Merge GDB 7.5.1

gdb/testsuite/gdb.multi/watchpoint-multi.c

-/* Clean exit of the thread group leader should not break GDB.
+/* This testcase is part of GDB, the GNU debugger.
 
-   Copyright 2007, 2011-2012 Free Software Foundation, Inc.
+   Copyright 2012 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program 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 General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <pthread.h>
 #include <assert.h>
-#include <unistd.h>
 
-static volatile pthread_t main_thread;
+static volatile int a, b, c;
+
+static void
+marker_exit (void)
+{
+  a = 1;
+}
 
 static void *
 start (void *arg)
 {
-  int i;
+  b = 2;
+  c = 3;
 
-  i = pthread_join (main_thread, NULL);
-  assert (i == 0);
-
-  return arg;   /* break-here */
+  return NULL;
 }
 
 int
 main (void)
 {
   pthread_t thread;
   int i;
 
-  main_thread = pthread_self ();
-
   i = pthread_create (&thread, NULL, start, NULL);
   assert (i == 0);
+  i = pthread_join (thread, NULL);
+  assert (i == 0);
 
-  pthread_exit (NULL);
-  /* NOTREACHED */
+  marker_exit ();
   return 0;
 }