Re: pointer questions

["Gene" <gene.ressler@gmail.com>]

The package System has an Address type with comparison operations
defined, and the package Address_To_Access_Conversions supports
conversions between addresses and pointers.

With the loss of some portability, you can also use
Unchecked_Conversion to turn one kind of pointer to another, so you can
set up your own "void*" equivalent type and convert to/from specific
pointers.

A universal pointer to function/procedure pointer is a marginally
useful and very dangerous idea.  But on most architectures you can use
unchecked conversions to implement this kind of thing and get away with
it.