--- Libc/Libc-320/include/err.h
+++ Libc/Libc-1583.0.14/include/err.h
@@ -1,9 +1,7 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000, 2003, 2004, 2008 Apple Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
@@ -65,26 +63,30 @@
  * places (<machine/varargs.h> and <machine/stdarg.h>), so if we include one
  * of them here we may collide with the utility's includes.  It's unreasonable
  * for utilities to have to include one of them to include err.h, so we get
- * _BSD_VA_LIST_ from <machine/ansi.h> and use it.
+ * __darwin_va_list from <machine/_type.h> and use it.
  */
-#include <machine/ansi.h>
 #include <sys/cdefs.h>
+#include <_types.h>
+#include <Availability.h>
 
 __BEGIN_DECLS
-void	err(int, const char *, ...) __dead2;
-void	verr(int, const char *, _BSD_VA_LIST_) __dead2;
-void	errc(int, int, const char *, ...) __dead2;
-void	verrc(int, int, const char *, _BSD_VA_LIST_) __dead2;
-void	errx(int, const char *, ...) __dead2;
-void	verrx(int, const char *, _BSD_VA_LIST_) __dead2;
-void	warn(const char *, ...);
-void	vwarn(const char *, _BSD_VA_LIST_);
-void	warnc(int, const char *, ...);
-void	vwarnc(int, const char *, _BSD_VA_LIST_);
-void	warnx(const char *, ...);
-void	vwarnx(const char *, _BSD_VA_LIST_);
+void	err(int, const char *, ...) __cold __dead2 __printflike(2, 3);
+void	verr(int, const char *, __darwin_va_list) __cold __dead2 __printflike(2, 0);
+void	errc(int, int, const char *, ...) __cold __dead2 __printflike(3, 4);
+void	verrc(int, int, const char *, __darwin_va_list) __cold __dead2 __printflike(3, 0);
+void	errx(int, const char *, ...) __cold __dead2 __printflike(2, 3);
+void	verrx(int, const char *, __darwin_va_list) __cold __dead2 __printflike(2, 0);
+void	warn(const char *, ...) __cold __printflike(1, 2);
+void	vwarn(const char *, __darwin_va_list) __cold __printflike(1, 0);
+void	warnc(int, const char *, ...) __cold __printflike(2, 3);
+void	vwarnc(int, const char *, __darwin_va_list) __cold __printflike(2, 0);
+void	warnx(const char *, ...) __cold __printflike(1, 2);
+void	vwarnx(const char *, __darwin_va_list) __cold __printflike(1, 0);
 void	err_set_file(void *);
-void	err_set_exit(void (*)(int));
+void	err_set_exit(void (* _Nullable)(int));
+#ifdef __BLOCKS__
+void	err_set_exit_b(void (^ _Nullable)(int)) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
+#endif /* __BLOCKS__ */
 
 __END_DECLS