all virtual functions in baseNMIU are now pure

src/ca/netReadNotifyIO.cpp

@@ -31,9 +31,6 @@ void netReadNotifyIO::show ( unsigned level ) const
 {
     ::printf ( "read notify IO at %p\n", 
         static_cast < const void * > ( this ) );
-    if ( level > 0u ) {
-        this->baseNMIU::show ( level - 1u );
-    }
 }
 
 void netReadNotifyIO::destroy ( cacRecycle & recycle )
@@ -64,3 +61,9 @@ void netReadNotifyIO::completion ( unsigned type,
     this->notify.completion ( type, count, pData );
 }
 
+class netSubscription * netReadNotifyIO::isSubscription ()
+{
+    return 0;
+}
+
+