Re: Workqueues in Ada

["Jeffrey R. Carter" <spam.jrcarter.not@acm.nospam.org>]

Wiktor Moskwa wrote:
> 
> There is a little problem with using PragmAda components...
> It seems to be incompatible with Ada 2005, that my program uses.
> 
> GNAT GPL 2007 outputs:
> ======
> (Ada 2005) cannot copy object of a limited type (RM-2005 6.5(5.5/2))
> consider switching to return of access type
> =====

The PragmARCs are Ada 95. There are a number of functions that return 
record components of a generic formal limited private type. I think the 
thing to do for Ada 07 is change places where they have something like

return Node.Value;

to

return Result : Element do
    Assign (To => Result, From => Node.Value);
end return;

That introduces a copy that isn't necessarily required in Ada 95.

-- 
Jeff Carter
"C's solution to this [variable-sized array parameters] has real
problems, and people who are complaining about safety definitely
have a point."
Dennis Ritchie
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