Fix build.

src/objects-debug.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 309 matching lines @@
   if (HasFastProperties()) {
     CHECK(map()->unused_property_fields() ==
           (map()->inobject_properties() + properties()->length() -
            map()->NextFreePropertyIndex()));
   }
 }
 
 
 static const char* TypeToString(InstanceType type) {
   switch (type) {
+    case INVALID_TYPE: return "INVALID";
     case MAP_TYPE: return "MAP";
     case HEAP_NUMBER_TYPE: return "HEAP_NUMBER";
     case SHORT_SYMBOL_TYPE:
     case MEDIUM_SYMBOL_TYPE:
     case LONG_SYMBOL_TYPE: return "SYMBOL";
     case SHORT_ASCII_SYMBOL_TYPE:
     case MEDIUM_ASCII_SYMBOL_TYPE:
     case LONG_ASCII_SYMBOL_TYPE: return "ASCII_SYMBOL";
     case SHORT_SLICED_SYMBOL_TYPE:
     case MEDIUM_SLICED_SYMBOL_TYPE:
@@ skipping 704 matching lines @@
     }
     current = hash;
   }
   return true;
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal