save location of using directive (not used yet)

lib/symboldatabase.cpp

@@ -101,6 +101,15 @@ SymbolDatabase::SymbolDatabase(const Tokenizer *tokenizer, const Settings *setti
             continue;
         }
 
+        // using namespace
+        else if (Token::Match(tok, "using namespace %type% ;|::"))
+        {
+            // save location
+            scope->usingList.push_back(tok);
+
+            tok = tok->tokAt(3);
+        }
+
         else
         {
             // check for end of space

lib/symboldatabase.h

@@ -400,7 +400,10 @@ public:
     AccessControl access;
     unsigned int numConstructors;
     NeedInitialization needInitialization;
-    Scope *functionOf; // class/struct this function belongs to
+    std::list<const Token *> usingList;
+
+    // function specific fields
+    Scope *functionOf; // scope this function belongs to
 
     bool isClassOrStruct() const
     {