| msg93387 - (view) |
Author: Sridhar Ratnakumar (srid) |
Date: 2009-10-01 01:01 |
| This test failure occurs on Windows XP (x86) with 2.6.3.rc1 ====================================================================== ERROR: Test seek/tell using the StatefulIncrementalDecoder. ---------------------------------------------------------------------- Traceback (most recent call last): File "C:\Python26\lib\test\test_io.py", line 1063, in testSeekAndTell testSeekAndTellWithData(input) File "C:\Python26\lib\test\test_io.py", line 1043, in testSeekAndTellWithData decoded = f.read() File "C:\Python26\lib\io.py", line 1725, in read decoder = self._decoder or self._get_decoder() File "C:\Python26\lib\io.py", line 1514, in _get_decoder decoder = make_decoder(self._errors) File "C:\Python26\lib\test\test_io.py", line 636, in __init__ codecs.IncrementalDecoder.__init__(self, errors) AttributeError: 'NoneType' object has no attribute 'IncrementalDecoder' |
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| msg93397 - (view) |
Author: Antoine Pitrou (pitrou) *  |
Date: 2009-10-01 10:34 |
| This is something that sometimes happens when running the test suite due to module initialization or finalization oddities (I don't understand the precise reasons myself). It isn't specific to test_io, I think. |
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| msg104321 - (view) |
Author: STINNER Victor (vstinner) * |
Date: 2010-04-27 13:54 |
| Same error here: http://www.python.org/dev/buildbot/builders/AMD64 Ubuntu 2.6/builds/555/steps/test/logs/stdio (codecs_none.txt is a copy of stdio) |
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| msg104337 - (view) |
Author: STINNER Victor (vstinner) * |
Date: 2010-04-27 17:19 |
| This issue is specific to Python 2.6. It can be reproduced with: ./python -E -tt ./Lib/test/regrtest.py -l -w test_pep263 test_operator test_asynchat test_zipimport_support test_pydoc test_code test_dis test_quopri test_doctest test_class test_sax test_fileio test_asyncore test_mailbox test_abstract_numbers test_uuid test_io test_enumerate test_property test_codecs Or with this little test case: ---- import codecs, _codecs, sys, encodings encoding = "cp1252" codec = _codecs.lookup(encoding) modname = 'encodings.%s' % encoding __import__(modname) del sys.modules[modname] delattr(encodings, encoding) encoder = codecs.getincrementalencoder(encoding)() encoder.encode("", True) ---- module_dealloc() was modified in python trunk: the dictionary is only cleared if the reference counter is equal to 1. /* If we are the only ones holding a reference, we can clear the dictionary. */ if (Py_REFCNT(m->md_dict) == 1) _PyModule_Clear((PyObject *)m); |
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| msg104338 - (view) |
Author: STINNER Victor (vstinner) * |
Date: 2010-04-27 17:24 |
| module-dealloc() was changed by #7140 by r75437: "imp.new_module does not function correctly if the module is returned from a function and used directly". Can we backport the fix to 2.6? It would be complex to write a workaround in the tests. |
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| msg104339 - (view) |
Author: STINNER Victor (vstinner) * |
Date: 2010-04-27 17:42 |
| Here is a workaround. I didn't expected a short patch, but it's enough. |
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| msg104346 - (view) |
Author: STINNER Victor (vstinner) * |
Date: 2010-04-27 18:28 |
| > Can we backport the fix to 2.6? It's too late to fix such subtle bug in module machinery, so I commited my workaround in regrtest.py: r80538. Wait for the buildbots before closing the issue. test_io and/or test_codecs failed on buildbots: - AMD64 Ubuntu 2.6 (r80535) - x86 Tiger 2.6 (r80535) - x86 Windows7 2.6 (r80531) |
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| msg104358 - (view) |
Author: STINNER Victor (vstinner) * |
Date: 2010-04-27 20:54 |
| test_io and test_codecs didn't fail in the last build of x86 Tiger 2.6 and x86 Windows7 2.6. I suppose that the issue is now closed. Repopen the issue if it's not the case. |
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