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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Position of "use"
Date: Tue, 15 Jul 2014 21:04:11 +0100
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Date: 2014-07-15T21:04:11+01:00
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Adam Beneschan <adambeneschan@gmail.com> writes:

> On Tuesday, July 15, 2014 10:01:12 AM UTC-7, Simon Wright wrote:
>
>> But, in Ada83, a *pragma*'s scope extended over the whole compilation
>> (all the compilation units).
>
> I don't know that this was universally true; I don't see a general
> rule to that effect.  The rules vary from pragma to pragma.
> STORAGE_UNIT and SYSTEM_NAME (since removed) had to appear at the
> beginning of a compilation and applied to every compilation unit in
> the compilation (this seems to anticipate the "configuration pragma"
> rules of Ada 95 and beyond).  ELABORATE, however, appears in a context
> clause (as does the "use" clause) but only applies to one compilation
> unit.  Most of the pragmas were only allowed inside declarations.

-gnat83 isn't perfect, and even with it gnatchop -c doesn't treat
 Storage_Unit as a configuration pragma.