gcc/testsuite/gnat.dg/bit_packed_array3.adb

   1 -- { dg-do run }
   2 -- { dg-options "-O2 -gnatp" }
   3
   4 procedure Bit_Packed_Array3 is
   5
   6    type Bitmap_T is array (1 .. 10) of Boolean;
   7    pragma Pack (Bitmap_T);
   8
   9    type Maps_T is record
  10       M1 : Bitmap_T;
  11    end record;
  12    pragma Pack (Maps_T);
  13    for Maps_T'Size use 10;
  14    pragma Suppress_Initialization (Maps_T);
  15
  16    Tmap : constant Bitmap_T := (others => True);
  17    Fmap : constant Bitmap_T := (others => False);
  18    Amap : constant Bitmap_T :=
  19      (1 => False, 2 => True, 3 => False, 4 => True, 5 => False,
  20       6 => True, 7 => False, 8 => True, 9 => False, 10 => True);
  21
  22    function Some_Maps return Maps_T is
  23       Value : Maps_T := (M1 => Amap);
  24    begin
  25       return Value;
  26    end;
  27    pragma Inline (Some_Maps);
  28
  29    Maps : Maps_T;
  30 begin
  31    Maps := Some_Maps;
  32
  33    for I in Maps.M1'Range loop
  34       if (I mod 2 = 0 and then not Maps.M1 (I))
  35         or else (I mod 2 /= 0 and then Maps.M1 (I))
  36       then
  37          raise Program_Error;
  38       end if;
  39    end loop;
  40 end;