Version 3.19.17.

include/v8.h

 // 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 202 matching lines @@
 };
 
 // --- Handles ---
 
 #define TYPE_CHECK(T, S)                                       \
   while (false) {                                              \
     *(static_cast<T* volatile*>(0)) = static_cast<S*>(0);      \
   }
 
 
+#define V8_USE_UNSAFE_HANDLES
+
 /**
  * An object reference managed by the v8 garbage collector.
  *
  * All objects returned from v8 have to be tracked by the garbage
  * collector so that it knows that the objects are still alive.  Also,
  * because the garbage collector may move objects, it is unsafe to
  * point directly to an object.  Instead, all objects are stored in
  * handles which are known by the garbage collector and updated
  * whenever an object moves.  Handles should always be passed by value
  * (except in cases like out-parameters) and they should never be
@@ skipping 250 matching lines @@
  */
 template <class T> class Persistent // NOLINT
 #ifdef V8_USE_UNSAFE_HANDLES
     : public Handle<T> {
 #else
   { // NOLINT
 #endif
  public:
 #ifndef V8_USE_UNSAFE_HANDLES
   V8_INLINE(Persistent()) : val_(0) { }
-  // TODO(dcarney): add this back before cutover.
-//  V8_INLINE(~Persistent()) {
-//  Dispose();
-//  }
+  V8_INLINE(~Persistent()) {
+    // TODO(dcarney): add this back before cutover.
+    // Dispose();
+  }
   V8_INLINE(bool IsEmpty() const) { return val_ == 0; }
   // TODO(dcarney): remove somehow before cutover
   // The handle should either be 0, or a pointer to a live cell.
   V8_INLINE(void Clear()) { val_ = 0; }
 
   /**
    * A constructor that creates a new global cell pointing to that. In contrast
    * to the copy constructor, this creates a new persistent handle which needs
    * to be separately disposed.
    */
@@ skipping 5858 matching lines @@
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_