- Add extra checking when validating objects.

vm/raw_object.h

 // 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.
 
 #ifndef VM_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 #include "vm/token.h"
@@ skipping 243 matching lines @@
     intptr_t result = SizeTag::decode(tags);
     if ((result != 0) && !FreeBit::decode(tags)) {
       ASSERT(result == SizeFromClass());
       return result;
     }
     result = SizeFromClass();
     ASSERT((result > SizeTag::kMaxSizeTag) || FreeBit::decode(tags));
     return result;
   }
 
-  void Validate() const;
+  void Validate(Isolate* isolate) const;
   intptr_t VisitPointers(ObjectPointerVisitor* visitor);
   bool FindObject(FindObjectVisitor* visitor);
 
   static RawObject* FromAddr(uword addr) {
     // We expect the untagged address here.
     ASSERT((addr & kSmiTagMask) != kHeapObjectTag);
     return reinterpret_cast<RawObject*>(addr + kHeapObjectTag);
   }
 
   static uword ToAddr(RawObject* raw_obj) {
@@ skipping 924 matching lines @@
   intptr_t type_;  // Uninitialized, simple or complex.
   intptr_t flags_;  // Represents global/local, case insensitive, multiline.
 
   // Variable length data follows here.
   uint8_t data_[0];
 };
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_