Complete implementation of bounds checking in the vm, by introducing a vm object

runtime/vm/heap_profiler.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/heap_profiler.h"
 
 #include "vm/dart_api_state.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
 #include "vm/stack_frame.h"
@@ skipping 190 matching lines @@
 }
 
 
 const RawClass* HeapProfiler::GetClass(const RawObject* raw_obj) {
   return Isolate::Current()->class_table()->At(raw_obj->GetClassId());
 }
 
 
 const RawClass* HeapProfiler::GetSuperClass(const RawClass* raw_class) {
   ASSERT(raw_class != Class::null());
-  const RawType* super_type = raw_class->ptr()->super_type_;
-  if (super_type == Type::null()) {
+  const RawAbstractType* super_type = raw_class->ptr()->super_type_;
+  if (super_type == AbstractType::null()) {
     return Class::null();
   }
-  return reinterpret_cast<const RawClass*>(super_type->ptr()->type_class_);
+  while (super_type->GetClassId() == kBoundedTypeCid) {
+    super_type =
+        reinterpret_cast<const RawBoundedType*>(super_type)->ptr()->type_;
+  }
+  ASSERT(super_type->GetClassId() == kTypeCid);
+  return reinterpret_cast<const RawClass*>(
+      reinterpret_cast<const RawType*>(super_type)->ptr()->type_class_);
 }
 
 
 void HeapProfiler::WriteRoot(const RawObject* raw_obj) {
   SubRecord sub(kRootUnknown, this);
   sub.WriteObjectId(ObjectId(raw_obj));
 }
 
 
 void HeapProfiler::WriteObject(const RawObject* raw_obj) {
@@ skipping 575 matching lines @@
   RawObject* raw_obj = handle->raw();
   visitor_->VisitPointer(&raw_obj);
 }
 
 
 void HeapProfilerObjectVisitor::VisitObject(RawObject* raw_obj) {
   profiler_->WriteObject(raw_obj);
 }
 
 }  // namespace dart