diff -r 0c3bcd50e361 -r a350c2cc736a jitcraft/Zone.cpp
--- a/jitcraft/Zone.cpp	Thu Jun 28 01:38:56 2012 -0700
+++ b/jitcraft/Zone.cpp	Fri Jun 29 19:35:17 2012 -0700
@@ -16,11 +16,18 @@
  * JITCraft. If not, see http://www.gnu.org/licenses/.
  */
 #include "Zone.h"
+#include "TypeManager.h"
 
 using namespace jc;
 
 Zone jc::SingleThreadedZone;
 
+Zone::Zone()
+  : heap_(this),
+    types_(NULL)
+{
+}
+
 bool
 Zone::initialize()
 {
@@ -28,5 +35,16 @@
         return false;
     if (!unsafeStack_.initialize())
         return false;
+    if (!heap_.initialize())
+        return false;
+
+    maps_[MapKind_Meta] = heap_.metaMap();
+    if ((maps_[MapKind_Type] = heap_.allocateMap(MapKind_Type, sizeof(Map))) == NULL)
+        return false;
+
+    types_ = new TypeManager(this);
+    if (!types_ || !types_->initialize())
+        return false;
+
     return true;
 }