--- Libc/Libc-825.24/include/secure/_stdio.h
+++ Libc/Libc-763.13/include/secure/_stdio.h
@@ -43,26 +43,30 @@
 /* sprintf, vsprintf, snprintf, vsnprintf */
 
 extern int __sprintf_chk (char * __restrict, int, size_t,
-			  const char * __restrict, ...);
+			  const char * __restrict, ...)
+  __DARWIN_LDBL_COMPAT (__sprintf_chk);
 
 #define sprintf(str, ...) \
   __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
 
 extern int __snprintf_chk (char * __restrict, size_t, int, size_t,
-			   const char * __restrict, ...);
+			   const char * __restrict, ...)
+  __DARWIN_LDBL_COMPAT (__snprintf_chk);
 
 #if __DARWIN_C_LEVEL >= 200112L
 #define snprintf(str, len, ...) \
   __builtin___snprintf_chk (str, len, 0, __darwin_obsz(str), __VA_ARGS__)
 
 extern int __vsprintf_chk (char * __restrict, int, size_t,
-			   const char * __restrict, va_list);
+			   const char * __restrict, va_list)
+  __DARWIN_LDBL_COMPAT (__vsprintf_chk);
 
 #define vsprintf(str, format, ap) \
   __builtin___vsprintf_chk (str, 0, __darwin_obsz(str), format, ap)
 
 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);
 
 #define vsnprintf(str, len, format, ap) \
   __builtin___vsnprintf_chk (str, len, 0, __darwin_obsz(str), format, ap)