char_relaxed memory order (gh-131122)	2025-03-12 09:03:04 -04:00
pyatomic_msc.h	gh-117657: TSAN Fix races in PyMember_Get and PyMember_Set for C extensions (GH-123211)	2024-12-03 09:41:53 -05:00
pyatomic_std.h	gh-117657: TSAN Fix races in PyMember_Get and PyMember_Set for C extensions (GH-123211)	2024-12-03 09:41:53 -05:00
pyctype.h	bpo-43816: Add extern "C" to Include/cpython/pyctype.h (GH-25365)	2021-04-13 13:27:21 +02:00
pydebug.h	gh-77782: Deprecate global configuration variable (#93943)	2022-06-17 16:12:00 +02:00
pyerrors.h	gh-132449: Improve syntax error messages for keywords with typos (#132450)	2025-04-22 11:01:55 +02:00
pyfpe.h	bpo-35134: Move non-limited C API files to Include/cpython/ (GH-24561)	2021-02-19 15:55:46 +01:00
pyframe.h	Fix typos in comments (#120188)	2024-06-07 10:19:41 +02:00
pyhash.h	gh-128863: Deprecate private C API functions (#128864)	2025-01-22 11:04:19 +00:00
pylifecycle.h	gh-129033: Remove _Py_InitializeMain() function (#129034)	2025-01-20 10:03:22 +00:00
pymem.h	gh-90815: Add mimalloc memory allocator (#109914)	2023-10-30 15:43:11 +00:00
pystate.h	gh-91048: Refactor and optimize remote debugging module (#134652)	2025-05-25 20:19:29 +00:00
pystats.h	gh-100239: specialize BINARY_OP/SUBSCR for list-slice (#132626)	2025-05-01 10:28:52 +00:00
pythonrun.h	gh-106320: Remove private pythonrun API (#108599)	2023-08-29 04:18:52 +02:00
pythread.h	gh-129296: Fix pyatomic.h include paths (#129320)	2025-01-29 15:06:19 +00:00
pytime.h	gh-110850: Add PyTime_TimeRaw() function (#118394)	2024-05-01 18:05:01 +00:00
setobject.h	gh-112069: Make PySet_GET_SIZE to be atomic safe. (gh-118053)	2024-04-19 06:40:28 +09:00
traceback.h	gh-106320: Remove private _PyTraceback functions (#108453)	2023-08-24 23:35:47 +00:00
tracemalloc.h	Add extern "C" around PyTraceMalloc_ functions. (#127772)	2024-12-11 10:27:07 +01:00
tupleobject.h	gh-131525: Cache the result of tuple_hash (#131529)	2025-03-27 09:57:06 -04:00
unicodeobject.h	gh-127545: Add _Py_ALIGNED_DEF(N, T) and use it for PyObject (GH-135209)	2025-06-11 12:44:58 +02:00
warnings.h	gh-131927: Prevent emitting optimizer warnings twice in the REPL (#131993)	2025-04-12 11:34:36 +01:00
weakrefobject.h	gh-128008: Add PyWeakref_IsDead() (GH-128009)	2024-12-19 16:17:15 +01:00