Fix a race condition on setting a type __bases__ attribute: the
internal function add_subclass() now gets the
PyTypeObject.tp_subclasses member after calling PyWeakref_NewRef()
which can trigger a garbage collection which can indirectly modify
PyTypeObject.tp_subclasses.
(cherry picked from commit f1c6ae3270)
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Victor Stinner <vstinner@python.org>
The docstrings for MappingProxyType's keys(), values(), and items()
methods were never updated to reflect the changes that Python 3 brought
to these APIs, namely returning views rather than lists.
(cherry picked from commit 2d10fa9bc4)
Co-authored-by: Joshua Bronson <jabronson@gmail.com>
* Use Py_EnterRecursiveCall() in issubclass()
Reviewed-by: Gregory P. Smith <greg@krypto.org> [Google]
(cherry picked from commit 423fa1c181)
Co-authored-by: Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com>
They support now splitting escape sequences between input chunks.
Add the third parameter "final" in codecs.raw_unicode_escape_decode().
It is True by default to match the former behavior.
(cherry picked from commit 39aa98346d)
They support now splitting escape sequences between input chunks.
Add the third parameter "final" in codecs.unicode_escape_decode().
It is True by default to match the former behavior.
(cherry picked from commit c96d1546b1)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
It happened with fast range iterator when the calculated stop = start + step * len
was out of the C long range.
(cherry picked from commit 936f6a16b9)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* bpo-45083: Include the exception class qualname when formatting an exception (GH-28119)
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
(cherry picked from commit b4b6342848)
Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Fix a crash at Python exit when a deallocator function removes the
last strong reference to a heap type.
Don't read type memory after calling basedealloc() since
basedealloc() can deallocate the type and free its memory.
_PyMem_IsPtrFreed() argument is now constant.
(cherry picked from commit 615069eb08)
Co-authored-by: Victor Stinner <vstinner@python.org>
The non-GC-type branch of subtype_dealloc is using the type of an object after freeing in the same unsafe way as GH-26274 fixes. (I believe the old news entry covers this change well enough.)
https://bugs.python.org/issue44184
(cherry picked from commit 074e7659f2)
Co-authored-by: T. Wouters <thomas@python.org>
(cherry picked from commit d33943a6c3)
Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
(cherry picked from commit 5924243199)
Co-authored-by: Mark Dickinson <mdickinson@enthought.com>
Co-authored-by: Mark Dickinson <mdickinson@enthought.com>
These are passed and called as PyCFunction, however they are defined here without the (ignored) args parameter.
This works fine in some C compilers, but fails in webassembly or anything else that has strict function pointer call type checking.
(cherry picked from commit ab383eb6f0)
Co-authored-by: Joe Marshall <joe.marshall@nottingham.ac.uk>
Co-authored-by: Joe Marshall <joe.marshall@nottingham.ac.uk>
Accessing the following attributes will now fire PEP 578 style audit hooks as (object.__getattr__, obj, name):
* PyTracebackObject: tb_frame
* PyFrameObject: f_code
* PyGenObject: gi_code, gi_frame
* PyCoroObject: cr_code, cr_frame
* PyAsyncGenObject: ag_code, ag_frame
Before, using the * operator to repeat a bytearray would copy data from the start of
the internal buffer (ob_bytes) and not from the start of the actual data (ob_start).
(cherry picked from commit 61d8c54f43)
Co-authored-by: Tobias Holl <TobiasHoll@users.noreply.github.com>
Python no longer fails at startup with a fatal error if a command
line argument contains an invalid Unicode character.
The Py_DecodeLocale() function now escapes byte sequences which would
be decoded as Unicode characters outside the [U+0000; U+10ffff]
range.
Use MAX_UNICODE constant in unicodeobject.c.
(cherry picked from commit 9976834f80)
Co-authored-by: Victor Stinner <vstinner@python.org>
Fix warning:
Objects\exceptions.c(2324,56): warning C4098:
'MemoryError_dealloc': 'void' function returning a value
(cherry picked from commit bbeb223e9a)
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Victor Stinner <vstinner@python.org>
Several built-in and standard library types now ensure that their internal result tuples are always tracked by the garbage collector:
- collections.OrderedDict.items
- dict.items
- enumerate
- functools.reduce
- itertools.combinations
- itertools.combinations_with_replacement
- itertools.permutations
- itertools.product
- itertools.zip_longest
- zip
Previously, they could have become untracked by a prior garbage collection.
(cherry picked from commit 226a012d1c)
Use `_PyArg_NoKeywords` instead of `_PyArg_NoKwnames` when checking the `kwds` tuple when creating `GenericAlias`. This fixes an interpreter crash when passing in keyword arguments to `GenericAlias`'s constructor.
Needs backport to 3.9.
Automerge-Triggered-By: GH:gvanrossum
(cherry picked from commit 804d6893b8)
Co-authored-by: kj <28750310+Fidget-Spinner@users.noreply.github.com>
* There were leaks if Py_tp_bases is used more than once or if some call is
failed before setting tp_bases.
* There was a crash if the bases argument or the Py_tp_bases slot is not a tuple.
* The documentation was not accurate.
(cherry picked from commit 1db76394ea)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Signed-off-by: Christian Heimes <christian@python.org>
Automerge-Triggered-By: GH:tiran
(cherry picked from commit 07f2adedf0)
Co-authored-by: Christian Heimes <christian@python.org>
func_dealloc() does not handle partially-created objects. Best not to give it any.
(cherry picked from commit 350526105f)
Co-authored-by: Yonatan Goldschmidt <yon.goldschmidt@gmail.com>
