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28f540f4 RM |
1 | /* Copyright (C) 1991, 1992 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
17 | Cambridge, MA 02139, USA. */ | |
18 | ||
19 | #include <ansidecl.h> | |
20 | #include <stdio.h> | |
21 | #include <setjmp.h> | |
22 | #include <stdlib.h> | |
23 | ||
24 | static jmp_buf env; | |
25 | static int last_value = -1, lose = 0; | |
26 | ||
27 | void | |
28 | DEFUN(jump, (val), int val) | |
29 | { | |
30 | longjmp(env, val); | |
31 | } | |
32 | ||
33 | int | |
34 | DEFUN_VOID(main) | |
35 | { | |
36 | int value; | |
37 | ||
38 | value = setjmp(env); | |
39 | if (value != last_value + 1) | |
40 | { | |
41 | fputs("Shouldn't have ", stdout); | |
42 | lose = 1; | |
43 | } | |
44 | last_value = value; | |
45 | switch (value) | |
46 | { | |
47 | case 0: | |
48 | puts("Saved environment."); | |
49 | jump(0); | |
50 | default: | |
51 | printf("Jumped to %d.\n", value); | |
52 | if (value < 10) | |
53 | jump(value + 1); | |
54 | } | |
55 | ||
56 | if (lose || value != 10) | |
57 | puts("Test FAILED!"); | |
58 | else | |
59 | puts("Test succeeded!"); | |
60 | exit(lose ? EXIT_FAILURE : EXIT_SUCCESS); | |
61 | } |