Do not call reinterpret_cast when converting from NULL.

src/heap.cc

 // Copyright 2012 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 7332 matching lines @@
 
 void HeapIterator::reset() {
   // Restart the iterator.
   Shutdown();
   Init();
 }
 
 
 #ifdef DEBUG
 
-Object* const PathTracer::kAnyGlobalObject = reinterpret_cast<Object*>(NULL);
+Object* const PathTracer::kAnyGlobalObject = NULL;
 
 class PathTracer::MarkVisitor: public ObjectVisitor {
  public:
   explicit MarkVisitor(PathTracer* tracer) : tracer_(tracer) {}
   void VisitPointers(Object** start, Object** end) {
     // Scan all HeapObject pointers in [start, end)
     for (Object** p = start; !tracer_->found() && (p < end); p++) {
       if ((*p)->IsHeapObject())
         tracer_->MarkRecursively(p, this);
     }
@@ skipping 771 matching lines @@
   if (FLAG_parallel_recompilation) {
     heap_->relocation_mutex_->Lock();
 #ifdef DEBUG
     heap_->relocation_mutex_locked_by_optimizer_thread_ =
         heap_->isolate()->optimizing_compiler_thread()->IsOptimizerThread();
 #endif  // DEBUG
   }
 }
 
 } }  // namespace v8::internal