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From: Gautier <gautier.demontmollin@maths.unine.ch>
Subject: Re: ada2cpp
Date: 2000/01/30
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Newsgroups: comp.lang.ada
Date: 2000-01-30T00:00:00+00:00
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> It is useful for some source compatability purposes. But it does *not*
> put Gnat into a mode where it is an Ada83 compiler.

Anyway, be reassured: the 83->95 upward compatilibility is ~99.995%.

I did port a >100'000 lines program from Alsys (Ada 83) to
GNAT, without ever using the -gnat83.

There were +/- 5 lines to change:
 - a pragma Elaborate_body in 1 package
 - generic_elementary_functions to Ada.(the same)
 - a 1 place, GNAT couldn't decide between
   character and wide_character (a loop).

That's all!

For my own projects in numerics I have plenty of packages
that travel from DEC Ada (83) to GNAT and vice versa
without any change...

-- 
Gautier

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