Return false from PagedSpace::Contains is the page from an address is not val...

src/spaces.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2176 matching lines @@
 
   // Finds an object for a given address, returns Failure::Exception()
   // if it is not found. The function iterates through all objects in this
   // space, may be slow.
   Object* FindObject(Address a);
 
   // Finds a large object page containing the given pc, returns NULL
   // if such a page doesn't exist.
   LargeObjectChunk* FindChunkContainingPc(Address pc);
 
-
   // Iterates objects covered by dirty regions.
   void IterateDirtyRegions(ObjectSlotCallback func);
 
   // Frees unmarked objects.
   void FreeUnmarkedObjects();
 
   // Checks whether a heap object is in this space; O(1).
   bool Contains(HeapObject* obj);
 
   // Checks whether the space is empty.
@@ skipping 52 matching lines @@
 
  private:
   LargeObjectChunk* current_;
   HeapObjectCallback size_func_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_SPACES_H_