1-- C87B41A.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 OVERLOADING RESOLUTION USES THE RULE THAT:
26--
27-- THE NAMED VARIABLE AND THE RIGHT HAND SIDE EXPRESSION
28-- IN AN ASSIGNMENT STATEMENT MUST BE OF THE SAME TYPE. THIS TYPE
29-- MUST NOT BE A LIMITED TYPE.
30
31-- TRH  15 SEPT 82
32-- PWN 01/31/95  REMOVED INCONSISTENCIES WITH ADA 9X.
33
34WITH REPORT; USE REPORT;
35
36PROCEDURE C87B41A IS
37
38     TYPE NOTE IS (A, B, C, D, E, F, G);
39     TYPE POSITIVE IS NEW INTEGER RANGE 1 .. INTEGER'LAST;
40     TYPE ACC_CHAR IS ACCESS CHARACTER;
41     TYPE ACC_DUR  IS ACCESS DURATION;
42     TYPE ACC_POS  IS ACCESS POSITIVE;
43     TYPE ACC_INT  IS ACCESS INTEGER;
44     TYPE ACC_BOOL IS ACCESS BOOLEAN;
45     TYPE ACC_STR  IS ACCESS STRING;
46     TYPE ACC_FLT  IS ACCESS FLOAT;
47     TYPE ACC_NOTE IS ACCESS NOTE;
48
49     TYPE NEW_CHAR IS NEW CHARACTER;
50     TYPE NEW_DUR  IS NEW DURATION;
51     TYPE NEW_POS  IS NEW POSITIVE;
52     TYPE NEW_INT  IS NEW INTEGER;
53     TYPE NEW_BOOL IS NEW BOOLEAN;
54     TYPE NEW_FLT  IS NEW FLOAT;
55     TYPE NEW_NOTE IS NEW NOTE RANGE A .. F;
56     TASK TYPE T;
57
58     TASK BODY T IS
59     BEGIN
60          NULL;
61     END T;
62
63     FUNCTION G RETURN T IS
64          T1 : T;
65     BEGIN
66          FAILED ("LIMITED TYPES MAY NOT OCCUR IN ASSIGNMENT " &
67                  "STATEMENTS");
68          RETURN T1;
69     END G;
70
71     GENERIC
72          TYPE T IS PRIVATE;
73          ARG  : IN T;
74     FUNCTION F1 RETURN T;
75
76     FUNCTION F1 RETURN T IS
77     BEGIN
78          FAILED ("RESOLUTION INCORRECT - RIGHT HAND SIDE OF " &
79                  "ASSIGNMENT STATEMENT MUST MATCH TYPE OF VARIABLE");
80          RETURN ARG;
81     END F1;
82
83     FUNCTION F IS NEW F1 (ACC_CHAR, NEW CHARACTER);
84     FUNCTION F IS NEW F1 (ACC_DUR,  NEW DURATION);
85     FUNCTION F IS NEW F1 (ACC_POS,  NEW POSITIVE);
86     FUNCTION F IS NEW F1 (ACC_INT,  NEW INTEGER);
87     FUNCTION F IS NEW F1 (ACC_BOOL, NEW BOOLEAN);
88     FUNCTION F IS NEW F1 (ACC_STR,  NEW STRING(1..2) );
89     FUNCTION F IS NEW F1 (ACC_FLT,  NEW FLOAT);
90
91     FUNCTION F RETURN ACC_NOTE IS
92     BEGIN
93          RETURN  (NEW NOTE);
94     END F;
95
96     FUNCTION G IS NEW F1 (NEW_CHAR, 'G');
97     FUNCTION G IS NEW F1 (NEW_DUR,  1.0);
98     FUNCTION G IS NEW F1 (NEW_POS,  +10);
99     FUNCTION G IS NEW F1 (NEW_INT,  -10);
100     FUNCTION G IS NEW F1 (NEW_BOOL, TRUE);
101     FUNCTION G IS NEW F1 (NEW_FLT,  1.0);
102     FUNCTION G IS NEW F1 (NEW_NOTE, F);
103
104BEGIN
105     TEST ("C87B41A","OVERLOADED CONSTRUCTS ON BOTH SIDES OF THE " &
106           "ASSIGNMENT STATEMENT");
107
108     F.ALL := G;
109
110     RESULT;
111
112END C87B41A;
113