fix: Add required C++11 explicit copy constructor

src/libfwbuilder/src/fwbuilder/FWObject.h

@@ -583,7 +583,8 @@ class FWObjectTypedChildIterator
     FWObjectTypedChildIterator();
     FWObjectTypedChildIterator(const FWObjectTypedChildIterator &o);   
     FWObjectTypedChildIterator(const FWObject *o, const std::string &_type_name);
-    
+    FWObjectTypedChildIterator& operator=(const FWObjectTypedChildIterator&) = default;
+
     bool operator==(const FWObject::const_iterator& __x) const;
     bool operator!=(const FWObject::const_iterator& __x) const;
     FWObject *operator*() const;

src/libfwbuilder/src/fwbuilder/FWObjectDatabase.h

@@ -289,6 +289,8 @@ public:
          */
         FWObjectDatabase(FWObjectDatabase& d);
 
+        FWObjectDatabase& operator=(const FWObjectDatabase&) = default;
+
         virtual ~FWObjectDatabase();
 
         // --- methods dealing with object index

src/libfwbuilder/src/fwbuilder/InterfaceData.h

@@ -64,6 +64,7 @@ public:
         InterfaceData();
         InterfaceData(const InterfaceData& other);
         InterfaceData(const libfwbuilder::Interface &iface);
+        InterfaceData& operator=(const InterfaceData&) = default;
         virtual ~InterfaceData();
 
     };

src/libgui/ObjectManipulator.cpp

@@ -1838,4 +1838,3 @@ list<Firewall*> ObjectManipulator::findFirewallsForObject(FWObject *o)
 {
     return UsageResolver().findFirewallsForObject(o, this->m_project->db());
 }
-

src/libgui/RuleSetModel.h

@@ -61,6 +61,7 @@ public:
     bool hasNext();
     bool hasPrev();
 
+    constexpr RuleSetModelIterator(const RuleSetModelIterator&) = default;
     RuleSetModelIterator& operator= (const RuleSetModelIterator&);
     RuleSetModelIterator& operator++ ();
     RuleSetModelIterator& operator-- ();