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authorUlrich Drepper <drepper@redhat.com>2003-07-22 23:10:17 +0000
committerUlrich Drepper <drepper@redhat.com>2003-07-22 23:10:17 +0000
commit0e9d624072fd24ee7d113bcf9325e8fb21d2cf60 (patch)
treec1185e3d74e8db6363798cf48b9b83bd71ef568d /nptl/tst-_res1.c
parent11bf8ce1d6c28b4758cedeaea9558f6a071fe7d8 (diff)
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Update.
2003-07-22 Jakub Jelinek <jakub@redhat.com> * include/resolv.h (__resp): Declare. Define to __libc_resp if in libc.so. (_res): If USE___THREAD, define to (*__resp). * resolv/res_libc.c (_res): Normal .bss variable with compat_symbol even if USE___THREAD. (__resp): New __thread variable. (__libc_resp): New alias. * resolv/Versions (libc): Export _res@GLIBC_2.0 even if USE_TLS && HAVE___THREAD. Export __resp@@GLIBC_PRIVATE. * sysdeps/generic/res-state.c (__res_state): Return __resp if USE___THREAD.
Diffstat (limited to 'nptl/tst-_res1.c')
-rw-r--r--nptl/tst-_res1.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/nptl/tst-_res1.c b/nptl/tst-_res1.c
new file mode 100644
index 0000000..651e3cc
--- /dev/null
+++ b/nptl/tst-_res1.c
@@ -0,0 +1,69 @@
+/* Copyright (C) 2003 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* 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);
+}