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-- C41105A.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 CONSTRAINT_ERROR IS RAISED IF THE NAME PART OF AN

--     INDEXED COMPONENT DENOTES AN ACCESS OBJECT WHOSE VALUE IS NULL,

--     AND ALSO IF THE NAME IS A FUNCTION CALL DELIVERING NULL.

-- HISTORY:

--     WKB 07/29/81  CREATED ORIGINAL TEST.

--     SPS 10/26/82

--     JET 01/05/88  UPDATED HEADER FORMAT AND ADDED CODE TO PREVENT

--                   OPTIMIZATION.

WITH REPORT;

USE REPORT;

PROCEDURE C41105A IS

BEGIN

     TEST ("C41105A", "CONSTRAINT_ERROR FROM NAMES DENOTING A NULL " &

                      "ACCESS OBJECT AND A FUNCTION CALL DELIVERING " &

                      "NULL");

     DECLARE

          TYPE T1 IS ARRAY (1..2) OF INTEGER;

          TYPE A1 IS ACCESS T1;

          B : A1 := NEW T1' (1,2);

          I : INTEGER;

     BEGIN

          IF EQUAL (3,3) THEN

               B := NULL;

          END IF;

          I := B(1);

          FAILED ("CONSTRAINT_ERROR NOT RAISED - 1");

          IF EQUAL (I,I) THEN

               COMMENT ("NO EXCEPTION RAISED");

          END IF;

     EXCEPTION

          WHEN CONSTRAINT_ERROR => NULL;

          WHEN OTHERS           => FAILED ("WRONG EXCEPTION - 1");

     END;

     DECLARE

          TYPE T2 IS ARRAY (1..2) OF INTEGER;

          TYPE A2 IS ACCESS T2;

          I : INTEGER;

          FUNCTION F RETURN A2 IS

          BEGIN

               IF EQUAL (3,3) THEN

                    RETURN NULL;

               END IF;

               RETURN NEW T2' (1,2);

          END F;

     BEGIN

          I := F(1);

          FAILED ("CONSTRAINT_ERROR NOT RAISED - 2");

          IF EQUAL (I,I) THEN

               COMMENT ("NO EXCEPTION RAISED");

          END IF;

     EXCEPTION

          WHEN CONSTRAINT_ERROR => NULL;

          WHEN OTHERS           => FAILED ("WRONG EXCEPTION - 2");

     END;

     RESULT;

END C41105A;