1-- C41304A.ADA 2 3-- Grant of Unlimited Rights 4-- 5-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, 6-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 7-- unlimited rights in the software and documentation contained herein. 8-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making 9-- this public release, the Government intends to confer upon all 10-- recipients unlimited rights equal to those held by the Government. 11-- These rights include rights to use, duplicate, release or disclose the 12-- released technical data and computer software in whole or in part, in 13-- any manner and for any purpose whatsoever, and to have or permit others 14-- to do so. 15-- 16-- DISCLAIMER 17-- 18-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR 19-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 20-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE 21-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 22-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A 23-- PARTICULAR PURPOSE OF SAID MATERIAL. 24--* 25-- OBJECTIVE: 26-- CHECK THAT L.R RAISES CONSTRAINT_ERROR WHEN: 27-- L DENOTES AN ACCESS OBJECT HAVING THE VALUE NULL. 28-- L IS A FUNCTION CALL DELIVERING THE ACCESS VALUE NULL. 29 30-- HISTORY: 31-- WKB 08/14/81 32-- JRK 08/17/81 33-- SPS 10/26/82 34-- TBN 03/26/86 PUT THE NON-EXISTENT COMPONENT CASES INTO C41304B. 35-- JET 01/05/88 MODIFIED HEADER FORMAT AND ADDED CODE TO PREVENT 36-- OPTIMIZATION. 37 38WITH REPORT; USE REPORT; 39PROCEDURE C41304A IS 40 41 TYPE R IS 42 RECORD 43 I : INTEGER; 44 END RECORD; 45 46 TYPE T IS ACCESS R; 47 48BEGIN 49 TEST ("C41304A", "CONSTRAINT_ERROR WHEN L IN L.R DENOTES A NULL " & 50 "ACCESS OBJECT OR A FUNCTION CALL DELIVERING " & 51 "NULL"); 52 53 -------------------------------------------------- 54 55 DECLARE 56 57 A : T := NEW R' (I => 1); 58 J : INTEGER; 59 60 BEGIN 61 62 IF EQUAL (4, 4) THEN 63 A := NULL; 64 END IF; 65 66 J := A.I; 67 FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A NULL ACCESS " & 68 "OBJECT"); 69 70 IF EQUAL (J,J) THEN 71 COMMENT ("NO EXCEPTION RAISED"); 72 END IF; 73 74 EXCEPTION 75 76 WHEN CONSTRAINT_ERROR => 77 NULL; 78 WHEN OTHERS => 79 FAILED ("WRONG EXCEPTION RAISED FOR A NULL ACCESS " & 80 "OBJECT"); 81 82 END; 83 84 -------------------------------------------------- 85 86 DECLARE 87 88 J : INTEGER; 89 90 FUNCTION F RETURN T IS 91 BEGIN 92 IF EQUAL (4, 4) THEN 93 RETURN NULL; 94 END IF; 95 RETURN NEW R' (I => 2); 96 END F; 97 98 BEGIN 99 100 J := F.I; 101 FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A FUNCTION CALL " & 102 "DELIVERING A NULL ACCESS VALUE"); 103 104 IF EQUAL (J,J) THEN 105 COMMENT ("NO EXCEPTION RAISED"); 106 END IF; 107 108 EXCEPTION 109 110 WHEN CONSTRAINT_ERROR => 111 NULL; 112 WHEN OTHERS => 113 FAILED ("WRONG EXCEPTION RAISED FOR A FUNCTION CALL " & 114 "DELIVERING A NULL ACCESS VALUE"); 115 116 END; 117 118 RESULT; 119END C41304A; 120