CHECK that FunctionTemplates are not modified after first instantiation

src/objects-printer.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/heap/objects-visiting.h"
 #include "src/jsregexp.h"
@@ skipping 909 matching lines @@
   os << "\n - prototype_template: " << Brief(prototype_template());
   os << "\n - parent_template: " << Brief(parent_template());
   os << "\n - named_property_handler: " << Brief(named_property_handler());
   os << "\n - indexed_property_handler: " << Brief(indexed_property_handler());
   os << "\n - instance_template: " << Brief(instance_template());
   os << "\n - signature: " << Brief(signature());
   os << "\n - access_check_info: " << Brief(access_check_info());
   os << "\n - hidden_prototype: " << (hidden_prototype() ? "true" : "false");
   os << "\n - undetectable: " << (undetectable() ? "true" : "false");
   os << "\n - need_access_check: " << (needs_access_check() ? "true" : "false");
+  os << "\n - instantiated: " << (instantiated() ? "true" : "false");
   os << "\n";
 }
 
 
 void ObjectTemplateInfo::ObjectTemplateInfoPrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "ObjectTemplateInfo");
   os << " - tag: " << Brief(tag());
   os << "\n - property_list: " << Brief(property_list());
   os << "\n - property_accessors: " << Brief(property_accessors());
   os << "\n - constructor: " << Brief(constructor());
@@ skipping 243 matching lines @@
   }
 }
 
 
 void JSObject::PrintTransitions(std::ostream& os) {  // NOLINT
   if (!map()->HasTransitionArray()) return;
   map()->transitions()->PrintTransitions(os, false);
 }
 #endif  // defined(DEBUG) || defined(OBJECT_PRINT)
 } }  // namespace v8::internal