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This PR contains the following updates:
==0.29.33
->==3.0.5
Release Notes
cython/cython (cython)
v3.0.5
Compare Source
==================
Features added
(Github issue :issue:
5767
)Bugs fixed
A compiler crash was fixed.
(Github issue :issue:
5771
)A typo in the
always_allow_keywords
directive for Python code was fixed.Patch by lk-1984. (Github issue :issue:
5772
)Some C compiler warnings were resolved.
Patch by Pierre Jolivet. (Github issue :issue:
5780
)v3.0.4
Compare Source
==================
Features added
show_performance_hints
was added to disable thenewly added performance hint output.
(Github issue :issue:
5748
)Bugs fixed
```cythonize
required ``distutils`` even for operations that did not build binaries. (Github issue :issue:
5751`)A regression in 3.0.3 was fixed that prevented calling inline functions
from another inline function in
.pxd
files.(Github issue :issue:
5748
)Some C compiler warnings were resolved.
Patch by Pierre Jolivet. (Github issue :issue:
5756
)v3.0.3
Compare Source
==================
Features added
More warnings were added to help users migrate and avoid bugs.
(Github issue :issue:
5650
)A warning-like category for performance hints was added that bypasses
-Werror
.(Github issue :issue:
5673
)FastGIL now uses standard
thread_local
in C++.(Github issue :issue:
5640
)reference_wrapper
was added tolibcpp.functional
.Patch by Vyas Ramasubramani. (Github issue :issue:
5671
)The
cythonize
command now supports the--cplus
option known from thecython
command.(Github issue :issue:
5736
)Bugs fixed
Performance regressions where the GIL was needlessly acquired were fixed.
(Github issues :issue:
5670
, :issue:5700
)A reference leak for exceptions in Python 3.12 was resolved.
Patch by Eric Johnson. (Github issue :issue:
5724
)fastcall
calls with keyword arguments generated incorrect C code.(Github issue :issue:
5665
)Assigning the type converted result of a conditional (if-else) expression
to
int
orbool
variables could lead to incorrect C code.(Github issue :issue:
5731
)Early (unlikely) failures in Python function wrappers no longer set a
traceback in order to simplify the C code flow. Being mostly memory
allocation errors, they probably would never have created a traceback anyway.
(Github issue :issue:
5681
)Relative cimports from packages with
__init__.py
files could fail.(Github issue :issue:
5715
)Several issues with the Limited API support were resolved.
(Github issues :issue:
5641
, :issue:5648
, :issue:5689
)The code generated for special-casing both Cython functions and PyCFunctions was cleaned up
to avoid calling C-API functions that were not meant for the other type respectively.
This could previously trigger assertions in CPython debug builds and now also plays better
with the Limited API.
(Github issues :issue:
4804
, :issue:5739
)Fix some C compiler warnings.
Patches by Ralf Gommers, Oleksandr Pavlyk, Sebastian Koslowski et al.
(Github issues :issue:
5651
, :issue:5663
, :issue:5668
, :issue:5717
, :issue:5726
, :issue:5734
)Generating gdb debugging information failed when using generator expressions.
Patch by Oleksandr Pavlyk. (Github issue :issue:
5552
)Passing a
setuptools.Extension
intocythonize()
instead of adistutils.Extension
could make it miss the matching extensions.cython -M
needlessly requireddistutils
, which made it fail in Python 3.12.(Github issue :issue:
5681
)Other changes
The visible deprecation warning for
DEF
was removed again since it proveddifficult for some users to migrate away from it. The statement is still
meant to be removed at some point (and thus, like
IF
, should not beused in new code), but the time for sunset is probably not around the corner.
(Github issue :issue:
4310
)The
np_pythran
option raise aDeprecationWarning
if it receives other valuesthan
True
andFalse
. This will eventually be disallowed (in line with allother boolean options).
v3.0.2
Compare Source
==================
Bugs fixed
Using
None
as default value for arguments annotated asint
could crash Cython.(Github issue :issue:
5643
)Default values of fused types that include
complex
could generate invalid C codewith
-DCYTHON_CCOMPLEX=0
.(Github issue :issue:
5644
)Using C++ enum class types in extension type method signatures could generate invalid C code.
(Github issue :issue:
5637
)v3.0.1
Compare Source
==================
Features added
better help about possible reasons and fixes.
(Github issue :issue:
5547
)Bugs fixed
Memory view types in Python argument annotations no longer accept
None
. They nowrequire an explicit
Optional[]
or aNone
default value in order to allowNone
to be passed. This was an oversight in the 3.0.0 release and is a BACKWARDS INCOMPATIBLE
change. However, since it only applies to code using Python syntax, it probably only
applies to newly written code that was written for Cython 3.0 and can easily be adapted.
In most cases, we expect that this change will avoid bugs in user code rather than
produce problems.
(Github issue :issue:
5612
)nogil
functions using parallel code could freeze when called with the GIL held.(Github issues :issue:
5564
, :issue:5573
)Relative cimports could end up searching globally and find the same package installed
elsewhere, potentially in another version.
