| -- Copyright 2019-2021 Free Software Foundation, Inc. |
| -- |
| -- This program is free software; you can redistribute it and/or modify |
| -- it under the terms of the GNU General Public License as published by |
| -- the Free Software Foundation; either version 3 of the License, or |
| -- (at your option) any later version. |
| -- |
| -- This program is distributed in the hope that it will be useful, |
| -- but WITHOUT ANY WARRANTY; without even the implied warranty of |
| -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| -- GNU General Public License for more details. |
| -- |
| -- You should have received a copy of the GNU General Public License |
| -- along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| with System; |
| with Pck; use Pck; |
| |
| procedure Foo is |
| type Key is (Alpha, Omega); |
| |
| type Inner(Disc : Key := Omega) is record |
| case Disc is |
| when Alpha => |
| Small : Integer range 0..255; |
| when others => |
| Large : Integer range 255..510; |
| end case; |
| end record; |
| pragma Unchecked_Union (Inner); |
| |
| type Outer(Disc : Key := Alpha) is record |
| case Disc is |
| when Alpha => |
| Field_One : Integer range 0..255; |
| when others => |
| Field_Two : Integer range 255..510; |
| end case; |
| end record; |
| pragma Unchecked_Union (Outer); |
| |
| type Pair is record |
| Pone : Inner; |
| Ptwo : Outer; |
| end record; |
| |
| Value : Pair; |
| |
| begin |
| Do_Nothing (Value'Address); -- BREAK |
| end Foo; |