Update.

* Makefile (tests): Add tststack.  Add rule to build the program.
	* tststack.c: New file.

linuxthreads/tststack.c

@@ -0,0 +1,71 @@
+/* Tests for variable stacksize handling.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <stdio.h>
+
+static void *f1 (void *);
+static void *f2 (void *);
+
+int
+main (void)
+{
+  pthread_attr_t attr;
+  pthread_t th1 = 0;
+  pthread_t th2 = 0;
+  void *res1;
+  void *res2;
+
+  pthread_attr_init (&attr);
+  if (pthread_attr_setstacksize (&attr, 70*1024) != 0)
+    {
+      puts ("invalid stack size");
+      return 1;
+    }
+
+  pthread_create (&th1, NULL, f1, NULL);
+  pthread_create (&th2, &attr, f2, NULL);
+
+  pthread_join (th1, &res1);
+  pthread_join (th2, &res2);
+
+  printf ("res1 = %p\n", res1);
+  printf ("res2 = %p\n", res2);
+
+  return res1 != (void *) 1 || res2 != (void *) 2;
+}
+
+static void *
+f1 (void *parm)
+{
+  printf ("This is `%s'\n", __FUNCTION__);
+  fflush (stdout);
+
+  return (void *) 1;
+}
+
+static void *
+f2 (void *parm)
+{
+  printf ("This is `%s'\n", __FUNCTION__);
+  fflush (stdout);
+  sleep (1);
+
+  return (void *) 2;
+}