(Github issue :issue:
5511
)Attribute lookups on known standard library modules could accidentally search
in the module namespace instead.
(Github issue :issue:
5536
)Using constructed C++ default arguments could generate invalid C++ code.
(Github issue :issue:
5553
)libcpp.memory.make_unique()
was lacking C++ exception handling.(Github issue :issue:
5560
)Some non-public and deprecated CAPI usages were replaced by public
(and thus more future proof) API code.
Many issues with the Limited API support were resolved.
Patches by Lisandro Dalcin et al.
(Github issues :issue:
5549
, :issue:5550
, :issue:5556
, :issue:5605
, :issue:5617
)Some C compiler warnings were resolved.
Patches by Matti Picus et al. (Github issues :issue:
5557
, :issue:5555
)Large Python integers are now stored in hex instead of decimal strings to work around
security limits in Python and generally speed up their Python object creation.
NULL
could not be used as default for fused type pointer arguments.(Github issue :issue:
5554
)C functions that return pointer types now return
NULL
as default exception value.Previously, calling code wasn't aware of this and always tested for raised exceptions.
(Github issue :issue:
5554
)Untyped literal default arguments in fused functions could generate invalid C code.
(Github issue :issue:
5614
)C variables declared as
const
could generate invalid C code when used in closures,generator expressions, ctuples, etc.
(Github issues :issue:
5558
, :issue:5333
)Enums could not refer to previously defined enums in their definition.
(Github issue :issue:
5602
)The Python conversion code for anonymous C enums conflicted with regular int conversion.
(Github issue :issue:
5623
)Using memory views for property methods (and other special methods) could lead to
refcounting problems.
(Github issue :issue:
5571
)Star-imports could generate code that tried to assign to constant C macros like
PY_SSIZE_T_MAX
andPY_SSIZE_T_MIN
.Patch by Philipp Wagner. (Github issue :issue:
5562
)CYTHON_USE_TYPE_SPECS
can now be (explicitly) enabled in PyPy.The template parameter "delimeters" in the Tempita
Template
class was correctedto "delimiters". The old spelling is still available in the main template API but
now issues a
DeprecationWarning
.(Github issue :issue:
5608
)The
cython --version
output is now less likely to reach both stdout and stderr.Patch by Eli Schwartz. (Github issue :issue:
5504
)The sdist was missing the
Shadow.pyi
stub file.v3.0.0
Compare Source
===========================
Cython 3.0.0 has been a very large effort that cleaned up many old warts,
introduced many new features, and introduces a couple of intentional
behaviour changes, even though the goal remained to stay compatible as
much as possible with Cython 0.29.x. For details, see the
migration guide
_... _
migration guide
: https://cython.readthedocs.io/en/latest/src/userguide/migrating_to_cy30.htmlAs the development was spread out over several years, a lot of things have
happened in the meantime. Many crucial bugfixes and some features were
backported to 0.29.x and are not strictly speaking "new" in Cython 3.0.0.
v0.29.36
Compare Source
====================
Bugs fixed
Async generators lost their return value in PyPy.
(Github issue :issue:
5465
)The outdated C macro
_PyGC_FINALIZED()
is no longer used in Py3.9+.The deprecated
Py_OptimizeFlag
is no longer used in Python 3.9+.(Github issue :issue:
5343
)Using the global
__debug__
variable but not assertions could lead to compile errors.The broken HTML template support was removed from Tempita.
(Github issue :issue:
3309
).. _0.29.35:
v0.29.35
Compare Source
====================
Bugs fixed
A garbage collection enabled subtype of a non-GC extension type could call into the
deallocation function of the super type with GC tracking enabled. This could lead
to crashes during deallocation if GC was triggered on the type at the same time.
(Github issue :issue:
5432
)Some C compile failures and crashes in CPython 3.12 were resolved.
except + nogil
was syntactically not allowed.except +nogil
(i.e. defining a C++ exception handling function callednogil
)is now disallowed to prevent typos.
(Github issue :issue:
5430
)A C compile failure in PyPy 3.10 was resolved.
Patch by Matti Picus. (Github issue :issue:
5408
)Cython modules now use PEP-489 multi-phase init by default in PyPy 3.9 and later.
Original patch by Matti Picus. (Github issue :issue:
5413
)API header files generated by different Cython versions can now be included in the
same C file.
(Github issue :issue:
5383
)Function signatures containing a type like
tuple[()]
could not be printed.Patch by Lisandro Dalcin. (Github issue :issue:
5355
).. _0.29.34:
v0.29.34
Compare Source
====================
Bugs fixed
A reference leak of the for-loop list/tuple iterable was resolved if the for-loop's
else:
branch executes abreak
for an outer loop.(Github issue :issue:
5347
)Some C compile failures in CPython 3.12 were resolved.
Some old usages of the deprecated Python
imp
module were replaced withimportlib
.Patch by Matúš Valo. (Github issue :issue:
5300
)Some issues with
depfile
generation were resolved.Patches by Eli Schwartz. (Github issues :issue:
5279
, :issue:5291
).. _0.29.33:
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