[tor-dev] Tor project automation work

Lunar lunar at torproject.org
Tue Dec 10 16:38:57 UTC 2013

Nicolas Vigier:
> Ok, we can have a test rebuilding several times the files that are most
> likely to become non deterministic. However it would be better if we can
> find some way to trigger those non-deterministic builds with only two
> builds. Maybe we can try something like this :
> - a library that we put in LD_PRELOAD as a wrapper on readdir to return
>   directory entries in random order instead of inodes number, so it's
>   more likely to be different on each build.
> - a python library that we put in PYTHONPATH, to override dict.iterkeys
>   to return keys in random order. If I understand ticket #10159
>   correctly, it was caused by iterkeys returning keys in the same order
>   most of the time, but not all the times.

I would suggest using reverse order instead of random order. Random
order has the probability of being just like the original order.
For readdir(3), have a look at:

Lunar                                             <lunar at torproject.org>
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