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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/113195] [13/14 regression] internal error on anonymous
 access type equality
Date: Mon, 08 Jan 2024 08:38:24 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113195

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|gnat bug box when comparing |[13/14 regression] internal
                   |access to subtype with      |error on anonymous access
                   |access inside record        |type equality
   Last reconfirmed|                            |2024-01-08
                 CC|                            |ebotcazou at gcc dot gnu.o=
rg
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
The record is actually irrelevant, this only comes from the designated type=
s:

package P is
   subtype I is Integer;
   A : access I;

   Acc : access Integer;

   function F return Boolean is (A =3D Acc);
end P;

eric@fomalhaut:~/build/gcc/native> ~/install/gcc/bin/gcc -c p.ads=20
+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3DGNAT BUG DETECTED=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+
| 14.0.0 20240108 (experimental) [master r14-6995-g4d31d660620]
(x86_64-suse-linux) GCC error:|
| in build_binary_op, at ada/gcc-interface/utils2.cc:1147                  |
| Error detected at p.ads:7:38=20

This worked up to GCC 12.=