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Jessica Clarke dec0757549
bpo-43179: Generalise alignment for optimised string routines (GH-24624) 
* Remove m68k-specific hack from ascii_decode

On m68k, alignments of primitives is more relaxed, with 4-byte and
8-byte types only requiring 2-byte alignment, thus using sizeof(size_t)
does not work. Instead, use the portable alternative.

Note that this is a minimal fix that only relaxes the assertion and the
condition for when to use the optimised version remains overly strict.
Such issues will be fixed tree-wide in the next commit.

NB: In C11 we could use _Alignof(size_t) instead, but for compatibility
we use autoconf.

* Optimise string routines for architectures with non-natural alignment

C only requires that sizeof(x) is a multiple of alignof(x), not that the
two are equal. Thus anywhere where we optimise based on alignment we
should be using alignof(x) not sizeof(x).

This is more annoying than it would be in C11 where we could just use
_Alignof(x) (and alignof(x) in C++11), but since we still require only
C99 we must plumb the information all the way from autoconf through the
various typedefs and defines.
 		2021-03-31 12:12:39 +02:00
..
clinic bpo-42431: Fix outdated bytes comments (GH-23458) 2020-12-03 12:46:16 +02:00
stringlib bpo-43179: Generalise alignment for optimised string routines (GH-24624) 2021-03-31 12:12:39 +02:00
README Issue #18093: Factor out the programs that embed the runtime 2014-07-25 21:52:14 +10:00
abstract.c bpo-31861: Add aiter and anext to builtins (#23847) 2021-03-23 15:47:21 -07:00
accu.c bpo-35081: Move accu.h to Include/internal/pycore_accu.h (GH-10271) 2018-11-01 02:30:36 +01:00
boolobject.c bpo-41870: Avoid the test when nargs=0 (GH-22462) 2020-10-01 13:50:40 +09:00
bytearrayobject.c bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917) 2021-02-26 14:51:55 -08:00
bytes_methods.c bpo-43179: Generalise alignment for optimised string routines (GH-24624) 2021-03-31 12:12:39 +02:00
bytesobject.c bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917) 2021-02-26 14:51:55 -08:00
call.c bpo-42990: Further refactoring of PyEval_ functions. (GH-24368) 2021-02-01 10:42:03 +00:00
capsule.c bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587) 2020-12-01 10:37:39 +01:00
cellobject.c bpo-40268: Remove unused pycore_pymem.h includes (GH-19531) 2020-04-15 02:57:50 +02:00
classobject.c bpo-40268: Remove unused pycore_pymem.h includes (GH-19531) 2020-04-15 02:57:50 +02:00
codeobject.c bpo-40455: Fix gcc10+ warning about writing into a section of offset 0 (GH-24384) 2021-01-30 22:54:22 +09:00
complexobject.c bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587) 2020-12-01 10:37:39 +01:00
descrobject.c bpo-40170: Convert PyDescr_IsData() to static inline function (GH-24535) 2021-02-16 08:50:00 +01:00
dict-common.h bpo-33312: Fix clang ubsan out of bounds warnings in dict. (GH-6537) 2018-04-19 22:41:19 -07:00
dictnotes.txt Issue #15055: update dictnotes.txt. Patch by Mark Shannon. 2012-06-24 21:03:45 +02:00
dictobject.c bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917) 2021-02-26 14:51:55 -08:00
enumobject.c bpo-42536: GC track recycled tuples (GH-23623) 2020-12-04 19:45:57 -08:00
exceptions.c bpo-43510: Implement PEP 597 opt-in EncodingWarning. (GH-19481) 2021-03-29 12:28:14 +09:00
fileobject.c bpo-41985: Add _PyLong_FileDescriptor_Converter and AC converter for "fildes". (GH-22620) 2020-10-09 23:00:45 +03:00
