0025571: Avoid base Classes without virtual Destructors

Destructors of collection classes from NCollection and math_Function are made virtual to allow safe destruction by pointer to base class.

Destructors of classes HatchGen_IntersectionPoint, IntCurveSurface_Intersection, Intf_Interference, IntRes2d_Intersection are made protected to avoid possibility of destructing by pointer to corresponding base class.

src/NCollection/NCollection_BaseList.hxx

@@ -119,6 +119,11 @@ public:
   const Handle(NCollection_BaseAllocator)& Allocator() const 
   { return myAllocator; }
 
+  // ******** Destructor
+  // Purpose: defines virtual interface
+  virtual ~NCollection_BaseList (void)
+  {}
+
  protected:
   // --------- PROTECTED METHODS ----------
 

src/NCollection/NCollection_BaseMap.hxx

@@ -166,6 +166,9 @@ public:
     myAllocator = (theAllocator.IsNull() ? NCollection_BaseAllocator::CommonBaseAllocator() : theAllocator);
   }
 
+  //! Destructor
+  virtual ~NCollection_BaseMap() {}
+
   //! BeginResize
   Standard_EXPORT Standard_Boolean BeginResize 
     (const Standard_Integer  NbBuckets,

src/NCollection/NCollection_BaseSequence.hxx

@@ -115,6 +115,9 @@ public:
     myAllocator = (theAllocator.IsNull() ? NCollection_BaseAllocator::CommonBaseAllocator() : theAllocator);
   }
 
+  //! Destructor
+  virtual ~NCollection_BaseSequence() {}
+
   Standard_EXPORT void   ClearSeq    (NCollection_DelSeqNode fDel);
   Standard_EXPORT void   PAppend     (NCollection_SeqNode *);
   Standard_EXPORT void   PAppend     (NCollection_BaseSequence& S);

src/NCollection/NCollection_BaseVector.hxx

@@ -184,6 +184,9 @@ protected: //! @name protected methods
     myData = allocMemBlocks (myCapacity);
   }
 
+  //! Destructor
+  virtual ~NCollection_BaseVector() {}
+
   //! @return pointer to memory where to put the new item
   Standard_EXPORT void* expandV (const Standard_Integer theIndex);
 

src/NCollection/NCollection_DataMap.hxx

@@ -359,7 +359,7 @@ class NCollection_DataMap : public NCollection_BaseMap
   }
 
   //! Destructor
-  ~NCollection_DataMap (void)
+  virtual ~NCollection_DataMap (void)
   { Clear(); }
 
   //! Size

src/NCollection/NCollection_IndexedDataMap.hxx

@@ -593,7 +593,7 @@ class NCollection_IndexedDataMap : public NCollection_BaseMap
   }
 
   //! Destructor
-  ~NCollection_IndexedDataMap (void)
+  virtual ~NCollection_IndexedDataMap (void)
   { Clear(); }
 
   //! Size

src/NCollection/NCollection_IndexedMap.hxx

@@ -454,7 +454,7 @@ class NCollection_IndexedMap : public NCollection_BaseMap
   }
 
   //! Destructor
-  ~NCollection_IndexedMap (void)
+  virtual ~NCollection_IndexedMap (void)
   { Clear(); }
 
   //! Size

src/NCollection/NCollection_List.hxx

@@ -271,7 +271,7 @@ public:
   { PReverse(); }
 
   //! Destructor - clears the List
-  ~NCollection_List (void)
+  virtual ~NCollection_List (void)
   { Clear(); }
 
  private:

src/NCollection/NCollection_Map.hxx

@@ -290,7 +290,7 @@ class NCollection_Map : public NCollection_BaseMap
   }
 
   //! Destructor
-  ~NCollection_Map (void)
+  virtual ~NCollection_Map (void)
   { Clear(); }
 
   //! Size

src/NCollection/NCollection_Sequence.hxx

@@ -325,7 +325,7 @@ public:
   { ChangeValue (theIndex) = theItem; }
 
   // ******** Destructor - clears the Sequence
-  ~NCollection_Sequence (void)
+  virtual ~NCollection_Sequence (void)
   { Clear(); }
 
  private:

src/NCollection/NCollection_Vector.hxx

@@ -165,7 +165,7 @@ public: //! @name public methods
   }
 
   //! Destructor
-  ~NCollection_Vector()
+  virtual ~NCollection_Vector()
   {
     for (Standard_Integer anItemIter = 0; anItemIter < myCapacity; ++anItemIter)
     {