[Cython] Cython 0.15 release candidate

[Robert Bradshaw]

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