1-- C41105A.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 CONSTRAINT_ERROR IS RAISED IF THE NAME PART OF AN
27--     INDEXED COMPONENT DENOTES AN ACCESS OBJECT WHOSE VALUE IS NULL,
28--     AND ALSO IF THE NAME IS A FUNCTION CALL DELIVERING NULL.
29
30-- HISTORY:
31--     WKB 07/29/81  CREATED ORIGINAL TEST.
32--     SPS 10/26/82
33--     JET 01/05/88  UPDATED HEADER FORMAT AND ADDED CODE TO PREVENT
34--                   OPTIMIZATION.
35
36WITH REPORT;
37USE REPORT;
38PROCEDURE C41105A IS
39
40BEGIN
41     TEST ("C41105A", "CONSTRAINT_ERROR FROM NAMES DENOTING A NULL " &
42                      "ACCESS OBJECT AND A FUNCTION CALL DELIVERING " &
43                      "NULL");
44
45     DECLARE
46
47          TYPE T1 IS ARRAY (1..2) OF INTEGER;
48          TYPE A1 IS ACCESS T1;
49          B : A1 := NEW T1' (1,2);
50          I : INTEGER;
51
52     BEGIN
53
54          IF EQUAL (3,3) THEN
55               B := NULL;
56          END IF;
57
58          I := B(1);
59          FAILED ("CONSTRAINT_ERROR NOT RAISED - 1");
60
61          IF EQUAL (I,I) THEN
62               COMMENT ("NO EXCEPTION RAISED");
63          END IF;
64
65     EXCEPTION
66
67          WHEN CONSTRAINT_ERROR => NULL;
68          WHEN OTHERS           => FAILED ("WRONG EXCEPTION - 1");
69
70     END;
71
72
73     DECLARE
74
75          TYPE T2 IS ARRAY (1..2) OF INTEGER;
76          TYPE A2 IS ACCESS T2;
77          I : INTEGER;
78
79          FUNCTION F RETURN A2 IS
80          BEGIN
81               IF EQUAL (3,3) THEN
82                    RETURN NULL;
83               END IF;
84               RETURN NEW T2' (1,2);
85          END F;
86
87     BEGIN
88
89          I := F(1);
90          FAILED ("CONSTRAINT_ERROR NOT RAISED - 2");
91
92          IF EQUAL (I,I) THEN
93               COMMENT ("NO EXCEPTION RAISED");
94          END IF;
95
96     EXCEPTION
97
98          WHEN CONSTRAINT_ERROR => NULL;
99          WHEN OTHERS           => FAILED ("WRONG EXCEPTION - 2");
100
101     END;
102
103     RESULT;
104END C41105A;
105