[3.14] gh-144330: Initialize classmethod and staticmethod in new (GH-144498)
gh-144330: Initialize classmethod and staticmethod in new
Initialize cm_callable and sm_callable to None in classmethod and
staticmethod constructor.
(cherry picked from commit 160810de89)
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Aniket Singh Yadav <singhyadavaniket43@gmail.com>
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
gh-102809: No longer mention `Misc/gdbinit` in the code (GH-143980)
Fix misleading comment on `PyObject_Dump`.
(cherry picked from commit f84ea11071)
Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>
Remove outdated comment about `excess_args` warning in `object.__init__` (GH-143669)
The code emitting a warning was removed in 96384b93aa.
(cherry picked from commit 03e6457096)
Co-authored-by: Manuel Jacob <me@manueljacob.de>
When comparing negative non-integer float and int with the same number
of bits in the integer part, __neg__() in the int subclass returning
not an int caused an assertion error.
Now the integer is no longer negated. Also, reduced the number of
temporary created Python objects.
(cherry picked from commit 66bca383bd)
When __length_hint__() returns 0 for non-empty iterator, the data can be
written past the shared 0-terminated buffer, corrupting it.
(cherry picked from commit 522563549a)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This fixes a regression introduced in gh-140558. The interpreter would
crash if we inserted a non `str` key into a split table that matches an
existing key.
(cherry picked from commit 547d8daf78)
gh-140815: Fix faulthandler for invalid/freed frame (#140921)
faulthandler now detects if a frame or a code object is invalid or
freed.
Add helper functions:
* _PyCode_SafeAddr2Line()
* _PyFrame_SafeGetCode()
* _PyFrame_SafeGetLasti()
_PyMem_IsPtrFreed() now detects pointers in [-0xff, 0xff] range
as freed.
(cherry picked from commit a84181c31b)
Currently, there are a few places where tp_mro could theoretically
become NULL, but do not in practice. This commit adds defensive checks for
NULL values to ensure that any changes do not introduce a crash and that
state invariants are upheld.
The assertions added in this commit are all instances where a NULL value would get passed to something not expecting a NULL, so it is better to catch an assertion failure than crash later on.
There are a few cases where it is OK for the return of lookup_tp_mro to be NULL, such as when passed to is_subtype_with_mro, which handles this explicitly.
(cherry picked from commit a8edca62fc)
Co-authored-by: Emma Smith <emma@emmatyping.dev>
GH-140058: Clear key and value if `PyTuple_New` fails in `dictiter_iternextitem` (GH-140059)
(cherry picked from commit ded59f7e8e)
Co-authored-by: Sergey Miryanov <sergey.miryanov@gmail.com>
gh-71810: Fix _PyLong_AsByteArray() undefined behavior (GH-138873)
Don't read p[-1] when p is an empty string: when n==0.
(cherry picked from commit 8b5ce31c2b)
Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-138479: Ensure that `__typing_subst__` returns a tuple (GH-138482)
Raise an exception if __typing_subst__ returns a non-tuple object.
(cherry picked from commit 1da989be74)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-58124: Avoid CP_UTF8 in UnicodeDecodeError (GH-137415)
Fix name of the Python encoding in Unicode errors of the code page
codec: use "cp65000" and "cp65001" instead of "CP_UTF7" and "CP_UTF8"
which are not valid Python code names.
(cherry picked from commit ce1b747ff6)
Co-authored-by: Victor Stinner <vstinner@python.org>
The free threading build uses QSBR to delay the freeing of dictionary
keys and list arrays when the objects are accessed by multiple threads
in order to allow concurrent reads to proceed with holding the object
lock. The requests are processed in batches to reduce execution
overhead, but for large memory blocks this can lead to excess memory
usage.
Take into account the size of the memory block when deciding when to
process QSBR requests.
Also track the amount of memory being held by QSBR for mimalloc pages.
Advance the write sequence if this memory exceeds a limit. Advancing
the sequence will allow it to be freed more quickly.
Process the held QSBR items from the "eval breaker", rather than from
`_PyMem_FreeDelayed()`. This gives a higher chance that the global read
sequence has advanced enough so that items can be freed.
(cherry picked from commit 113de8545f)
Co-authored-by: Neil Schemenauer <nas-github@arctrix.com>
Co-authored-by: Sam Gross <colesbury@gmail.com>
