[Cbc-tickets] [COIN-OR Branch-and-Cut MIP Solver] #90: Bug in factorSparseSmall (CoinFactorization2.cpp)

[COIN-OR Branch-and-Cut MIP Solver]

#90: Bug in factorSparseSmall (CoinFactorization2.cpp)
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  Reporter:  sssiii  |      Owner:  tkr     
      Type:  defect  |     Status:  assigned
  Priority:  minor   |    Version:  2.4.0   
Resolution:          |   Keywords:          
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Comment(by sssiii):

 Having looked deeper into the code, I am no longer sure that it is a
 CoinUtils bug. It might be a Clp bug or even a Cbc bug. The problem is
 just that the size of elementU_ and indexRowU_ is reported as zero. Hence
 the pivot() routine cannot itself check if it is writing to not allocated
 memory. I would very much appreciate comments on the code as to where the
 size of these vectors is determined and stored.

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Ticket URL: <https://projects.coin-or.org/Cbc/ticket/90#comment:8>
COIN-OR Branch-and-Cut MIP Solver <http://projects.coin-or.org/Cbc>
An LP-based branch-and-cut MIP solver.