1-- CB1010A.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 STORAGE_ERROR IS RAISED WHEN STORAGE ALLOCATED TO A TASK
26-- IS EXCEEDED.
27
28-- PNH 8/26/85
29-- JRK 8/30/85
30
31WITH REPORT; USE REPORT;
32
33PROCEDURE CB1010A IS
34
35     N : INTEGER := IDENT_INT (1);
36     M : INTEGER := IDENT_INT (0);
37
38     PROCEDURE OVERFLOW_STACK IS
39          A : ARRAY (1 .. 1000) OF INTEGER;
40     BEGIN
41          N := N + M;
42          A (N) := M;
43          IF N > M THEN  -- ALWAYS TRUE.
44               OVERFLOW_STACK;
45          END IF;
46          M := A (N);    -- TO PREVENT TAIL RECURSION OPTIMIZATION.
47     END OVERFLOW_STACK;
48
49BEGIN
50     TEST ("CB1010A", "CHECK THAT STORAGE_ERROR IS RAISED WHEN " &
51                      "STORAGE ALLOCATED TO A TASK IS EXCEEDED");
52
53     --------------------------------------------------
54
55     COMMENT ("CHECK TASKS THAT DO NOT HANDLE STORAGE_ERROR " &
56              "PRIOR TO RENDEZVOUS");
57
58     DECLARE
59
60          TASK T1 IS
61               ENTRY E1;
62          END T1;
63
64          TASK BODY T1 IS
65          BEGIN
66               OVERFLOW_STACK;
67               FAILED ("TASK T1 NOT TERMINATED BY STACK OVERFLOW");
68          END T1;
69
70     BEGIN
71
72          T1.E1;
73          FAILED ("NO EXCEPTION RAISED BY ENTRY CALL T1.E1");
74
75     EXCEPTION
76          WHEN TASKING_ERROR =>
77               IF N /= 1 OR M /= 0 THEN
78                    FAILED ("VALUES OF VARIABLES N OR M ALTERED - 1");
79               END IF;
80          WHEN OTHERS =>
81               FAILED ("WRONG EXCEPTION RAISED BY CALL OF ENTRY E1 " &
82                       "OF TERMINATED TASK T1");
83     END;
84
85     --------------------------------------------------
86
87     COMMENT ("CHECK TASKS THAT DO HANDLE STORAGE_ERROR PRIOR TO " &
88              "RENDEZVOUS");
89
90     N := IDENT_INT (1);
91     M := IDENT_INT (0);
92
93     DECLARE
94
95          TASK T2 IS
96               ENTRY E2;
97          END T2;
98
99          TASK BODY T2 IS
100          BEGIN
101               OVERFLOW_STACK;
102               FAILED ("EXCEPTION NOT RAISED BY STACK OVERFLOW IN " &
103                       "TASK T2");
104          EXCEPTION
105               WHEN STORAGE_ERROR =>
106                    ACCEPT E2;
107               WHEN OTHERS =>
108                    FAILED ("WRONG EXCEPTION RAISED IN TASK T2 BY " &
109                            "STACK OVERFLOW");
110          END T2;
111
112     BEGIN
113
114          T2.E2;
115          IF N /= 1 OR M /= 0 THEN
116               FAILED ("VALUES OF VARIABLES N OR M ALTERED - 2");
117          END IF;
118
119     EXCEPTION
120          WHEN OTHERS =>
121               FAILED ("EXCEPTION RAISED BY ENTRY CALL T2.E2");
122               ABORT T2;
123     END;
124
125     --------------------------------------------------
126
127     COMMENT ("CHECK TASKS THAT DO NOT HANDLE STORAGE_ERROR " &
128              "DURING RENDEZVOUS");
129
130     N := IDENT_INT (1);
131     M := IDENT_INT (0);
132
133     DECLARE
134
135          TASK T3 IS
136               ENTRY E3A;
137               ENTRY E3B;
138          END T3;
139
140          TASK BODY T3 IS
141          BEGIN
142               ACCEPT E3A DO
143                    OVERFLOW_STACK;
144                    FAILED ("EXCEPTION NOT RAISED IN ACCEPT E3A BY " &
145                            "STACK OVERFLOW");
146               END E3A;
147               FAILED ("EXCEPTION NOT PROPOGATED CORRECTLY IN TASK T3");
148          EXCEPTION
149               WHEN STORAGE_ERROR =>
150                    ACCEPT E3B;
151               WHEN OTHERS =>
152                    FAILED ("WRONG EXCEPTION RAISED IN TASK T3 BY " &
153                            "STACK OVERFLOW");
154          END T3;
155
156     BEGIN
157
158          T3.E3A;
159          FAILED ("NO EXCEPTION RAISED BY ENTRY CALL T3.E3A");
160
161     EXCEPTION
162          WHEN STORAGE_ERROR =>
163               T3.E3B;
164               IF N /= 1 OR M /= 0 THEN
165                    FAILED ("VALUES OF VARIABLES N OR M ALTERED - 3");
166               END IF;
167          WHEN TASKING_ERROR =>
168               FAILED ("TASKING_ERROR RAISED BY ENTRY CALL T3.E3A " &
169                       "INSTEAD OF STORAGE_ERROR");
170               ABORT T3;
171          WHEN OTHERS =>
172               FAILED ("WRONG EXCEPTION RAISED BY ENTRY CALL T3.E3A");
173               ABORT T3;
174     END;
175
176     --------------------------------------------------
177
178     RESULT;
179END CB1010A;
180