Allow compiling with strict aliasing enabled on GCC 4.4.

src/bootstrapper.cc

 // 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 38 matching lines @@
 // generate an index for each native JS file.
 class SourceCodeCache BASE_EMBEDDED {
  public:
   explicit SourceCodeCache(Script::Type type): type_(type), cache_(NULL) { }
 
   void Initialize(bool create_heap_objects) {
     cache_ = create_heap_objects ? Heap::empty_fixed_array() : NULL;
   }
 
   void Iterate(ObjectVisitor* v) {
-    v->VisitPointer(BitCast<Object**, FixedArray**>(&cache_));
+    v->VisitPointer(BitCast<Object**>(&cache_));
   }
 
 
   bool Lookup(Vector<const char> name, Handle<SharedFunctionInfo>* handle) {
     for (int i = 0; i < cache_->length(); i+=2) {
       SeqAsciiString* str = SeqAsciiString::cast(cache_->get(i));
       if (str->IsEqualTo(name)) {
         *handle = Handle<SharedFunctionInfo>(
             SharedFunctionInfo::cast(cache_->get(i + 1)));
         return true;
@@ skipping 1743 matching lines @@
 }
 
 
 // Restore statics that are thread local.
 char* BootstrapperActive::RestoreState(char* from) {
   nesting_ = *reinterpret_cast<int*>(from);
   return from + sizeof(nesting_);
 }
 
 } }  // namespace v8::internal