diff -r a000bafece09 -r 393f1b8ac8c3 src/TypeManager.cpp
--- a/src/TypeManager.cpp	Mon Jul 30 12:13:22 2012 -0700
+++ b/src/TypeManager.cpp	Mon Jul 30 22:24:57 2012 -0700
@@ -47,6 +47,10 @@
     if (!stringTag)
         return false;
 
+    Local<String> boolTag(zone_, zone_->makeSymbol("bool"));
+    if (!boolTag)
+        return false;
+
     Local<String> nullTag(zone_);
 
     if ((primitiveTypes_[PrimitiveType_Int32] = Type::NewPrimitive(zone_, nullTag)) == NULL)
@@ -57,6 +61,8 @@
         return false;
     if ((primitiveTypes_[PrimitiveType_Char] = Type::NewPrimitive(zone_, stringTag)) == NULL)
         return false;
+    if ((primitiveTypes_[PrimitiveType_Bool] = Type::NewPrimitive(zone_, boolTag)) == NULL)
+        return false;
 
     Local<Type> type(zone_);
     for (unsigned i = 0; i < PrimitiveTypes_Total; i++) {