[Cython] Cython 0.15 release candidate

[mark florisson]

On 29 July 2011 20:06, Robert Bradshaw <robertwb at math.washington.edu> wrote:
> On Fri, Jul 29, 2011 at 1:33 AM, mark florisson
> <markflorisson88 at gmail.com> wrote:
>> On 25 July 2011 08:03, Arfrever Frehtes Taifersar Arahesis
>> <arfrever.fta at gmail.com> wrote:
>>> There are 4 test failures with Python 2.6, 2.7, 3.1 and 3.2.
>>> Output with Python 2.7:
>>>
>>> ======================================================================
>>> FAIL: test_nested_break_continue (line 331) (parallel.__test__)
>>> Doctest: parallel.__test__.test_nested_break_continue (line 331)
>>> ----------------------------------------------------------------------
>>> Traceback (most recent call last):
>>>  File "/usr/lib64/python2.7/doctest.py", line 2166, in runTest
>>>    raise self.failureException(self.format_failure(new.getvalue()))
>>> AssertionError: Failed doctest test for parallel.__test__.test_nested_break_continue (line 331)
>>>  File "/var/tmp/portage/dev-python/cython-0.15_rc0/work/Cython-0.15rc0/tests-2.7/run/c/parallel.so", line unknown line number, in test_nested_break_continue (line 331)
>>>
>>> ----------------------------------------------------------------------
>>> File "/var/tmp/portage/dev-python/cython-0.15_rc0/work/Cython-0.15rc0/tests-2.7/run/c/parallel.so", line ?, in parallel.__test__.test_nested_break_continue (line 331)
>>> Failed example:
>>>    test_nested_break_continue()
>>> Expected:
>>>    6 7 6 7
>>>    8
>>> Got:
>>>    6 0 -1160725808 -1160725808
>>>    8
>>>
>>>
>>> ======================================================================
>>> FAIL: test_propagation (line 49) (parallel.__test__)
>>> Doctest: parallel.__test__.test_propagation (line 49)
>>> ----------------------------------------------------------------------
>>> Traceback (most recent call last):
>>>  File "/usr/lib64/python2.7/doctest.py", line 2166, in runTest
>>>    raise self.failureException(self.format_failure(new.getvalue()))
>>> AssertionError: Failed doctest test for parallel.__test__.test_propagation (line 49)
>>>  File "/var/tmp/portage/dev-python/cython-0.15_rc0/work/Cython-0.15rc0/tests-2.7/run/c/parallel.so", line unknown line number, in test_propagation (line 49)
>>>
>>> ----------------------------------------------------------------------
>>> File "/var/tmp/portage/dev-python/cython-0.15_rc0/work/Cython-0.15rc0/tests-2.7/run/c/parallel.so", line ?, in parallel.__test__.test_propagation (line 49)
>>> Failed example:
>>>    test_propagation()
>>> Expected:
>>>    (9, 9, 9, 9, 450, 450)
>>> Got:
>>>    (9, 0, 9, -1160725808, 0, 0)
>>>
>>>
>>> ======================================================================
>>> FAIL: test_nested_break_continue (line 331) (parallel.__test__)
>>> Doctest: parallel.__test__.test_nested_break_continue (line 331)
>>> ----------------------------------------------------------------------
>>> Traceback (most recent call last):
>>>  File "/usr/lib64/python2.7/doctest.py", line 2166, in runTest
>>>    raise self.failureException(self.format_failure(new.getvalue()))
>>> AssertionError: Failed doctest test for parallel.__test__.test_nested_break_continue (line 331)
>>>  File "/var/tmp/portage/dev-python/cython-0.15_rc0/work/Cython-0.15rc0/tests-2.7/run/cpp/parallel.so", line unknown line number, in test_nested_break_continue (line 331)
>>>
>>> ----------------------------------------------------------------------
>>> File "/var/tmp/portage/dev-python/cython-0.15_rc0/work/Cython-0.15rc0/tests-2.7/run/cpp/parallel.so", line ?, in parallel.__test__.test_nested_break_continue (line 331)
>>> Failed example:
>>>    test_nested_break_continue()
>>> Expected:
>>>    6 7 6 7
>>>    8
>>> Got:
>>>    6 0 -1160725808 -1160725808
>>>    8
>>>
>>>
>>> ======================================================================
>>> FAIL: test_propagation (line 49) (parallel.__test__)
>>> Doctest: parallel.__test__.test_propagation (line 49)
>>> ----------------------------------------------------------------------
>>> Traceback (most recent call last):
>>>  File "/usr/lib64/python2.7/doctest.py", line 2166, in runTest
>>>    raise self.failureException(self.format_failure(new.getvalue()))
>>> AssertionError: Failed doctest test for parallel.__test__.test_propagation (line 49)
>>>  File "/var/tmp/portage/dev-python/cython-0.15_rc0/work/Cython-0.15rc0/tests-2.7/run/cpp/parallel.so", line unknown line number, in test_propagation (line 49)
>>>
>>> ----------------------------------------------------------------------
>>> File "/var/tmp/portage/dev-python/cython-0.15_rc0/work/Cython-0.15rc0/tests-2.7/run/cpp/parallel.so", line ?, in parallel.__test__.test_propagation (line 49)
>>> Failed example:
>>>    test_propagation()
>>> Expected:
>>>    (9, 9, 9, 9, 450, 450)
>>> Got:
>>>    (9, 0, 9, -1160725808, 0, 0)
>>>
>>>
>>> ----------------------------------------------------------------------
>>> Ran 5554 tests in 1509.246s
>>>
>>> FAILED (failures=4)
>>> ALL DONE
>>>
>>> --
>>> Arfrever Frehtes Taifersar Arahesis
>>>
>>> _______________________________________________
>>> Cython-dev mailing list
>>> Cython-dev at codespeak.net
>>> http://codespeak.net/mailman/listinfo/cython-dev
>>>
>>>
>>
>> Unfortunately due to a bug in gcc 4.5, Dag and I have concluded that
>> we must disable nested parallelism support in Cython, as there is no
>> suitable workaround. (The issue is that the bug doesn't propagate
>> lastprivates, which results in random values for inner privates.) The
>> reduction fails in the test due to yet another bug, which can be
>> worked around easily.
>
> Nice sleuthing, and thanks Arfrever for the bug report. Glad these were caught.
>
>> So Robert, please wait with the next release candidate until I have
>> disabled nesting and the corresponding tests and documentation.
>
> Any ETA here? (I was ironically thinking about pushing out another RC
> today, but there's no huge hurry.)
>
> - Robert
> _______________________________________________
> cython-devel mailing list
> cython-devel at python.org
> http://mail.python.org/mailman/listinfo/cython-devel
>

I pushed to master, but the docs are out of date, so I'm updating
them. I also want to run the testsuite with gcc-4.5, and finally have
a look at those numpy issues.

At least the bug is fixed now in 4.5:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49897 . A pretty quick
fix!