1 files changed, 7 insertions, 0 deletions
diff --git a/ndb/include/util/SimpleProperties.hpp b/ndb/include/util/SimpleProperties.hpp
index 438426fb62b..b29e65e21da 100644
--- a/ndb/include/util/SimpleProperties.hpp
+++ b/ndb/include/util/SimpleProperties.hpp
@@ -151,6 +151,7 @@ public:
     ValueType m_type;
   protected:
     Reader();
+    virtual ~Reader() {}
     virtual void reset() = 0;
     
     virtual bool step(Uint32 len) = 0;
@@ -169,6 +170,7 @@ public:
     bool add(Uint16 key, const char * value);
     bool add(Uint16 key, const void* value, int len);
   protected:
+    virtual ~Writer() {}
     virtual bool reset() = 0;
     virtual bool putWord(Uint32 val) = 0;
     virtual bool putWords(const Uint32 * src, Uint32 len) = 0;
@@ -184,6 +186,7 @@ class SimplePropertiesLinearReader : public SimpleProperties::Reader {
 public:
   SimplePropertiesLinearReader(const Uint32 * src, Uint32 len);
   
+  virtual ~SimplePropertiesLinearReader() {}
   virtual void reset();
   virtual bool step(Uint32 len);
   virtual bool getWord(Uint32 * dst);
@@ -202,6 +205,7 @@ class LinearWriter : public SimpleProperties::Writer {
 public:
   LinearWriter(Uint32 * src, Uint32 len);
   
+  virtual ~LinearWriter() {}
   virtual bool reset();
   virtual bool putWord(Uint32 val);
   virtual bool putWords(const Uint32 * src, Uint32 len);
@@ -219,6 +223,7 @@ class UtilBufferWriter : public SimpleProperties::Writer {
 public:
   UtilBufferWriter(class UtilBuffer & buf);
   
+  virtual ~UtilBufferWriter() {}
   virtual bool reset();
   virtual bool putWord(Uint32 val);
   virtual bool putWords(const Uint32 * src, Uint32 len);
@@ -238,6 +243,7 @@ public:
   SimplePropertiesSectionReader(struct SegmentedSectionPtr &,
 				class SectionSegmentPool &);
   
+  virtual ~SimplePropertiesSectionReader() {}
   virtual void reset();
   virtual bool step(Uint32 len);
   virtual bool getWord(Uint32 * dst);
@@ -270,6 +276,7 @@ class SimplePropertiesSectionWriter : public SimpleProperties::Writer {
 public:
   SimplePropertiesSectionWriter(class SectionSegmentPool &);
 
+  virtual ~SimplePropertiesSectionWriter() {}
   virtual bool reset();
   virtual bool putWord(Uint32 val);
   virtual bool putWords(const Uint32 * src, Uint32 len);