On Tue, Jul 21, 2009 at 9:51 AM, Dr. David
Kirkby<david.kir...@onetel.net> wrote:
>
> Sometimes when I create a patch, or look at work of others, I see
> potential issues that might come back to haunt us at a later date. For
> example.
>
> 1) Whilst updating a polybori patch, I noticed something done some time
> back, that I think might have an impact on Solaris. I don't have the
> time to check it fully. It would only happen if Sage is built in debug
> mode. It's hardly a critical issue, but I think it worth noting.
>
> 2) I'm applying a patch to pari, which involves commenting out a couple
> of lines of code that cause hassle on Solaris when building the
> 'modified sage library code'.
>
> The patch was suggested by William, it does work, but I think it is fair
> to say neither of us have really investigated the effect this might
> have. To do so would be huge amount of work, and probably result in the
> conclusion it can't hurt.

I can't remember now exactly what I did, but I think that it was *not*
ever my intention that this actually get into Sage.  It was just meant
to be a quick hack to get passed that point and finish building Sage.
One should figure out a correct fix by consulting with the pari
developers who are very very responsive.


>
> 3) I was going to apply a patch to singular, which is a bit of a hack.
> It will work and will never cause any problems, but it is far from
> clean. A better solution would be to resolve the underlying problems,
> which are probably an autoconf bug or a bug in the singular build
> system. Someone else is looking into that one, but the fix is not going
> to be immediate.
>
> 4) An atlas patch will have a (I believe small) impact on Solaris sun4v
> systems, and if Sun can sort out the library, will no longer be needed.
>
> It seems to me there should be a central location where people can add
> to a list of potential problems that might just come back to bit us in
> the future.
>
> Perhaps one trac ticket 'Potential issues in X' and another 'Potential
> issues in Y' where anyone adds any potential issues they see, which
> might be a problem in package X or Y at some later date, but which are
> of low priority, or unlikely to occur.
>
> Dave
>
> >
>



-- 
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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