5 files changed, 6 insertions, 0 deletions
diff --git a/ndb/include/util/InputStream.hpp b/ndb/include/util/InputStream.hpp
index 56c43686df1..29866aa3418 100644
--- a/ndb/include/util/InputStream.hpp
+++ b/ndb/include/util/InputStream.hpp
@@ -27,6 +27,7 @@ class InputStream {
 public:
   virtual ~InputStream() {}
   virtual char* gets(char * buf, int bufLen) = 0;
+  InputStream() {}
 };
 
 class FileInputStream : public InputStream {
diff --git a/ndb/include/util/OutputStream.hpp b/ndb/include/util/OutputStream.hpp
index a834b577bb3..ccf88a72359 100644
--- a/ndb/include/util/OutputStream.hpp
+++ b/ndb/include/util/OutputStream.hpp
@@ -25,6 +25,7 @@
  */
 class OutputStream {
 public:
+  OutputStream() {}
   virtual ~OutputStream() {}
   virtual int print(const char * fmt, ...) = 0;
   virtual int println(const char * fmt, ...) = 0;
@@ -61,6 +62,7 @@ public:
 
 class NullOutputStream : public OutputStream {
 public:
+  NullOutputStream() {}
   int print(const char * /* unused */, ...) { return 1;}
   int println(const char * /* unused */, ...) { return 1;}
 };
diff --git a/ndb/include/util/SimpleProperties.hpp b/ndb/include/util/SimpleProperties.hpp
index b29e65e21da..c19780c2757 100644
--- a/ndb/include/util/SimpleProperties.hpp
+++ b/ndb/include/util/SimpleProperties.hpp
@@ -169,6 +169,7 @@ public:
     bool add(Uint16 key, Uint32 value);
     bool add(Uint16 key, const char * value);
     bool add(Uint16 key, const void* value, int len);
+    Writer() {}
   protected:
     virtual ~Writer() {}
     virtual bool reset() = 0;
diff --git a/ndb/include/util/SocketAuthenticator.hpp b/ndb/include/util/SocketAuthenticator.hpp
index 1b82567feaa..0c3de073b1e 100644
--- a/ndb/include/util/SocketAuthenticator.hpp
+++ b/ndb/include/util/SocketAuthenticator.hpp
@@ -20,6 +20,7 @@
 class SocketAuthenticator
 {
 public:
+  SocketAuthenticator() {}
   virtual ~SocketAuthenticator() {};
   virtual bool client_authenticate(int sockfd) = 0;
   virtual bool server_authenticate(int sockfd) = 0;
diff --git a/ndb/include/util/SocketServer.hpp b/ndb/include/util/SocketServer.hpp
index ea709bfecae..c4f7e8c0ade 100644
--- a/ndb/include/util/SocketServer.hpp
+++ b/ndb/include/util/SocketServer.hpp
@@ -60,6 +60,7 @@ public:
    */
   class Service {
   public:
+    Service() {}
     virtual ~Service(){}
     
     /**