gdb/testsuite/gdb.ada/null_overload/foo.adb

   1 --  Copyright 2021 Free Software Foundation, Inc.
   2 --
   3 --  This program is free software; you can redistribute it and/or modify
   4 --  it under the terms of the GNU General Public License as published by
   5 --  the Free Software Foundation; either version 3 of the License, or
   6 --  (at your option) any later version.
   7 --
   8 --  This program is distributed in the hope that it will be useful,
   9 --  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 --  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 --  GNU General Public License for more details.
  12 --
  13 --  You should have received a copy of the GNU General Public License
  14 --  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 procedure Foo is
  17
  18    type R_Type is null record;
  19    type R_Access is access R_Type;
  20
  21    type U_0 is mod 1;
  22    type U_P_T is access all U_0;
  23
  24    function F (R : R_Access) return Boolean is
  25    begin
  26       return True;
  27    end F;
  28
  29    function F (I : Integer) return Boolean is
  30    begin
  31       return False;
  32    end F;
  33
  34    B1 : constant Boolean := F (null);
  35    B2 : constant Boolean := F (0);
  36
  37    U : U_0 := 0;
  38    U_Ptr : U_P_T := null;
  39
  40 begin
  41    null; -- START
  42 end Foo;