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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: What's stopping you from using Ada for your next commercial
 project?
Date: Mon, 14 Mar 2011 00:09:40 +0000
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Date: 2011-03-14T00:09:40+00:00
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Maciej Sobczak <see.my.homepage@gmail.com> writes:

> On 13 Mar, 11:24, Yannick Duchêne (Hibou57) <yannick_duch...@yahoo.fr>
> wrote:
>
>> If you are not that new to this Usenet, you may have learned GNAT GPL is  
>> not the same as GNAT Pro, regarding bugs. Some bugs known for long in GNAT  
>> GPL, seems to be fixed since as much long in GNAT Pro.
>
> And what is the purpose of maintaining this difference?
> Is it to motivate newcomers to buy GNAT Pro or rather to discourage
> them completely and let them use C++/Java/.NET instead?
>
> As far as I'm concerned, GNAT GPL represents the current state of
> technology that AdaCore sells to commercial customers. That is, I can
> see it and treat the GPL package for evaluation and then go buy the
> Pro package once I decide that I need it. Seems logical to me.
>
> Note: I cannot be wrong in the above. Even if I'm wrong, I'm still
> right. This is because I'm the potential customer - if I get the
> impression that GNAT is crap, then they just lost the chance to sell
> me anything, even if in fact Pro is better than GPL. Lesson: don't
> play with impressions, always make good ones.

I'm no longer in a position to look at supported versions, but I'm not
at all sure that Pro is that much better than GPL (treating it as just a
compiler and disregarding AdaCore's support offering, which is what
you're actually paying for). I certainly don't recognise Yannick's
remarks.

Pro 6.3.2 was ~ June 2010, based on GCC 4.3, and as far as I can tell
GPL 2010 was pretty much the same. There hadn't been another Pro release
by 1 Jan 2011, and the current release is 6.4.1 of 16 Feb 2011, based on
4.5.