diff -r 7c5be05296e3 -r 5cbec15fadfe src/Array.cpp
--- a/src/Array.cpp	Sat Nov 17 22:02:08 2012 -0800
+++ b/src/Array.cpp	Sat Nov 17 23:11:38 2012 -0800
@@ -27,7 +27,7 @@
 using namespace ke;
 
 ArrayMap *
-ArrayMap::New(Zone *zone, Handle<Type> type)
+ArrayMap::New(Zone *zone, Handle<ArrayType> type)
 {
     Local<Map> obj(zone, zone->allocateMap(MapKind_Array, sizeof(ArrayMap), MapKind_MetaArray));
     if (!obj)
@@ -39,7 +39,7 @@
 }
 
 ArrayMap *
-ArrayMap::Attach(Zone *zone, Handle<Type> type)
+ArrayMap::Attach(Zone *zone, Handle<ArrayType> type)
 {
     if (type->newMap())
         return ArrayMap::cast(type->newMap());
@@ -50,7 +50,7 @@
 
     // Ensure the inner type has an ArrayMap if needed.
     if (type->contained()->isArray()) {
-        Local<Type> contained(zone, type->contained());
+        Local<ArrayType> contained(zone, ArrayType::cast(type->contained()));
         if (!ArrayMap::Attach(zone, contained))
             return NULL;
     }
@@ -114,7 +114,8 @@
 
     // If this is an array of structs, we're required to allocate those structs now.
     if (map->type()->contained()->isStruct()) {
-        Local<StructMap> childMap(zone, StructMap::cast(map->type()->contained()->newMap()));
+        Local<StructType> childType(zone, StructType::cast(map->type()->contained()));
+        Local<StructMap> childMap(zone, childType->newMap());
         Local<Struct> child(zone);
         for (unsigned i = 0; i < nelements; i++) {
             child = Struct::New(zone, childMap, tenure);
@@ -137,7 +138,8 @@
         return NULL;
 
     if (map->type()->contained()->isArray()) {
-        Local<ArrayMap> childMap(zone, ArrayMap::cast(map->type()->contained()->newMap()));
+        Local<ArrayType> childType(zone, ArrayType::cast(map->type()->contained()));
+        Local<ArrayMap> childMap(zone, childType->newMap());
         Local<Array> child(zone);
 
         for (unsigned i = 0; i < unsigned(dims[level]); i++) {
@@ -174,7 +176,8 @@
         return NULL;
 
     if (map->type()->contained()->isArray()) {
-        Local<ArrayMap> childMap(zone, ArrayMap::cast(map->type()->contained()->newMap()));
+        Local<ArrayType> childType(zone, ArrayType::cast(map->type()->contained()));
+        Local<ArrayMap> childMap(zone, childType->newMap());
         Local<Array> child(zone);
 
         if (childMap->type()->isFixedLength()) {