| -- 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; |