- Add extra checking when validating objects.

vm/heap.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.h"
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/compiler_stats.h"
 #include "vm/flags.h"
@@ skipping 216 matching lines @@
 
 
 void Heap::Init(Isolate* isolate) {
   ASSERT(isolate->heap() == NULL);
   Heap* heap = new Heap();
   isolate->set_heap(heap);
 }
 
 
 bool Heap::Verify() const {
-  VerifyPointersVisitor visitor;
+  VerifyPointersVisitor visitor(Isolate::Current());
   new_space_->VisitObjectPointers(&visitor);
   old_space_->VisitObjectPointers(&visitor);
   code_space_->VisitObjectPointers(&visitor);
   stub_code_space_->VisitObjectPointers(&visitor);
   // Only returning a value so that Heap::Validate can be called from an ASSERT.
   return true;
 }
 
 
 #if defined(DEBUG)
 NoGCScope::NoGCScope() : StackResource(Isolate::Current()) {
   isolate()->IncrementNoGCScopeDepth();
 }
 
 
 NoGCScope::~NoGCScope() {
   isolate()->DecrementNoGCScopeDepth();
 }
 #endif  // defined(DEBUG)
 
 }  // namespace dart