diff --git a/src/graphviz_digraph_parser.cpp b/src/graphviz_digraph_parser.cpp
index 88a443ea..2690614a 100644
--- a/src/graphviz_digraph_parser.cpp
+++ b/src/graphviz_digraph_parser.cpp
@@ -95,12 +95,13 @@ using std::malloc;
     typedef std::map<std::string, Subgraph*>::iterator It; 
     typedef std::map<std::string, Vertex>::iterator Iter; 
 
+#if 0 // RG - defined but unused warning
     static const std::string& get_graph_name(const Subgraph& g) {
       const boost::graph_property<Subgraph, boost::graph_name_t>::type&
         name = boost::get_property(g, boost::graph_name);
       return name; 
     }
-
+#endif
     static std::pair<Iter, bool> lookup(const std::string& name) {
       //lookup in the top level
       Iter it = nodes.find(name);
@@ -1412,12 +1413,10 @@ namespace boost {
   void read_graphviz(const std::string& filename, GRAPHVIZ_GRAPH& g) {
     FILE* file = fopen(filename.c_str(), "r");
     yyrestart(file);
-    void* in = static_cast<void*>(file);
     yyparse(static_cast<void*>(&g));
   }
 
   void read_graphviz(FILE* file, GRAPHVIZ_GRAPH& g) {
-    void* in = static_cast<void*>(file);
     yyrestart(file);
     yyparse(static_cast<void*>(&g));
   }
diff --git a/src/graphviz_graph_parser.cpp b/src/graphviz_graph_parser.cpp
index 92dd8807..0f69e302 100644
--- a/src/graphviz_graph_parser.cpp
+++ b/src/graphviz_graph_parser.cpp
@@ -95,12 +95,13 @@ using std::malloc;
     typedef std::map<std::string, Subgraph*>::iterator It; 
     typedef std::map<std::string, Vertex>::iterator Iter; 
 
+#if 0 // RG - defined but unused warning
     static const std::string& get_graph_name(const Subgraph& g) {
       const boost::graph_property<Subgraph, boost::graph_name_t>::type&
         name = boost::get_property(g, boost::graph_name);
       return name; 
     }
-
+#endif
     static std::pair<Iter, bool> lookup(const std::string& name) {
       //lookup in the top level
       Iter it = nodes.find(name);