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d4697bc9 | 1 | /* Copyright (C) 2003-2014 Free Software Foundation, Inc. |
0e9d6240 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
0e9d6240 UD |
18 | |
19 | /* Test whether _res in glibc 2.1.x and earlier (before __res_state() | |
20 | was introduced) works. Portable programs should never do the | |
21 | dirty things below. */ | |
22 | ||
23 | #include <pthread.h> | |
24 | #include <resolv.h> | |
25 | #include <stdlib.h> | |
26 | #include <stdio.h> | |
27 | ||
28 | void *tf (void *resp) | |
29 | { | |
30 | if (resp == &_res || resp == __res_state ()) | |
31 | abort (); | |
32 | _res.retry = 24; | |
33 | return NULL; | |
34 | } | |
35 | ||
36 | void do_test (struct __res_state *resp) | |
37 | { | |
38 | if (resp != &_res || resp != __res_state ()) | |
39 | abort (); | |
40 | if (_res.retry != 12) | |
41 | abort (); | |
42 | } | |
43 | ||
44 | int main (void) | |
45 | { | |
46 | #undef _res | |
47 | extern struct __res_state _res; | |
48 | pthread_t th; | |
49 | ||
50 | _res.retry = 12; | |
51 | if (pthread_create (&th, NULL, tf, &_res) != 0) | |
52 | { | |
53 | puts ("create failed"); | |
54 | exit (1); | |
55 | } | |
56 | ||
57 | do_test (&_res); | |
58 | ||
59 | if (pthread_join (th, NULL) != 0) | |
60 | { | |
61 | puts ("join failed"); | |
62 | exit (1); | |
63 | } | |
64 | ||
65 | do_test (&_res); | |
66 | ||
67 | exit (0); | |
68 | } |