Index: src/SymTab/ImplementationType.cc
===================================================================
--- src/SymTab/ImplementationType.cc	(revision 7e003011cac72e307c02d183bca9cbd4a982d69b)
+++ src/SymTab/ImplementationType.cc	(revision af397ef8f0a43077863974fc725f7ae0d12ca892)
@@ -76,14 +76,5 @@
 	}
 
-	void ImplementationType::visit(FunctionType *functionType) {
-///   FunctionType *newType = functionType->clone();
-///   for ( std::list< DeclarationWithType* >::iterator i = newType->get_parameters().begin(); i != newType->get_parameters().end(); ++i ) {
-///     i->set_type( implementationType( i->get_type(), indexer ) );
-///   }
-///   for ( std::list< DeclarationWithType* >::iterator i = newType->get_parameters().begin(); i != newType->get_parameters().end(); ++i ) {
-///     i->set_type( implementationType( i->get_type(), indexer ) );
-///   }
-	}
-
+	void ImplementationType::visit( __attribute__((unused)) FunctionType *functionType ) {}
 	void ImplementationType::visit( __attribute__((unused)) StructInstType * aggregateUseType ) {}
 	void ImplementationType::visit( __attribute__((unused)) UnionInstType * aggregateUseType ) {}
Index: src/SymTab/Mangler.cc
===================================================================
--- src/SymTab/Mangler.cc	(revision 7e003011cac72e307c02d183bca9cbd4a982d69b)
+++ src/SymTab/Mangler.cc	(revision af397ef8f0a43077863974fc725f7ae0d12ca892)
@@ -236,9 +236,9 @@
 	}
 
-	void Mangler::visit( ZeroType *zeroType ) {
+	void Mangler::visit( __attribute__((unused)) ZeroType *zeroType ) {
 		mangleName << "Z";
 	}
 
-	void Mangler::visit( OneType *oneType ) {
+	void Mangler::visit( __attribute__((unused)) OneType *oneType ) {
 		mangleName << "O";
 	}
Index: src/SymTab/Validate.cc
===================================================================
--- src/SymTab/Validate.cc	(revision 7e003011cac72e307c02d183bca9cbd4a982d69b)
+++ src/SymTab/Validate.cc	(revision af397ef8f0a43077863974fc725f7ae0d12ca892)
@@ -610,5 +610,5 @@
 		returnVals = functionDecl->get_functionType()->get_returnVals();
 	}
-	void ReturnChecker::postvisit( FunctionDecl * functionDecl ) {
+	void ReturnChecker::postvisit( __attribute__((unused)) FunctionDecl * functionDecl ) {
 		returnVals = returnValsStack.top();
 		returnValsStack.pop();