1-- C41205A.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-- CHECK THAT CONSTRAINT_ERROR IS RAISED IF THE NAME PART OF A
26--   SLICE DENOTES AN ACCESS OBJECT WHOSE VALUE IS NULL, AND
27--   ALSO IF THE NAME IS A FUNCTION CALL DELIVERING NULL.
28
29-- WKB 8/6/81
30-- SPS 10/26/82
31-- EDS 07/14/98    AVOID OPTIMIZATION
32
33WITH REPORT;
34USE REPORT;
35PROCEDURE C41205A IS
36
37BEGIN
38     TEST ("C41205A", "CONSTRAINT_ERROR WHEN THE NAME PART OF A " &
39                      "SLICE DENOTES A NULL ACCESS OBJECT OR A " &
40                      "FUNCTION CALL DELIVERING NULL");
41
42     DECLARE
43
44          TYPE T IS ARRAY (INTEGER RANGE <> ) OF INTEGER;
45          SUBTYPE T1 IS T (1..5);
46          TYPE A1 IS ACCESS T1;
47          B : A1 := NEW T1' (1,2,3,4,5);
48          I : T (2..3);
49
50     BEGIN
51
52          IF EQUAL (3,3) THEN
53               B := NULL;
54          END IF;
55
56          I := B(2..3);
57          FAILED ("CONSTRAINT_ERROR NOT RAISED - 1 " & INTEGER'IMAGE(I(2)));
58
59     EXCEPTION
60
61          WHEN CONSTRAINT_ERROR => NULL;
62          WHEN OTHERS           => FAILED ("WRONG EXCEPTION - 1");
63
64     END;
65
66     DECLARE
67
68          TYPE T IS ARRAY (INTEGER RANGE <> ) OF INTEGER;
69          SUBTYPE T2 IS T (1..5);
70          TYPE A2 IS ACCESS T2;
71          I : T (2..5);
72
73          FUNCTION F RETURN A2 IS
74          BEGIN
75               IF EQUAL (3,3) THEN
76                    RETURN NULL;
77               END IF;
78               RETURN NEW T2' (1,2,3,4,5);
79          END F;
80
81     BEGIN
82
83          I := F(2..5);
84          FAILED ("CONSTRAINT_ERROR NOT RAISED - 2 " & INTEGER'IMAGE(I(2)));
85
86     EXCEPTION
87
88          WHEN CONSTRAINT_ERROR => NULL;
89          WHEN OTHERS           => FAILED ("WRONG EXCEPTION - 2");
90
91     END;
92
93     RESULT;
94END C41205A;
95