Fix missing write barrier in deserialization. Issue 1783.

src/heap-inl.h

Index: src/heap-inl.h
===================================================================
--- src/heap-inl.h	(revision 9721)
+++ src/heap-inl.h	(working copy)
@@ -276,6 +276,19 @@
 }
 
 
+bool Heap::InMovingPage(Object* object) {

[Vyacheslav Egorov (Chromium), 2011/10/21 11:34:35]

I think we really don't need to invoke any incremental write-barriers when
deserializing a context as all objects are white.

[for safety we can enter nomarkingscope when we start deserialization]

+  if (object->IsSmi()) return false;
+  HeapObject* heap_object = HeapObject::cast(object);
+  if (InNewSpace(heap_object)) return true;
+  Address address = heap_object->address();
+  if (lo_space()->Contains(heap_object)) return false;
+  if (old_pointer_space()->FirstPage()->Contains(address)) return false;
+  if (old_data_space()->FirstPage()->Contains(address)) return false;
+  if (map_space()->FirstPage()->Contains(address)) return false;
+  return true;
+}
+
+
 bool Heap::InNewSpace(Address addr) {
   return new_space_.Contains(addr);
 }