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From: "John W. Kennedy" <jwkenne@attglobal.net>
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Newsgroups: comp.lang.ada,comp.lang.fortran,comp.lang.pl1
Subject: Re: Ada vs Fortran for scientific applications
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Date: Tue, 11 Jul 2006 13:06:22 -0400
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Xref: g2news2.google.com comp.lang.ada:5622 comp.lang.fortran:11949
 comp.lang.pl1:1989
Date: 2006-07-11T13:06:22-04:00
List-Id: <comp.lang.ada>

Tom Linden wrote:
> PL/I on VAX has done global flow analysis since 1980.

Any language can have /a/ compiler that does global flow analysis, even 
Fortran. But as long as the PL/I language has DECLARE entry ENTRY 
(attributes, attributes....), the language cannot be regarded as 
actually supporting such a thing, even if, per accidens, an individual 
compiler does.

To turn it the other way, the most important Ada compiler (GNAT) does 
not have anything resembling the "repository" envisioned in the Ada LRM. 
But it achieves the appearance of one, as does (in its way) Java, 
because the Ada and Java language definitions wouldn't work otherwise.

-- 
John W. Kennedy
"The blind rulers of Logres
Nourished the land on a fallacy of rational virtue."
   -- Charles Williams.  "Taliessin through Logres: Prelude"