Re: avoiding copy - Luajit FFI

[Duncan Cross <duncan.cross@...>]

On Tue, Jun 7, 2011 at 7:03 PM, Fabio Kaminski <fabiokaminski@gmail.com> wrote:
> but cast from void * to char * give me a new address (pointing to
> somewhere else) and not the same pointer:

This is incorrect. What you are seeing here, when you print the
pointer, is not the value of the pointer itself but of the FFI cdata
object that has been allocated to house it.

If you want to see the numeric value of a pointer, try
tonumber(ffi.cast('intptr_t', ptr)).

-Duncan