1-- C41206A.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 A RANGE L..R, WHERE L=SUCC(R) CAN BE USED TO FORM
26--   A NULL SLICE FROM AN ARRAY WHEN:
27--        BOTH L AND R SATISFY THE INDEX CONSTRAINT;
28--        L SATISFIES THE INDEX CONSTRAINT, R DOES NOT (BUT IT
29--             BELONGS TO THE BASE TYPE OF THE INDEX);
30--        L SATISFIES THE CONSTRAINT IMPOSED BY THE TYPE MARK OF
31--             THE INDEX, BUT NOT THE CONSTRAINT ASSOCIATED WITH
32--             THE INDEX;
33--        THE ARRAY IS NULL, AND L IS IN THE RANGE OF THE INDEX SUBTYPE.
34
35-- WKB 8/10/81
36
37WITH REPORT;
38USE REPORT;
39PROCEDURE C41206A IS
40
41     TYPE SMALL IS RANGE 1..100;
42     TYPE T IS ARRAY (SMALL RANGE <> ) OF INTEGER;
43     SUBTYPE T1 IS T(5..10);
44     A : T1 := (5,6,7,8,9,10);
45     B : T(8..7) := (8..7 => 1);
46
47BEGIN
48     TEST ("C41206A", "USING A RANGE L..R, WHERE L=SUCC(R), " &
49                      "TO FORM A NULL SLICE FROM AN ARRAY");
50
51     BEGIN
52          IF A (7..6) /= B OR A (SMALL(IDENT_INT(7))..6) /= B THEN
53               FAILED ("SLICE NOT NULL - 1");
54          END IF;
55     EXCEPTION
56          WHEN OTHERS => FAILED ("EXCEPTION RAISED - 1");
57     END;
58
59     BEGIN
60          IF A (5..4) /= B OR A (SMALL(IDENT_INT(5))..4) /= B THEN
61               FAILED ("SLICE NOT NULL - 2");
62          END IF;
63     EXCEPTION
64          WHEN OTHERS => FAILED ("EXCEPTION RAISED - 2");
65     END;
66
67     BEGIN
68          IF A (50..49) /= B OR A (SMALL(IDENT_INT(50))..49) /= B THEN
69               FAILED ("SLICE NOT NULL - 3");
70          END IF;
71     EXCEPTION
72          WHEN OTHERS => FAILED ("EXCEPTION RAISED - 3");
73     END;
74
75     BEGIN
76          IF B (50..49) /= B OR B (SMALL(IDENT_INT(50))..49) /= B THEN
77               FAILED ("SLICE NOT NULL - 4");
78          END IF;
79     EXCEPTION
80          WHEN OTHERS => FAILED ("EXCEPTION RAISED - 4");
81     END;
82
83     RESULT;
84END C41206A;
85