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-- C41205A.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.

--*

-- CHECK THAT CONSTRAINT_ERROR IS RAISED IF THE NAME PART OF A

--   SLICE DENOTES AN ACCESS OBJECT WHOSE VALUE IS NULL, AND

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

-- WKB 8/6/81

-- SPS 10/26/82

-- EDS 07/14/98    AVOID OPTIMIZATION

WITH REPORT;

USE REPORT;

PROCEDURE C41205A IS

BEGIN

     TEST ("C41205A", "CONSTRAINT_ERROR WHEN THE NAME PART OF A " &

                      "SLICE DENOTES A NULL ACCESS OBJECT OR A " &

                      "FUNCTION CALL DELIVERING NULL");

     DECLARE

          TYPE T IS ARRAY (INTEGER RANGE <> ) OF INTEGER;

          SUBTYPE T1 IS T (1..5);

          TYPE A1 IS ACCESS T1;

          B : A1 := NEW T1' (1,2,3,4,5);

          I : T (2..3);

     BEGIN

          IF EQUAL (3,3) THEN

               B := NULL;

          END IF;

          I := B(2..3);

          FAILED ("CONSTRAINT_ERROR NOT RAISED - 1 " & INTEGER'IMAGE(I(2)));

     EXCEPTION

          WHEN CONSTRAINT_ERROR => NULL;

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

     END;

     DECLARE

          TYPE T IS ARRAY (INTEGER RANGE <> ) OF INTEGER;

          SUBTYPE T2 IS T (1..5);

          TYPE A2 IS ACCESS T2;

          I : T (2..5);

          FUNCTION F RETURN A2 IS

          BEGIN

               IF EQUAL (3,3) THEN

                    RETURN NULL;

               END IF;

               RETURN NEW T2' (1,2,3,4,5);

          END F;

     BEGIN

          I := F(2..5);

          FAILED ("CONSTRAINT_ERROR NOT RAISED - 2 " & INTEGER'IMAGE(I(2)));

     EXCEPTION

          WHEN CONSTRAINT_ERROR => NULL;

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

     END;

     RESULT;

END C41205A;