--- Libc/Libc-997.90.3/include/secure/_stdio.h
+++ Libc/Libc-763.11/include/secure/_stdio.h
@@ -32,55 +32,46 @@
 
 #if _USE_FORTIFY_LEVEL > 0
 
-#ifndef __has_builtin
-#define _undef__has_builtin
-#define __has_builtin(x) 0
+#undef sprintf
+#undef vsprintf
+
+#if __DARWIN_C_LEVEL >= 200112L
+#undef snprintf
+#undef vsnprintf
 #endif
 
 /* sprintf, vsprintf, snprintf, vsnprintf */
-#if __has_builtin(__builtin___sprintf_chk) || defined(__GNUC__)
+
 extern int __sprintf_chk (char * __restrict, int, size_t,
-			  const char * __restrict, ...);
+			  const char * __restrict, ...)
+  __DARWIN_LDBL_COMPAT (__sprintf_chk);
 
-#undef sprintf
 #define sprintf(str, ...) \
   __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
-#endif
+
+extern int __snprintf_chk (char * __restrict, size_t, int, size_t,
+			   const char * __restrict, ...)
+  __DARWIN_LDBL_COMPAT (__snprintf_chk);
 
 #if __DARWIN_C_LEVEL >= 200112L
-#if __has_builtin(__builtin___snprintf_chk) || defined(__GNUC__)
-extern int __snprintf_chk (char * __restrict, size_t, int, size_t,
-			   const char * __restrict, ...);
-
-#undef snprintf
 #define snprintf(str, len, ...) \
   __builtin___snprintf_chk (str, len, 0, __darwin_obsz(str), __VA_ARGS__)
-#endif
 
-#if __has_builtin(__builtin___vsprintf_chk) || defined(__GNUC__)
 extern int __vsprintf_chk (char * __restrict, int, size_t,
-			   const char * __restrict, va_list);
+			   const char * __restrict, va_list)
+  __DARWIN_LDBL_COMPAT (__vsprintf_chk);
 
-#undef vsprintf
 #define vsprintf(str, format, ap) \
   __builtin___vsprintf_chk (str, 0, __darwin_obsz(str), format, ap)
-#endif
 
-#if __has_builtin(__builtin___vsnprintf_chk) || defined(__GNUC__)
 extern int __vsnprintf_chk (char * __restrict, size_t, int, size_t,
-			    const char * __restrict, va_list);
+			    const char * __restrict, va_list)
+  __DARWIN_LDBL_COMPAT (__vsnprintf_chk);
 
-#undef vsnprintf
 #define vsnprintf(str, len, format, ap) \
   __builtin___vsnprintf_chk (str, len, 0, __darwin_obsz(str), format, ap)
 #endif
 
-#endif /* __DARWIN_C_LEVEL >= 200112L */
-
-#ifdef _undef__has_builtin
-#undef _undef__has_builtin
-#undef __has_builtin
 #endif
 
-#endif /* _USE_FORTIFY_LEVEL > 0 */
-#endif /* _SECURE__STDIO_H_ */
+#endif