--- Libc/Libc-997.90.3/include/secure/_stdio.h
+++ Libc/Libc-1669.0.4/include/secure/_stdio.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007, 2010 Apple Inc. All rights reserved.
+ * Copyright (c) 2007, 2010, 2023 Apple Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  *
@@ -37,6 +37,7 @@
 #define __has_builtin(x) 0
 #endif
 
+#ifndef UNIFDEF_DRIVERKIT
 /* sprintf, vsprintf, snprintf, vsnprintf */
 #if __has_builtin(__builtin___sprintf_chk) || defined(__GNUC__)
 extern int __sprintf_chk (char * __restrict, int, size_t,
@@ -46,6 +47,7 @@
 #define sprintf(str, ...) \
   __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
 #endif
+#endif /* UNIFDEF_DRIVERKIT */
 
 #if __DARWIN_C_LEVEL >= 200112L
 #if __has_builtin(__builtin___snprintf_chk) || defined(__GNUC__)
@@ -57,6 +59,7 @@
   __builtin___snprintf_chk (str, len, 0, __darwin_obsz(str), __VA_ARGS__)
 #endif
 
+#ifndef UNIFDEF_DRIVERKIT
 #if __has_builtin(__builtin___vsprintf_chk) || defined(__GNUC__)
 extern int __vsprintf_chk (char * __restrict, int, size_t,
 			   const char * __restrict, va_list);
@@ -65,6 +68,7 @@
 #define vsprintf(str, format, ap) \
   __builtin___vsprintf_chk (str, 0, __darwin_obsz(str), format, ap)
 #endif
+#endif /* UNIFDEF_DRIVERKIT */
 
 #if __has_builtin(__builtin___vsnprintf_chk) || defined(__GNUC__)
 extern int __vsnprintf_chk (char * __restrict, size_t, int, size_t,