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<p>Sebastian,<br>
<br>
If columnActivity_ is NULL then numberColumns_ should have been zero. I should probably look into it further.<br>
<br>
However your fix will do no harm - thanks.<br>
<br>
John Forrest<br>
<br>
<img width="16" height="16" src="cid:1__=0ABBFCC8DFBC69858f9e8a93df938@us.ibm.com" border="0" alt="Inactive hide details for "Sebastian Theophil" ---10/23/2009 08:55:37 AM---Hi, I have encountered what I believe to be a bug in"><font color="#424282">"Sebastian Theophil" ---10/23/2009 08:55:37 AM---Hi, I have encountered what I believe to be a bug in ClpModel::gutsOfCopy.</font><br>
<br>
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<font size="2" color="#5F5F5F">From:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=0ABBFCC8DFBC69858f9e8a93df938@us.ibm.com" border="0" alt=""><br>
<font size="2">"Sebastian Theophil" <stheophil@think-cell.com></font></td></tr>
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<font size="2" color="#5F5F5F">To:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=0ABBFCC8DFBC69858f9e8a93df938@us.ibm.com" border="0" alt=""><br>
<font size="2"><clp@list.coin-or.org></font></td></tr>
<tr valign="top"><td width="1%"><img width="96" height="1" src="cid:2__=0ABBFCC8DFBC69858f9e8a93df938@us.ibm.com" border="0" alt=""><br>
<font size="2" color="#5F5F5F">Date:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=0ABBFCC8DFBC69858f9e8a93df938@us.ibm.com" border="0" alt=""><br>
<font size="2">10/23/2009 08:55 AM</font></td></tr>
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<font size="2" color="#5F5F5F">Subject:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=0ABBFCC8DFBC69858f9e8a93df938@us.ibm.com" border="0" alt=""><br>
<font size="2">[Clp] Proposed Patch for ClpModel::gutsOfCopy</font></td></tr>
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<font size="2" color="#5F5F5F">Sent by:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=0ABBFCC8DFBC69858f9e8a93df938@us.ibm.com" border="0" alt=""><br>
<font size="2">clp-bounces@list.coin-or.org</font></td></tr>
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<br>
<tt>Hi,<br>
<br>
<br>
I have encountered what I believe to be a bug in ClpModel::gutsOfCopy.<br>
In the latest trunk, lines 779-797 are<br>
<br>
if (rhs.rowActivity_) {<br>
rowActivity_=new double[numberRows_];<br>
columnActivity_=new double[numberColumns_];<br>
dual_=new double[numberRows_];<br>
reducedCost_=new double[numberColumns_];<br>
ClpDisjointCopyN ( rhs.rowActivity_, numberRows_ ,<br>
rowActivity_);<br>
ClpDisjointCopyN ( rhs.columnActivity_, numberColumns_ ,<br>
columnActivity_);<br>
ClpDisjointCopyN ( rhs.dual_, numberRows_ , <br>
dual_);<br>
ClpDisjointCopyN ( rhs.reducedCost_, numberColumns_ ,<br>
reducedCost_);<br>
} else {<br>
rowActivity_=NULL;<br>
columnActivity_=NULL;<br>
dual_=NULL;<br>
reducedCost_=NULL;<br>
}<br>
<br>
After creating a OsiClpSolverInterface and adding a few constraints I<br>
have created an object in which rowActivity_ and dual_ are set, but<br>
columnActivity_ and reducedCost_ are not and the above code crashes. The<br>
model is not solved yet, maybe that's why the problem occurs.<br>
<br>
If I change the above lines to <br>
<br>
rowActivity_= ClpCopyOfArray(rhs.rowActivity_, numberRows_);<br>
columnActivity_= ClpCopyOfArray(rhs.columnActivity_,<br>
numberColumns_);<br>
dual_= ClpCopyOfArray(rhs.dual_, numberRows_);<br>
reducedCost_= ClpCopyOfArray(rhs.reducedCost_, numberColumns_);<br>
<br>
Everything works fine.<br>
<br>
Regards<br>
Sebastian<br>
<br>
--<br>
Sebastian Theophil . stheophil@think-cell.com<br>
Software Engineer<br>
<br>
think-cell Software GmbH . Invalidenstr. 34 . 10115 Berlin, Germany <br>
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