--- Libc/Libc-825.26/stdlib/FreeBSD/exit.c
+++ Libc/Libc-583/stdlib/FreeBSD/exit.c
@@ -10,6 +10,10 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
@@ -31,18 +35,24 @@
 static char sccsid[] = "@(#)exit.c	8.1 (Berkeley) 6/4/93";
 #endif /* LIBC_SCCS and not lint */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdlib/exit.c,v 1.9 2007/01/09 00:28:09 imp Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/stdlib/exit.c,v 1.7 2003/12/19 17:11:20 kan Exp $");
 
 #include "namespace.h"
 #include <stdlib.h>
 #include <unistd.h>
 #include "un-namespace.h"
+#include "atexit.h"
 
-#include "atexit.h"
-#include "libc_private.h"
+void (*__cleanup)();
 
-void (*__cleanup)(void);
-extern void __exit(int);
+/*
+ * This variable is zero until a process has created a thread.
+ * It is used to avoid calling locking functions in libc when they
+ * are not required. By default, libc is intended to be(come)
+ * thread-safe, but without a (significant) penalty to non-threaded
+ * processes.
+ */
+int	__isthreaded	= 0;
 
 /*
  * Exit, flushing stdio buffers if necessary.
@@ -51,8 +61,13 @@
 exit(status)
 	int status;
 {
+	/* Ensure that the auto-initialization routine is linked in: */
+	extern int _thread_autoinit_dummy_decl;
+
+	_thread_autoinit_dummy_decl = 1;
+
 	__cxa_finalize(NULL);
 	if (__cleanup)
 		(*__cleanup)();
-	__exit(status);
+	_exit(status);
 }