mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 04:50:07 +00:00
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/* Copyright (C) 2003-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* Test whether _res in glibc 2.1.x and earlier (before __res_state()
|
|
was introduced) works. Portable programs should never do the
|
|
dirty things below. */
|
|
|
|
#include <pthread.h>
|
|
#include <resolv.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
void *tf (void *resp)
|
|
{
|
|
if (resp == &_res || resp == __res_state ())
|
|
abort ();
|
|
_res.retry = 24;
|
|
return NULL;
|
|
}
|
|
|
|
void do_test (struct __res_state *resp)
|
|
{
|
|
if (resp != &_res || resp != __res_state ())
|
|
abort ();
|
|
if (_res.retry != 12)
|
|
abort ();
|
|
}
|
|
|
|
int main (void)
|
|
{
|
|
#undef _res
|
|
extern struct __res_state _res;
|
|
pthread_t th;
|
|
|
|
_res.retry = 12;
|
|
if (pthread_create (&th, NULL, tf, &_res) != 0)
|
|
{
|
|
puts ("create failed");
|
|
exit (1);
|
|
}
|
|
|
|
do_test (&_res);
|
|
|
|
if (pthread_join (th, NULL) != 0)
|
|
{
|
|
puts ("join failed");
|
|
exit (1);
|
|
}
|
|
|
|
do_test (&_res);
|
|
|
|
exit (0);
|
|
}
|