1-- C87A05B.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 FUNCTION CALLS AND INDEXED COMPONENT EXPRESSIONS CAN BE
26-- DISTINGUISHED BY THE RULES OF OVERLOADING RESOLUTION.
27--
28-- PART 2 : CORRECT RESOLUTION IS FUNCTION CALL
29
30-- TRH  15 JULY 82
31-- DSJ  09 JUNE 83
32
33WITH REPORT; USE REPORT;
34
35PROCEDURE C87A05B IS
36
37     OK : BOOLEAN := TRUE;
38     TYPE VECTOR IS ARRAY (1 .. 5) OF BOOLEAN;
39
40     PROCEDURE P (ARG : CHARACTER := 'A') IS
41     BEGIN
42          OK := FALSE;
43     END P;
44
45     PROCEDURE P IS
46     BEGIN
47          OK := FALSE;
48     END P;
49
50     PROCEDURE P (ARG : INTEGER) IS               -- THIS IS CORRECT P
51     BEGIN
52          OK := (ARG = 1);
53     END P;
54
55     FUNCTION Y RETURN VECTOR IS
56     BEGIN
57          OK := FALSE;
58          RETURN (VECTOR'RANGE => TRUE);
59     END Y;
60
61     FUNCTION Y RETURN CHARACTER IS
62     BEGIN
63          OK := FALSE;
64          RETURN 'A';
65     END Y;
66
67     FUNCTION Y (ARG : FLOAT) RETURN FLOAT IS
68     BEGIN
69          OK := FALSE;
70          RETURN 0.0;
71     END Y;
72
73     FUNCTION Y (ARG : CHARACTER) RETURN INTEGER IS
74     BEGIN
75          OK := FALSE;
76          RETURN 0;
77     END Y;
78
79     FUNCTION Y (ARG : FLOAT) RETURN INTEGER IS   -- THIS IS CORRECT Y
80     BEGIN
81          RETURN 1;
82     END Y;
83
84     FUNCTION Z RETURN INTEGER IS
85     BEGIN
86          OK := FALSE;
87          RETURN 3;
88     END Z;
89
90     FUNCTION Z RETURN FLOAT IS                   -- THIS IS CORRECT Z
91     BEGIN
92          RETURN 3.0;
93     END Z;
94
95BEGIN
96     TEST ("C87A05B","OVERLOADING RESOLUTION FOR DISTINGUISHING " &
97           "FUNCTION CALLS FROM INDEXED COMPONENTS WHERE CORRECT " &
98           "RESOLUTION IS FUNCTION CALL");
99
100     P (Y (Z) );
101
102     IF NOT OK THEN
103          FAILED ("RESOLUTION INCORRECT");
104     END IF;
105
106     RESULT;
107END C87A05B;
108