- Turn on canonicalization verification after a reload in debug mode.

runtime/vm/object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/become.h"
@@ skipping 4393 matching lines @@
   static RawObject* NewKey(const CanonicalInstanceKey& obj) {
     return obj.key_.raw();
   }
 };
 typedef UnorderedHashSet <CanonicalInstanceTraits> CanonicalInstancesSet;
 
 
 RawInstance* Class::LookupCanonicalInstance(Zone* zone,
                                             const Instance& value) const {
   ASSERT(this->raw() == value.clazz());
+  ASSERT(is_finalized());
   Instance& canonical_value = Instance::Handle(zone);
   if (this->constants() != Object::empty_array().raw()) {
     CanonicalInstancesSet constants(zone, this->constants());
     canonical_value ^= constants.GetOrNull(CanonicalInstanceKey(value));
     this->set_constants(constants.Release());
   }
   return canonical_value.raw();
 }
 
 
@@ skipping 18611 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart