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Re: 5.8.2 and 5.8.n binary compatibility

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Alan Burlison
November 3, 2003 13:15
Re: 5.8.2 and 5.8.n binary compatibility
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Jan Dubois wrote:

>>that in this case it can be entirely avoided, and if it can't be entirely 
>>avoided I'd prefer 100% breakage instead of random nasty surprises.  Even if 
>>the various fixes *appear* to work I'd not be prepared to trust them myself 
>>anyway, I'd recompile.
> I think Nick's new hashing code is binary compatible with both 5.8.0 and
> 5.8.1.  In this case I don't see a reason for breaking it in the future.
> Just handwaving "it only *appears* to work" seems a little insulting to
> Nick's hard work, unless you can explain where you expect it to fail.

I think Nick and Stas and all the other people who have weighed in have done 
an excellent job, however mod_perl makes me nervous at the best of times, 
and this makes me doubly nervous.  It looks to be very hard to get it right 
- for example Stas mentioned that the hashing stuff has to be working before 
a perl interpreter is even created for mod_perl - bu then again I'm just a 
natural pessimist ;-)  I also wonder if we will hit any snags in  things 
like Tk and DBI.  I hope and pray it works, but we (Solaris) have a ~3 year 
release cycle, customers don't like to patch or upgrade.  Thankfully we have 
a bit of time before the go/no go for Solaris.

>>I care about it in general because if binary compatibility is broke I have 
>>to ship two versions of perl, and that is more more aggro for me.
> I totally understand.  That's why it is important to keep compatibility
> for those who are already using 5.8.0. :)

I agree 100% with that.  If we have to blow 5.8.2 out of the water to 
preserve 5.8.0 bincompat, so be it.

Alan Burlison

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