gcc/testsuite/gnat.dg/pack5.adb

   1 -- { dg-do compile }
   2
   3 procedure Pack5 is
   4
   5   type Kind is (v1, v2, v3);
   6
   7   type Error (k : Kind := Kind'First) is record
   8     case k is
   9     when v1 =>
  10       null;
  11     when v2 =>
  12       null;
  13     when Others =>
  14       B : Boolean;
  15     end case;
  16   end record;
  17   pragma Pack (Error);
  18   for Error'Size use 16;
  19
  20   No_Error: constant Error := (k => v2);
  21
  22   type R (B : Boolean) is record
  23     E : Error;
  24   end record;
  25   pragma Pack(R);
  26   type Ptr is access R;
  27
  28   C : Ptr := new R (True);
  29
  30 begin
  31   C.E := No_Error;
  32 end;