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Re: How to challenge a GCC patch?

Newsgroups	comp.lang.ada
Date	2021-09-28 00:38 -0700
References	<sis53t$du1$1@dont-email.me> <sis9jq$esi$1@dont-email.me>
Message-ID	<d8844cde-babd-42ad-ba03-d4b30883f66en@googlegroups.com> (permalink)
Subject	Re: How to challenge a GCC patch?
From	Arnaud Charlet <charlet@adacore.com>

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On Monday, September 27, 2021 at 1:23:39 PM UTC+2, Stéphane Rivière wrote:
> Le 27/09/2021 à 12:06, J-P. Rosen a écrit : 
> > AdaCore has introduced a patch in FSF GCC to remove ASIS support.
> This is all the more surprising since it seems to me that ASIS is still 
> in GNAT Pro. What a lack of fairness.

We have removed ASIS support first in our own trunk of GNAT, and then 6 months later we have removed it from the GCC FSF trunk, so talking about lack of fairness is, well, unfair.

Why? Because ASIS is no longer maintained as an internal standard and hasn't evolved beyond Ada 95 because there was not enough support in the community and among vendors, so we've ended up maintaining it on our own for many years, which lately has become too large a burden. In addition, maintaining ASIS tree generation in GNAT has been also a challenge and a resource drain because each time we make a change in the GNAT front-end, this may break ASIS and we may have to make difficult investigation and changes and sometimes almost impossible changes because there are conflicts between the need of a code generator (GNAT for GCC or LLVM) and the need of an Ada analysis library (ASIS).

So we've decided to address this burden by moving tree generation for ASIS in a separate branch, so that this maintenance burden on GCC trunk would disappear.

This has been done both in AdaCore's tree where ASIS now resides on a separate branch, and in GCC FSF where the tree generation is available in GCC 10.x and works well here, and is available for the community to contribute and maintain for as long as needed.

Arno

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Thread

How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-27 12:06 +0200
  Re: How to challenge a GCC patch? Stéphane Rivière <stef@genesix.org> - 2021-09-27 13:23 +0200
    Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-27 16:18 +0200
    Re: How to challenge a GCC patch? Arnaud Charlet <charlet@adacore.com> - 2021-09-28 00:38 -0700
      Re: How to challenge a GCC patch? Stéphane Rivière <stef@genesix.org> - 2021-09-29 18:26 +0200
        Re: How to challenge a GCC patch? Emmanuel Briot <briot.emmanuel@gmail.com> - 2021-09-29 12:04 -0700
          Re: How to challenge a GCC patch? "Luke A. Guest" <laguest@archeia.com> - 2021-09-30 00:29 +0100
            Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 08:23 +0200
              Re: How to challenge a GCC patch? "Luke A. Guest" <laguest@archeia.com> - 2021-09-30 08:53 +0100
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 10:13 +0200
                Re: How to challenge a GCC patch? "Luke A. Guest" <laguest@archeia.com> - 2021-09-30 09:26 +0100
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 12:54 +0200
                Re: How to challenge a GCC patch? "Luke A. Guest" <laguest@archeia.com> - 2021-09-30 13:27 +0100
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 17:25 +0200
                Re: How to challenge a GCC patch? "Randy Brukardt" <randy@rrsoftware.com> - 2021-09-30 19:37 -0500
                Re: How to challenge a GCC patch? "Randy Brukardt" <randy@rrsoftware.com> - 2021-09-30 19:33 -0500
                Re: How to challenge a GCC patch? "Randy Brukardt" <randy@rrsoftware.com> - 2021-09-30 19:30 -0500
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-10-01 11:41 +0200
                Re: How to challenge a GCC patch? "Randy Brukardt" <randy@rrsoftware.com> - 2021-10-02 04:14 -0500
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-10-04 14:30 +0200
                Re: How to challenge a GCC patch? "Randy Brukardt" <randy@rrsoftware.com> - 2021-10-13 20:48 -0500
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-10-14 08:09 +0200
              Re: How to challenge a GCC patch? "Luke A. Guest" <laguest@archeia.com> - 2021-09-30 08:53 +0100
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 10:16 +0200
                Re: How to challenge a GCC patch? "Luke A. Guest" <laguest@archeia.com> - 2021-09-30 09:28 +0100
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 12:56 +0200
                Re: How to challenge a GCC patch? "Luke A. Guest" <laguest@archeia.com> - 2021-09-30 13:27 +0100
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 17:28 +0200
          Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 08:19 +0200
            Re: How to challenge a GCC patch? "Randy Brukardt" <randy@rrsoftware.com> - 2021-09-30 19:18 -0500
              Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-10-01 11:24 +0200
                Re: How to challenge a GCC patch? "Randy Brukardt" <randy@rrsoftware.com> - 2021-10-02 04:34 -0500
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-10-04 14:26 +0200
                Re: How to challenge a GCC patch? "Randy Brukardt" <randy@rrsoftware.com> - 2021-10-13 20:40 -0500
                Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-10-14 08:04 +0200
      Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 07:57 +0200
        Re: How to challenge a GCC patch? Arnaud Charlet <charlet@adacore.com> - 2021-09-30 00:29 -0700
          Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 09:52 +0200
            Re: How to challenge a GCC patch? Arnaud Charlet <charlet@adacore.com> - 2021-09-30 01:21 -0700
              Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-10-01 11:56 +0200
              Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-10-01 14:29 +0200
            Re: How to challenge a GCC patch? Fabien Chouteau <fabien.chouteau@gmail.com> - 2021-09-30 01:28 -0700
  Re: How to challenge a GCC patch? Simon Wright <simon@pushface.org> - 2021-09-27 13:48 +0100
    Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-27 16:20 +0200
      Re: How to challenge a GCC patch? Emmanuel Briot <briot.emmanuel@gmail.com> - 2021-09-27 23:55 -0700
        Re: How to challenge a GCC patch? "J-P. Rosen" <rosen@adalog.fr> - 2021-09-30 08:44 +0200
      Re: How to challenge a GCC patch? nobody in particular <nobody@devnull.org> - 2021-09-29 08:58 +0000
        Re: How to challenge a GCC patch? Emmanuel Briot <briot.emmanuel@gmail.com> - 2021-09-29 02:34 -0700
        Re: How to challenge a GCC patch? Simon Wright <simon@pushface.org> - 2021-09-29 11:03 +0100
          Re: How to challenge a GCC patch? "Luke A. Guest" <laguest@archeia.com> - 2021-09-29 12:03 +0100
            Re: How to challenge a GCC patch? Simon Wright <simon@pushface.org> - 2021-09-29 12:07 +0100
      Re: How to challenge a GCC patch? Andreas ZEURCHER <ZUERCHER_Andreas@outlook.com> - 2021-09-29 11:58 -0700

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