[Cbc] Some issues with cbc 2.2.2 release

[John J Forrest]

Torsten

So far not able to reproduce bug with arki001.

Fixed first assertion problem.  Not very clever of me - if you look at
assert message you will see just one = , not == !  So assert only fails if
problem has zero rows, but then will always fail.


John

                                                                                                                 
  From:       "Torsten Fahle" <Torsten.Fahle at inform-ac.com>                                                      
                                                                                                                 
  To:         <cbc at list.coin-or.org>                                                                             
                                                                                                                 
  Date:       04/28/2009 01:14 PM                                                                                
                                                                                                                 
  Subject:    [Cbc] Some issues with cbc 2.2.2 release                                                           
                                                                                                                 





Hi,

during tests we found some issues in the cbc 2.2.2 release packet. They are
reported in the trac system
* an assertion `numberRows=basis->getNumArtificial()' fails in
preprocessing on miplib2003/seymour (#74 only linux, not windows)
* an uninitialized variable in liftAndProjekt cuts on miplib2003/fiber,
sometimes crashes afterwards. There are several if-blocks where that
   var is assigned a value. However, some cases in fiber.mps don't fit to
any of these blocks. (#76, linux and windows)
* assertion fail in updateDualsInDuals during branch-and-cut on
miplib2003/arki001  (#77 only testet on linux)
* crashes with bad_alloc exception on windows (not easy to reproduce, maybe
a pure windows issue as no problem on linux) (#75, reported for a1c1s1, but
also (rarely) occurring on other instances of miplib2003)

I will be happy to provide more information if needed

Thanks,

  Torsten


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