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-- C41304B.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 L.R RAISES CONSTRAINT_ERROR WHEN:

--        L DENOTES A RECORD OBJECT SUCH THAT, FOR THE EXISTING

--           DISCRIMINANT VALUES, THE COMPONENT DENOTED BY R DOES

--           NOT EXIST.

--        L IS A FUNCTION CALL DELIVERING A RECORD VALUE SUCH THAT,

--           FOR THE EXISTING DISCRIMINANT VALUES, THE COMPONENT

--           DENOTED BY R DOES NOT EXIST.

--        L IS AN ACCESS OBJECT AND THE OBJECT DESIGNATED BY THE ACCESS

--           VALUE IS SUCH THAT COMPONENT R DOES NOT EXIST FOR THE

--           OBJECT'S CURRENT DISCRIMINANT VALUES.

--        L IS A FUNCTION CALL RETURNING AN ACCESS VALUE AND THE OBJECT

--           DESIGNATED BY THE ACCESS VALUE IS SUCH THAT COMPONENT R

--           DOES NOT EXIST FOR THE OBJECT'S CURRENT DISCRIMINANT

--           VALUES.

-- HISTORY:

--     TBN 05/23/86  CREATED ORIGINAL TEST.

--     JET 01/08/88  MODIFIED HEADER FORMAT AND ADDED CODE TO

--                   PREVENT OPTIMIZATION.

WITH REPORT; USE REPORT;

PROCEDURE C41304B IS

     TYPE V (DISC : INTEGER := 0) IS

          RECORD

               CASE DISC IS

                    WHEN 1 =>

                         X : INTEGER;

                    WHEN OTHERS =>

                         Y : INTEGER;

               END CASE;

          END RECORD;

     TYPE T IS ACCESS V;

BEGIN

     TEST ("C41304B", "CHECK THAT L.R RAISES CONSTRAINT_ERROR WHEN " &

                      "THE COMPONENT DENOTED BY R DOES NOT EXIST");

     DECLARE

          VR : V := (DISC => 0, Y => 4);

          J : INTEGER;

     BEGIN

          IF EQUAL (4, 4) THEN

               VR := (DISC => 1, X => 3);

          END IF;

          J := VR.Y;

          FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A RECORD OBJECT");

          -- IF STATEMENT PREVENTS OPTIMIZING OF VARIABLE J.

          IF EQUAL (J,3) THEN

               FAILED ("CONSTRAINT_ERROR NOT RAISED - 1");

          END IF;

     EXCEPTION

          WHEN CONSTRAINT_ERROR =>

               NULL;

          WHEN OTHERS =>

               FAILED ("WRONG EXCEPTION RAISED FOR A RECORD OBJECT");

     END;

     --------------------------------------------------

     DECLARE

          J : INTEGER;

          FUNCTION F RETURN V IS

          BEGIN

               IF EQUAL (4, 4) THEN

                    RETURN (DISC => 2, Y => 3);

               END IF;

               RETURN (DISC => 1, X => 4);

          END F;

     BEGIN

          J := F.X;

          FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A FUNCTION CALL " &

                  "DELIVERING A RECORD VALUE");

          -- IF STATEMENT PREVENTS OPTIMIZING OF VARIABLE J.

          IF EQUAL (J,3) THEN

               FAILED ("CONSTRAINT_ERROR NOT RAISED - 2");

          END IF;

     EXCEPTION

          WHEN CONSTRAINT_ERROR =>

               NULL;

          WHEN OTHERS =>

               FAILED ("WRONG EXCEPTION RAISED FOR A FUNCTION CALL " &

                       "DELIVERING A RECORD VALUE");

     END;

     --------------------------------------------------

     DECLARE

          A : T := NEW V' (DISC => 0, Y => 4);

          J : INTEGER;

     BEGIN

          IF EQUAL (4, 4) THEN

               A := NEW V' (DISC => 1, X => 3);

          END IF;

          J := A.Y;

          FAILED ("CONSTRAINT_ERROR NOT RAISED FOR AN ACCESS OBJECT");

          -- IF STATEMENT PREVENTS OPTIMIZING OF VARIABLE J.

          IF EQUAL (J,3) THEN

               FAILED ("CONSTRAINT_ERROR NOT RAISED - 3");

          END IF;

     EXCEPTION

          WHEN CONSTRAINT_ERROR =>

               NULL;

          WHEN OTHERS =>

               FAILED ("WRONG EXCEPTION RAISED FOR AN ACCESS OBJECT");

     END;

     --------------------------------------------------

     DECLARE

          J : INTEGER;

          FUNCTION F RETURN T IS

          BEGIN

               IF EQUAL (4, 4) THEN

                    RETURN NEW V' (DISC => 2, Y => 3);

               END IF;

               RETURN NEW V' (DISC => 1, X => 4);

          END F;

     BEGIN

          J := F.X;

          FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A FUNCTION CALL " &

                  "DELIVERING AN ACCESS VALUE");

          -- IF STATEMENT PREVENTS OPTIMIZING OF VARIABLE J.

          IF EQUAL (J,3) THEN

               FAILED ("CONSTRAINT_ERROR NOT RAISED - 4");

          END IF;

     EXCEPTION

          WHEN CONSTRAINT_ERROR =>

               NULL;

          WHEN OTHERS =>

               FAILED ("WRONG EXCEPTION RAISED FOR A FUNCTION CALL " &

                       "DELIVERING AN ACCESS VALUE");

     END;

     RESULT;

END C41304B;