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From: ncohen@watson.ibm.com (Norman H. Cohen)
Subject: Re: Gripe about Ada, rep specs that won't.
Date: 1996/03/25
Message-ID: <4j6dod$lbn@watnews1.watson.ibm.com>#1/1
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distribution: world
references: <00001a73+00002504@msn.com> <4iq71v$cvr@news4.digex.net>
organization: IBM T.J. Watson Research Center
reply-to: ncohen@watson.ibm.com
newsgroups: comp.lang.ada
Date: 1996-03-25T00:00:00+00:00
List-Id: <comp.lang.ada>

In article <dewar.827528663@schonberg>, dewar@cs.nyu.edu (Robert Dewar) writes: 

|> Norm said (with smiley)
|>
|> "Presumably No_GNAT_Pragmas prohibits GNAT-defined pragma names, but not
|> GNAT-defined pragma ARGUMENTS (such as No_GNAT_Pragmas).
|>
|> Or would a more accurate restriction name have been
|> No_More_GNAT_Pragmas_After_This_One?
|> "
|>
|> Actually that's wrong. pragma Restrictions is not an implentation defined
|> pragma, it is a predefined pragma. What is going on here is nothing to
|> do with impleentation defined pragmas, but instead see RM 13.12 (7)
|>
|> 7   The set of restrictions is implementation defined.
|>
|> No_GNAT_Pragmas is an implementation defined Restriction.

Right, that was my point. (pragma arguments = restrictions, pragma names
= pragmas)

|> Now it is true that this Restriction could be rejected by another
|> implementation, so I propose
|>
|> (a) to rename this No_Implementation_Dependent_Pragas
|>
|> (b) to encourage all vendors to at least recognize, and hopefully
|> implement, this restriction.
|>
|> Reactions?

A have a meta-reaction.  While most of these GNAT-defined pragmas,
restrictions, and packages are technically sound, if I were a competing
Ada implementor, I would be distressed by the so-far unchallenged role of
GNAT in setting de facto standards.  Why aren't the other implementors
demanding an immediate meeting of the URG to agree on a common set of
implementation-defined items?

--
Norman H. Cohen    ncohen@watson.ibm.com