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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 18:29:19 +0000
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"Yannick Duchêne (Hibou57)" <yannick_duchene@yahoo.fr> writes:

> Le Mon, 14 Mar 2011 01:09:40 +0100, Simon Wright <simon@pushface.org>
> a écrit:
>> 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.
>
> Did you used GNAT Pro your self ? What I said was based of some
> comments from GNAT Pro users, which I trusted. I oftenly talked about
> these boring/exhausting bugs in GNAT GPL, and multiple GNAT Pro users
> replied these are fixed since long in GNAT Pro. I can trust only, as I
> do not know GNAT Pro.

The project I worked on was an Ada95 project which - for reasons I won't
bore you with - was stuck on a very old GNAT Pro release (and found very
few bugs). So I don't have hard experience of using up-to-date features
in GNAT Pro vs GPL.

There do seem to be more changes than I was expecting between 6.3.2 and
2010; 274 changed files out of 1970 in GPL. (This was after using J-P
Rosen's 'normalize' utility).