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diff --git a/thirdparty/linux/include/coin/CoinWarmStartDual.hpp b/thirdparty/linux/include/coin/CoinWarmStartDual.hpp
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+/* $Id: CoinWarmStartDual.hpp 1372 2011-01-03 23:31:00Z lou $ */
+// Copyright (C) 2000, International Business Machines
+// Corporation and others.  All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+#ifndef CoinWarmStartDual_H
+#define CoinWarmStartDual_H
+
+#include "CoinHelperFunctions.hpp"
+#include "CoinWarmStart.hpp"
+#include "CoinWarmStartVector.hpp"
+
+
+//#############################################################################
+
+/** WarmStart information that is only a dual vector */
+
+class CoinWarmStartDual : public virtual CoinWarmStart {
+public:
+   /// return the size of the dual vector
+   inline int size() const { return dual_.size(); }
+   /// return a pointer to the array of duals
+   inline const double * dual() const { return dual_.values(); }
+
+   /** Assign the dual vector to be the warmstart information. In this method
+       the object assumes ownership of the pointer and upon return "dual" will
+       be a NULL pointer. If copying is desirable use the constructor. */
+   inline void assignDual(int size, double *& dual)
+    { dual_.assignVector(size, dual); }
+
+   CoinWarmStartDual() {}
+
+   CoinWarmStartDual(int size, const double * dual) : dual_(size, dual) {}
+
+   CoinWarmStartDual(const CoinWarmStartDual& rhs) : dual_(rhs.dual_) {}
+
+   CoinWarmStartDual& operator=(const CoinWarmStartDual& rhs) {
+     if (this != &rhs) {
+       dual_ = rhs.dual_;
+     }
+     return *this;
+   }
+
+   /** `Virtual constructor' */
+   virtual CoinWarmStart *clone() const {
+      return new CoinWarmStartDual(*this);
+   }
+
+   virtual ~CoinWarmStartDual() {}
+
+/*! \name Dual warm start `diff' methods */
+//@{
+
+  /*! \brief Generate a `diff' that can convert the warm start passed as a
+	     parameter to the warm start specified by \c this.
+
+    The capabilities are limited: the basis passed as a parameter can be no
+    larger than the basis pointed to by \c this.
+  */
+
+  virtual CoinWarmStartDiff*
+  generateDiff (const CoinWarmStart *const oldCWS) const ;
+
+  /*! \brief Apply \p diff to this warm start.
+
+    Update this warm start by applying \p diff. It's assumed that the
+    allocated capacity of the warm start is sufficiently large.
+  */
+
+  virtual void applyDiff (const CoinWarmStartDiff *const cwsdDiff) ;
+
+#if 0
+protected:
+  inline const CoinWarmStartVector<double>& warmStartVector() const { return dual_; }
+#endif
+
+//@}
+
+private:
+   ///@name Private data members
+  CoinWarmStartVector<double> dual_;
+};
+
+//#############################################################################
+
+/*! \class CoinWarmStartDualDiff
+    \brief A `diff' between two CoinWarmStartDual objects
+
+  This class exists in order to hide from the world the details of
+  calculating and representing a `diff' between two CoinWarmStartDual
+  objects. For convenience, assignment, cloning, and deletion are visible to
+  the world, and default and copy constructors are made available to derived
+  classes.  Knowledge of the rest of this structure, and of generating and
+  applying diffs, is restricted to the friend functions
+  CoinWarmStartDual::generateDiff() and CoinWarmStartDual::applyDiff().
+
+  The actual data structure is a pair of vectors, #diffNdxs_ and #diffVals_.
+    
+*/
+
+class CoinWarmStartDualDiff : public virtual CoinWarmStartDiff
+{ public:
+
+  /*! \brief `Virtual constructor' */
+  virtual CoinWarmStartDiff *clone() const
+  {
+      return new CoinWarmStartDualDiff(*this) ;
+  }
+
+  /*! \brief Assignment */
+  virtual CoinWarmStartDualDiff &operator= (const CoinWarmStartDualDiff &rhs)
+  {
+      if (this != &rhs) {
+	  diff_ = rhs.diff_;
+      }
+      return *this;
+  }
+
+  /*! \brief Destructor */
+  virtual ~CoinWarmStartDualDiff() {}
+
+  protected:
+
+  /*! \brief Default constructor
+  
+    This is protected (rather than private) so that derived classes can
+    see it when they make <i>their</i> default constructor protected or
+    private.
+  */
+  CoinWarmStartDualDiff () : diff_() {}
+
+  /*! \brief Copy constructor
+  
+    For convenience when copying objects containing CoinWarmStartDualDiff
+    objects. But consider whether you should be using #clone() to retain
+    polymorphism.
+
+    This is protected (rather than private) so that derived classes can
+    see it when the make <i>their</i> copy constructor protected or
+    private.
+  */
+  CoinWarmStartDualDiff (const CoinWarmStartDualDiff &rhs) :
+      diff_(rhs.diff_) {}
+
+  private:
+
+  friend CoinWarmStartDiff*
+    CoinWarmStartDual::generateDiff(const CoinWarmStart *const oldCWS) const ;
+  friend void
+    CoinWarmStartDual::applyDiff(const CoinWarmStartDiff *const diff) ;
+
+  /*! \brief Standard constructor */
+  CoinWarmStartDualDiff (int sze, const unsigned int *const diffNdxs,
+			 const double *const diffVals) :
+      diff_(sze, diffNdxs, diffVals) {}
+
+  /*!
+      \brief The difference in the dual vector is simply the difference in a
+      vector.
+  */
+  CoinWarmStartVectorDiff<double> diff_;
+};
+
+
+#endif
+