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-- C43104A.ADA

--                             Grant of Unlimited Rights

--

--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,

--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 

--     unlimited rights in the software and documentation contained herein.

--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 

--     this public release, the Government intends to confer upon all 

--     recipients unlimited rights  equal to those held by the Government.  

--     These rights include rights to use, duplicate, release or disclose the 

--     released technical data and computer software in whole or in part, in 

--     any manner and for any purpose whatsoever, and to have or permit others 

--     to do so.

--

--                                    DISCLAIMER

--

--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 

--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE

--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 

--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

-- OBJECTIVE:

--     CHECK THAT WITH THE TYPE OF THE AGGREGATE RESOLVED, THE

--     DISCRIMINANT MAY BE USED TO DECIDE TO WHICH OF THE VARIANT'S

--     SUBTYPES THE AGGREGATE BELONGS.

-- HISTORY:

--     DHH 08/08/88 CREATED ORIGINAL TEST.

WITH REPORT; USE REPORT;

PROCEDURE C43104A IS

     TYPE INT IS RANGE 0 .. 10;

     TYPE VAR_REC(BOOL : BOOLEAN := TRUE) IS

          RECORD

               CASE BOOL IS

                    WHEN TRUE =>

                         X : INTEGER;

                    WHEN FALSE =>

                         Y : INT;

               END CASE;

          END RECORD;

     SUBTYPE S_TRUE IS VAR_REC(TRUE);

     SUBTYPE S_FALSE IS VAR_REC(FALSE);

     PROCEDURE CHECK(P : IN S_TRUE) IS

     BEGIN

          IF P.BOOL = FALSE THEN

               FAILED("WRONG PROCEDURE ENTERED");

          END IF;

     EXCEPTION

          WHEN OTHERS =>

               FAILED("EXCEPTION RAISED INSIDE PROCEDURE");

     END CHECK;

BEGIN

     TEST("C43104A", "CHECK THAT WITH THE TYPE OF THE AGGREGATE " &

                     "RESOLVED, THE DISCRIMINANT MAY BE USED TO " &

                     "DECIDE TO WHICH OF THE VARIANT'S SUBTYPES " &

                     "THE AGGREGATE BELONGS");

     CHECK((TRUE, 1));

     BEGIN

          CHECK((FALSE, 2));

          FAILED("PROCEDURE CALL USING '(FALSE, 2)' DID NOT RAISE " &

                 "EXCEPTION");

     EXCEPTION

          WHEN CONSTRAINT_ERROR =>

               NULL;

          WHEN OTHERS =>

               FAILED("INCORRECT EXCEPTION RAISED ON PROCEDURE CALL " &

                      "USING '(FALSE,2)'");

     END;

     RESULT;

END C43104A;