diff -r 0c588a96837c -r 0cde1379b29f src/API.cpp
--- a/src/API.cpp	Mon Nov 19 02:12:13 2012 -0800
+++ b/src/API.cpp	Thu Dec 20 00:59:38 2012 -0800
@@ -289,11 +289,13 @@
       case Ke::Parameter::Float:
         return type->isFloat();
       case Ke::Parameter::FloatRef:
-        return type->isReference() && type->contained_ref()->isFloat();
+        return type->isReference() && ReferenceType::cast(type)->contained()->isFloat();
       case Ke::Parameter::Int:
         return type->isInt32() || type->isEnum();
       case Ke::Parameter::IntRef:
-       return type->isReference() && (type->contained_ref()->isInt32() || type->contained_ref()->isEnum());
+       return type->isReference() &&
+              (ReferenceType::cast(type)->contained()->isInt32() ||
+               ReferenceType::cast(type)->contained()->isEnum());
       default:
         return false;
     }