[3.12] gh-127563: use `dk_log2_index_bytes=3` in empty dicts (GH-127568) (GH-127813)
This fixes a UBSan failure (unaligned zero-size memcpy) in `dictobject.c`.
(cherry picked from commit 9af96f440618304e7cc609c246e1f8c8b2d7a119)
(cherry picked from commit 320a1dcd97110598a4fe6ae1c0018cd3decc408f)
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
If the error handler is used, a new bytes object is created to set as
the object attribute of UnicodeDecodeError, and that bytes object then
replaces the original data. A pointer to the decoded data will became invalid
after destroying that temporary bytes object. So we need other way to return
the first invalid escape from _PyUnicode_DecodeUnicodeEscapeInternal().
_PyBytes_DecodeEscape() does not have such issue, because it does not
use the error handlers registry, but it should be changed for compatibility
with _PyUnicode_DecodeUnicodeEscapeInternal().
(cherry picked from commit 9f69a58623bd01349a18ba0c7a9cb1dad6a51e8e)
(cherry picked from commit 6279eb8c076d89d3739a6edb393e43c7929b429d)
(cherry picked from commit a75953b347716fff694aa59a7c7c2489fa50d1f5)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
[3.11] gh-108915: Removes extra backslashes in str.split docstring (GH-109044).
(cherry picked from commit e7d5433f944a5725aa82595f9251abfc8a63d333)
Co-authored-by: Daniel Weiss <134341009+justdan6@users.noreply.github.com>
Functions like PyErr_SetFromErrno() and SetFromWindowsErr() should be
called immediately after using the C API which sets errno or the Windows
error code.
(cherry picked from commit 2b15536fa94d07e9e286826c23507402313ec7f4)
[3.11] gh-105235: Prevent reading outside buffer during mmap.find() (GH-105252)
* Add a special case for s[-m:] == p in _PyBytes_Find
* Add tests for _PyBytes_Find
* Make sure that start <= end in mmap.find.
(cherry picked from commit ab86426a3472ab68747815299d390b213793c3d1)
Fix possible refleak in CodeType.replace() (GH-106243)
A reference to c_code was leaked if PySys_Audit() failed.
(cherry picked from commit 3c70d467c148875f2ce17bacab8909ecc3e9fc1d)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
[3.11] gh-106033: Get rid of new occurrences of PyDict_GetItem and PyObject_HasAttr (GH-106034)
These functions are broken by design because they discard any exceptions raised
inside, including MemoryError and KeyboardInterrupt. They should not be
used in new code..
(cherry picked from commit 1d33d5378058671bfabb6f4d4b5bfd4726973ff9)
Bail on first error to prevent exceptions from possibly being overwritten.
(cherry picked from commit 555be81026fe1205d16c02f6321221381174cd07)
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
gh-104018: remove unused format "z" handling in string formatfloat() (GH-104107)
This is a cleanup overlooked in PR GH-104033.
(cherry picked from commit 69621d1b09c996e43a1e13d2fa4c317d3dd4d738)
Co-authored-by: John Belmonte <john@neggie.net>
gh-104018: disallow "z" format specifier in %-format of byte strings (GH-104033)
PEP-0682 specified that %-formatting would not support the "z" specifier,
but it was unintentionally allowed for bytes. This PR makes use of the "z"
flag an error for %-formatting in a bytestring.
Issue: GH-104018
---------
(cherry picked from commit 3ed8c882902a6982fd67e898a5b8a2d619fb5ddf)
Co-authored-by: John Belmonte <john@neggie.net>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
[3.11] GH-101696: invalidate type version tag in `_PyStaticType_Dealloc` (GH-101697).
(cherry picked from commit d9de0792482d2ded364b0c7d2867b97a5da41b12)
Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
Fix the behaviour of the `__sizeof__` method (and hence the results returned
by `sys.getsizeof`) for subclasses of `int`. Previously, `int` subclasses gave
identical results to the `int` base class, ignoring the presence of the instance
dictionary.
(Manual backport of #101394 to the Python 3.11 branch.)
gh-101037: Fix potential memory underallocation for zeros of int subtypes (GH-101038)
This PR fixes object allocation in long_subtype_new to ensure that there's at least one digit in all cases, and makes sure that the value of that digit is copied over from the source long.
Needs backport to 3.11, but not any further: the change to require at least one digit was only introduced for Python 3.11.
Fixes GH-101037.
(cherry picked from commit 401fdf9c851eb61229250ebffa942adca99b36d1)
Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
gh-100637: Fix int and bool __sizeof__ calculation to include the 1 element ob_digit array for 0 and False (GH-100663)
Fixes behaviour where int (and subtypes like bool) __sizeof__ under-reports true size as it did not take into account the size 1 `ob_digit` array for the zero int.
(cherry picked from commit d7e7f79ca7c2029e46a06d21a7a5abea631b5d13)
Co-authored-by: Ionite <dev@ionite.io>
Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
