X-Git-Url: https://git.saurik.com/apple/libc.git/blobdiff_plain/ad3c9f2af814c84582fdd1649e49ec4f68572c5a..b061a43bf32824cb214e9e3a29a974341de443d4:/include/secure/_stdio.h

diff --git a/include/secure/_stdio.h b/include/secure/_stdio.h
index 49caf72..c4dc7b2 100644
--- a/include/secure/_stdio.h
+++ b/include/secure/_stdio.h
@@ -32,42 +32,55 @@
 
 #if _USE_FORTIFY_LEVEL > 0
 
-#undef sprintf
-#undef vsprintf
-
-#if __DARWIN_C_LEVEL >= 200112L
-#undef snprintf
-#undef vsnprintf
+#ifndef __has_builtin
+#define _undef__has_builtin
+#define __has_builtin(x) 0
 #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, ...);
 
+#undef sprintf
 #define sprintf(str, ...) \
   __builtin___sprintf_chk (str, 0, __darwin_obsz(str), __VA_ARGS__)
+#endif
 
+#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, ...);
 
-#if __DARWIN_C_LEVEL >= 200112L
+#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);
 
+#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);
 
+#undef vsnprintf
 #define vsnprintf(str, len, format, ap) \
   __builtin___vsnprintf_chk (str, len, 0, __darwin_obsz(str), format, ap)
 #endif
 
-#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_ */