[Clp] Regression with the current trunk.

[John Forrest]

I can't see it being anything other than CoinPresolveDual.cpp changes - 
dual presolve being tricky.

I could back it out, but it was helping on some difficult problems, so I 
would prefer to fix it.

Is it easy for you to give me code/problem that breaks?

Regards,

John Forrest



On 13/08/14 16:19, ycollette.nospam at free.fr wrote:
> Hello,
>
> I was testing the current trunk of clp against our tool.
> And with the current trunk version, I noticed a regression on some tests.
> After trying to understand what was the problematic part I finally bisected the CoinUtils code until commit 1699.
>
> r1699 | forrest | 2014-05-22 19:06:09 +0200 (jeu. 22 mai 2014) | 2 lignes
>
>   changes to presolve - hopefully good ones
>
> Before this commit, there are no problems in our test base, after, some tests are failling.
> I just bisected the coinutils code. I leave the clp code untouched. So, the problem seems to be really located into coinutils.
>
> Best regards,
>
> YC
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