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-- { dg-do run }
-- { dg-options "-O" }
with System; use System;
procedure Boolean_Bitfield is
Units_Per_Integer : constant :=
(Integer'Size + System.Storage_Unit - 1) / System.Storage_Unit;
type E_type is (Red, Blue, Green);
type Parent_Type is record
I : Integer range 0 .. 127 := 127;
C : Character := 'S';
B : Boolean := False;
E : E_Type := Blue;
end record;
for Parent_Type use record
C at 0 * Units_Per_Integer range 0 .. Character'Size - 1;
B at 1 * Units_Per_Integer range 0 .. Boolean'Size - 1;
I at 2 * Units_Per_Integer range 0 .. Integer'Size/2 - 1;
E at 3 * Units_Per_Integer range 0 .. Character'Size - 1;
end record;
type Derived_Type is new Parent_Type;
for Derived_Type use record
C at 1 * Units_Per_Integer range 1 .. Character'Size + 1;
B at 3 * Units_Per_Integer range 1 .. Boolean'Size + 1;
I at 5 * Units_Per_Integer range 1 .. Integer'Size/2 + 1;
E at 7 * Units_Per_Integer range 1 .. Character'Size + 1;
end record;
Rec : Derived_Type;
begin
Rec := (12, 'T', True, Red);
if (Rec.I /= 12) or (Rec.C /= 'T') or (not Rec.B) or (Rec.E /= Red) then
raise Program_Error;
end if;
end;
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