[Python-Dev] test_io fails on test_1686475

Robert Collins robertc at robertcollins.net
Sun Mar 1 23:43:47 CET 2009

On Sun, 2009-03-01 at 23:04 +0100, Cesare Di Mauro wrote:
> Running the test suite with Python 2.6.1 32 bit (compiled in DEBUG mode
> with Visual Studio Express Edition 2008) on Vista x64, I've got an assert
> error:
> test_1686475 (__main__.StatAttributeTests) ... Assertion failed:
> (__int64)(int)((in / 10000000) - secs_between_epochs) == ((in / 10000000)
> - secs_between_epochs), file ..\Modules\posixmodule.c, line 790
> I have no idea about this failure. Any hint?

[I haven't checked the test yet, let me know if my guess is wrong :)].
It looks to me that its asserting something to do with stat times; note
that windows has up to a 2 second granularity for stat times on files -
you may be hitting some code that assumes a sane file system :)

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