Google has deprecated the following two functions:
Object::SetPointerInInternalField
Object::GetPointerInInternalField
...In CVV8, this change affects the following files:
ClassCreator.hpp
detail/convert_core.hpp
The syntax is exactly the same; so it is probably a drop-in replacement.
I applied the changes to my copy. The demo compiled fine and I think the messages from it are correct. However, I'm not really familiar with the demo's expected output (it doesn't just say PASS like a regression test), so you might want to check yourself.