LinuxThreads resolver fix.

[Mark Kettenis]

Here's the promised alternative to Jakub's patch to fix problems with
using the resolver state in the main thread of a multithreaded program.

Mark


2000-07-25  Mark Kettenis  <kettenis@gnu.org>

	* internals.h(__RES_PTHREAD_INTERNAL): Remove define.
	* pthread.c: Include <resolv.h>.
	(_res): Undefine.  Add extern declaration.


Index: linuxthreads/internals.h
===================================================================
RCS file: /cvs/glibc/libc/linuxthreads/internals.h,v
retrieving revision 1.52
diff -u -p -r1.52 internals.h
--- linuxthreads/internals.h	2000/07/24 16:29:07	1.52
+++ linuxthreads/internals.h	2000/07/25 16:49:08
@@ -20,15 +20,12 @@
 /* Includes */
 
 #include <limits.h>
+#include <resolv.h>
 #include <setjmp.h>
 #include <signal.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <bits/libc-tsd.h> /* for _LIBC_TSD_KEY_N */
-
-#define __RES_PTHREAD_INTERNAL
-#include <resolv.h> /* for per-thread resolver context */
-
 
 #include "pt-machine.h"
 #include "semaphore.h"
Index: linuxthreads/pthread.c
===================================================================
RCS file: /cvs/glibc/libc/linuxthreads/pthread.c,v
retrieving revision 1.58
diff -u -p -r1.58 pthread.c
--- linuxthreads/pthread.c	2000/07/24 17:23:50	1.58
+++ linuxthreads/pthread.c	2000/07/25 16:49:09
@@ -30,6 +30,12 @@
 #include "spinlock.h"
 #include "restart.h"
 
+/* We need the global/static resolver state here.  */
+#include <resolv.h>
+#undef _res
+
+extern struct __res_state _res;
+
 /* Sanity check.  */
 #if __ASSUME_REALTIME_SIGNALS && !defined __SIGRTMIN
 # error "This must not happen; new kernel assumed but old headers"