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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Gnu Emacs Ada mode 7.1.6 released.
Date: Thu, 05 Aug 2021 14:42:31 +0100
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Simon Wright <simon@pushface.org> writes:

> Fernando Oleo Blanco <irvise_ml@irvise.xyz> writes:
>
>> I can confirm that it works with GNAT community 2021. It is the first
>> time I got it working.
>
> In my case it didn't: resurrection of old problems,
>
> sal-gen_unbounded_definite_stacks.adb:209:07: error: access
> discriminant in return object would be a dangling reference
> sal-gen_unbounded_definite_stacks.adb:216:07: error: access
> discriminant in return object would be a dangling reference
> wisitoken-syntax_trees.ads:620:04: warning: in instantiation at
> sal-gen_unbounded_definite_vectors.adb:65 [-gnatwv]
> wisitoken-syntax_trees.ads:620:04: warning: aggregate not fully
> initialized [-gnatwv]
> etc etc
>
> This is because ada-mode-7.1.6 only "requires" wisi-3.1.3, which was
> already installed, rather than the latest 3.1.5 ... install 3.1.5,
> *delete 3.1.3*

I got a successful build with macOS GNAT CE 2021. However, using it
failed with

Execution of /Users/simon/.emacs.d/elpa/ada-mode-7.1.6/gpr_query terminated by unhandled exception
raised PROGRAM_ERROR : gnatcoll-sql_impl.adb:198 accessibility check failed
Load address: 0x1066e1000
Call stack traceback locations:
0x106932523 0x10693255f 0x10699b420 0x10699b5e9 0x10699b143 0x106988f88 0x1067830d4 0x1066f0fb1 0x106feb430

which is an unfortunate bleeding-edge interaction between the compiler
and gnatcoll-db:v21.0.0 (there are mutterings in the source at this line
about "GNAT bug OB03-009").

Building with FSF GCC 11.1.0 is looking good.

Which version of gnatcoll-db did you use, Fernando? The ada-mode README
isn't very prescriptive.