Re: Adding Things to Package System

[Matthew Heaney <matthew_heaney@acm.org>]

claveman@cod.nosc.mil (Charles H. Sampson) writes:

>      Package System in both the Green Hills and ObjectAda implementa-
> tions contain a declaration similar to
> 
>       function "+" (Left : Address, Right : Integer) return Address;
> 
> as well as the commutative variation.  Green Hills, which is my vendor, 
> didn't tell me why they chose to ignore the advice.  I have no idea why
> ObjectAda did either; they're a colleague's vendor and he doesn't have
> time to ask them right now.  (He's in typical alligator-fighting mode.)


We're using the VADS compiler, and they did something _really_ dumb:

   function "+" (L : Address; Right : Integer) return Address;

   function "+" (L : Address; Right : Long_Integer) return Address;

So the call

   Addr := Base_Addr + 16#5000#;

is ambiguous!  So you have to do this

   Addr := Base_Addr + Integer'(16#5000#);