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From: Manuel Gomez <mgrojo@gmail.com>
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Subject: Re: Gnu Emacs Ada mode 7.1.6 released.
Date: Sat, 7 Aug 2021 00:00:19 +0200
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Am 5/8/21 um 15:51 schrieb Fernando Oleo Blanco:
> On 05.08.21 15:42, Simon Wright wrote:
>> Which version of gnatcoll-db did you use, Fernando? The ada-mode README
>> isn't very prescriptive.
> 
> Oh, I forgot to mention this.
> 
> I used the master branch as of two days ago, so 2021/08/03. I thought 
> about downloading a tagged version, as of that day the 21.0.0. But since 
> I had already cloned master, I went with it.
> 
> I think this issue is related to this commit, which refers to that GNAT 
> bug directly: 
> https://github.com/AdaCore/gnatcoll-db/commit/c75234037fb4568739435fad204f206afe609a77 
> 
> 
> I am pretty sure it is the culprit.


I share my experience, just in case it's useful for anyone.

I tried with GNAT CE 2021 and gnatcoll-db 2021, but had problems with 
that combination. I finally used gnat-9 and gnatcoll packages provided 
by Ubuntu 20.04, but had to add ".all" for "error: access discriminant 
in return object..." and remove the option to consider warnings as 
errors in "standard_common.gpr". Different compiler versions produce 
different warnings, so that flag might be counterproductive for 
distribution. The problem with 2021 version might have been the same, 
not sure about it.

Regards