Fix implicit copy constructor/assignment deprecation warning

GaudiCoreSvc/src/IncidentSvc/DataOnDemandSvc.h

@@ -141,10 +141,11 @@ public:
     IAlgorithm*   algorithm = nullptr;
     std::string   name;
     std::string   type;
-    unsigned long num       = 0;
-    bool          executing = false;
-    Leaf()                  = default;
-    Leaf( const Leaf& l )   = default;
+    unsigned long num                = 0;
+    bool          executing          = false;
+    Leaf()                           = default;
+    Leaf( const Leaf& l )            = default;
+    Leaf& operator=( const Leaf& l ) = default;
     Leaf( std::string t, std::string n ) : name( std::move( n ) ), type( std::move( t ) ) {}
   };
   // ==========================================================================

GaudiKernel/include/GaudiKernel/StreamBuffer.h

@@ -127,16 +127,18 @@ public:
     long             third  = INVALID;
     ContainedLink()         = default;
     ContainedLink( ContainedObject* pObj, long hint, long link ) : first( pObj ), second( hint ), third( link ) {}
+    ContainedLink( const ContainedLink& copy )            = default;
     ContainedLink& operator=( const ContainedLink& copy ) = default;
   };
   /// Definition of the contained link set
   class IdentifiedLink {
   public:
-    DataObject* first                            = nullptr;
-    long        second                           = INVALID;
-    IdentifiedLink()                             = default;
-    IdentifiedLink( const IdentifiedLink& copy ) = default;
+    DataObject* first  = nullptr;
+    long        second = INVALID;
+    IdentifiedLink()   = default;
     IdentifiedLink( DataObject* pObj, long hint ) : first( pObj ), second( hint ) {}
+    IdentifiedLink( const IdentifiedLink& copy )            = default;
+    IdentifiedLink& operator=( const IdentifiedLink& copy ) = default;
   };
 
   typedef std::vector<ContainedLink> ContainedLinks;

GaudiSvc/src/THistSvc/THistSvc.h

@@ -251,8 +251,9 @@ private:
     bool        temp{ true };
     bool        shared{ false };
 
-    THistID()                     = default;
-    THistID( const THistID& rhs ) = default;
+    THistID()                                = default;
+    THistID( const THistID& rhs )            = default;
+    THistID& operator=( const THistID& rhs ) = default;
     THistID( std::string& i, bool& t, TObject* o, TFile* f ) : id( i ), obj( o ), file( f ), temp( t ) {}
     THistID( std::string& i, bool& t, TObject* o, TFile* f, Mode m )
         : id( i ), obj( o ), file( f ), mode( m ), temp( t ) {}