On 21/03/2017 11:46, Marius Gedminas wrote:
On Mon, Mar 20, 2017 at 11:30:59AM +0000, Robin Becker wrote:
.........
I'm sure the reproducible builds folks will send you patches if they
find any spots that you missed. ;-)
Is there a way to excite dictionary ordering changes? I believe there was
some way to modify the hashing introduced when the dos dictionary attacks
were an issue. Would it be sufficient to generate documents with say Python
2.7 and check against 3.6?
Python 3.6 changed the dict implementation so the ordering is always stable
(and matches insertion order).
You'll want to test with Python 3.5, which perturbs the dict ordering
randomly, as a side effect of the randomized string/bytes hashes (unless
you fix it by setting the PYTHONHASHSEED environment variable[*])
[*] https://docs.python.org/3.3/using/cmdline.html#envvar-PYTHONHASHSEED
.......
thanks for this Marius; having started on the reproducibility trail I find the
python 3.x output has more mismatches than I like ('cos of missed bugs).
--
Robin Becker
_______________________________________________
Distutils-SIG maillist - Distutils-SIG@python.org
https://mail.python.org/mailman/listinfo/distutils-sig
