gcc/testsuite/gnat.dg/aggr18.adb

   1 -- { dg-do compile }
   2 -- { dg-options "-gnatws" }
   3
   4 procedure Aggr18 is
   5
   6    type Enum is (A, B);
   7
   8    type Rec (D : Enum := Enum'First) is record
   9       case D is
  10          when A => X : Integer;
  11          when B => null;
  12       end case;
  13    end record;
  14    for Rec'Size use 128;
  15    pragma Volatile (Rec);
  16
  17    type Config_T (D : Enum := Enum'First) is record
  18       N : Natural;
  19       R : Rec (D);
  20    end record;
  21
  22    C : Config_T := (D => A, N => 1, R => (D => A, X => 0));
  23
  24    type Arr is array (Natural range 1 .. C.N) of Boolean;
  25
  26 begin
  27    null;
  28 end;