floatobject.c bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917) 2021-02-26 14:51:55 -08:00
frameobject.c bpo-43541: Fix PyEval_EvalCodeEx() regression (GH-24918) 2021-03-18 14:51:24 +01:00
funcobject.c bpo-43541: Fix PyEval_EvalCodeEx() regression (GH-24918) 2021-03-18 14:51:24 +01:00
genericaliasobject.c bpo-42814: Fix undefined behavior in Objects/genericaliasobject.c (GH-24073) 2021-01-03 13:18:25 +01:00
genobject.c bpo-43268: Pass interp rather than tstate to internal functions (GH-24580) 2021-02-19 15:10:45 +01:00
interpreteridobject.c bpo-40302: Replace PY_INT64_T with int64_t (GH-19573) 2020-04-17 19:13:06 +02:00
iterobject.c bpo-31861: Fix possible crash in PyAnextAwaitable_New (GH-25005) 2021-03-24 00:30:02 +00:00
listobject.c bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917) 2021-02-26 14:51:55 -08:00
listsort.txt Fixes in sorting descriptions (GH-18317) 2020-02-03 08:47:20 -08:00
lnotab_notes.txt bpo-43494: Make some minor changes to lnotab notes (GH-24861) 2021-03-19 19:10:54 -04:00
longobject.c bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917) 2021-02-26 14:51:55 -08:00
memoryobject.c bpo-41732: add iterator to memoryview (GH-22119) 2020-09-08 16:28:45 +09:00
methodobject.c bpo-42015: Reorder dereferencing calls in meth_dealloc, to make sure m_self is kept alive long enough (GH-22670) 2020-10-13 00:06:19 +03:00
moduleobject.c bpo-42923: Dump extension modules on fatal error (GH-24207) 2021-01-18 20:47:13 +01:00
namespaceobject.c bpo-39075: types.SimpleNamespace no longer sorts attributes in its repr (GH-19430) 2020-05-15 18:27:54 -07:00
object.c bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587) 2020-12-01 10:37:39 +01:00
obmalloc.c bpo-37448: Use radix tree for pymalloc address_in_range(). (GH-14474) 2021-03-29 19:51:15 -07:00
odictobject.c bpo-42536: GC track recycled tuples (GH-23623) 2020-12-04 19:45:57 -08:00
picklebufobject.c bpo-36785: PEP 574 implementation (GH-7076) 2019-05-26 17:10:09 +02:00
rangeobject.c bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587) 2020-12-01 10:37:39 +01:00
setobject.c bpo-43198: Revert 3dd2157 that removed freeslot tracking. (#25010) 2021-03-24 15:33:27 -07:00
sliceobject.c bpo-43268: Pass interp rather than tstate to internal functions (GH-24580) 2021-02-19 15:10:45 +01:00
structseq.c bpo-42128: Add __match_args__ to structseq-based classes (GH-24732) 2021-03-04 00:03:44 +00:00
tupleobject.c bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917) 2021-02-26 14:51:55 -08:00
typeobject.c bpo-43636: Validate the version tag in _PyType_Lookup (GH-25032) 2021-03-27 03:51:46 +00:00
typeslots.inc bpo-41073: PyType_GetSlot() can now accept static types. (GH-21931) 2020-11-10 12:53:46 -08:00
typeslots.py bpo-41073: PyType_GetSlot() can now accept static types. (GH-21931) 2020-11-10 12:53:46 -08:00
unicodectype.c Removed unintentional trailing spaces in non-external and non-generated C files. 2015-03-18 21:53:15 +02:00
unicodeobject.c bpo-43179: Generalise alignment for optimised string routines (GH-24624) 2021-03-31 12:12:39 +02:00
unicodetype_db.h closes bpo-39926: Update Unicode to 13.0.0. (GH-18910) 2020-03-10 20:41:34 -07:00
unionobject.c bpo-42195: Disallow isinstance/issubclass for subclasses of genericaliases in Union (GH-24059) 2021-01-02 08:19:15 -08:00
weakrefobject.c bpo-40523: Add pass-throughs for hash() and reversed() to weakref.proxy objects (GH-19946) 2020-05-05 22:58:19 +01:00

README 

Source files for various builtin objects