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From: Tucker Taft <stt@averstar.com>
Subject: Re: Beginner's questions
Date: 1999/05/10
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Date: 1999-05-10T00:00:00+00:00
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dennison@telepath.com wrote:
> 
> In article <FB6yDx.53x.0.-s@inmet.camb.inmet.com>,
>   stt@houdini.camb.inmet.com (Tucker Taft) wrote:
> > If you use "type String_Ptr is access constant String" to
> > declare your pointer type, then the language prevents
> > erroneous overwriting of the strings, and the compiler
> > (if it follows the Ada 95 implementation advice) will
> > allocate and initialize the pointed-to strings at link-time, rather than
> > run-time, exactly like "C" string literals.
> 
> Ohhhhh, nifty! That was effectively an Ada 83 code chunk I posted. I'll have
> to remember to use "access constant" next time it comes up.
> 
> Does your last sentence only apply for package specs and bodies, not for
> subprograms? When I use this trick, its typically in my "main" subprogram.

It should work in all environments, when the initial value is
known statically.  However, this is just implementation advice,
and I can imagine that some compilers are not yet doing the
right thing.
> 
> --
> T.E.D.
-- 
-Tucker Taft   stt@averstar.com   http://www.averstar.com/~stt/
Technical Director, Distributed IT Solutions  (www.averstar.com/tools)
AverStar (formerly Intermetrics, Inc.)   Burlington, MA  USA