--- Libc/Libc-1725.40.4/include/secure/_common.h
+++ Libc/Libc-1669.0.4/include/secure/_common.h
@@ -39,7 +39,5 @@
 
 #define __darwin_obsz0(object) __builtin_object_size (object, 0)
 #define __darwin_obsz(object) __builtin_object_size (object, _USE_FORTIFY_LEVEL > 1 ? 1 : 0)
-#define __darwin_pass_obsz0 __attribute__((__pass_object_size__(0)))
-#define __darwin_pass_obsz __attribute__((__pass_object_size__(_USE_FORTIFY_LEVEL > 1 ? 1 : 0)))
 
 #endif