Re: strange behaviour after upgrade to 0.444

On Fri, Sep 05, 2008 at 03:08:58PM +0200, Sirko Zidlewitz wrote:
> Obviously for all files containing subscribers
> and moderators, the algorithm deciding about the
> letter for the filenames changed.
> 
> And yes, the list is running on Freebsd 6.3 for AMD64.

Between version 0.441 and 0.442, I unintentionally introduced a change
in how subscriber addresses are hashed into the filename letter.  In
version 0.441 and prior, the hash was calculated in multiple places as a
uint32, resulting in the same value on both 32-bit and 64-bit
architectures.  In version 0.442, I merged those calculations, but
changed the internal state to an unsigned long.  On AMD64 (and
effectively all other 64-bit systems), this altered the calculation
resulting in different hashes.

Version 0.442 was released on 2005-07-12, but the 32-bit vs 64-bit
difference was not discovered for over a year, since using exclusively
one or the other would still work fine.  Somebody was trying to access
the same subscriber lists from both a 32-bit and 64-bit system, and
encountered a similar problem to you.

The problem is how to correct it.  I agree it is a bug in the software,
and that 32-bit software should have the same list handling as 64-bit
software.  However, doing so would break all existing lists on 64-bit
boxes.  I've come to the conclusion that that solution is worse than the
problem.

See:
http://lists.untroubled.org/?list=ezmlm&cmd=showthread&month=200608&threadid=hcemonicddnaibbocmko
http://lists.untroubled.org/?list=ezmlm&cmd=showthread&month=200710&threadid=ljbhggmiioomfgoepocp

-- 
Bruce Guenter <[email protected]>                http://untroubled.org/

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