gcc/testsuite/gnat.dg/discr6.adb

   1 -- { dg-do compile }
   2 -- { dg-options "-gnatdm -gnatws" }
   3
   4 with Discr6_Pkg;
   5
   6 procedure Discr6 is
   7
   8   type T_Bit is range 0..1;
   9   type T_Entier_16 is range -2**15 .. 2**15-1;
  10
  11   package My_Q is new Discr6_Pkg(T_Entier_16);
  12
  13   type T_Valeur is (BIT, Entier_16);
  14
  15   type R(D : T_Valeur) is record
  16     case D is
  17       when BIT => V_BIT : T_Bit;
  18       when Entier_16 => V_E16 : T_Entier_16;
  19     end case;
  20   end record;
  21   for R use record
  22     V_BIT at 0 range 0..7;
  23     V_E16 at 0 range 0..15;
  24     D     at 8 range 0..7;
  25   end record;
  26   for R'size use 128;
  27
  28   A : R(Entier_16);
  29   I : Integer;
  30
  31 begin
  32   I := My_Q.X(A.V_E16);
  33 end;