--- Libc/Libc-583/include/readpassphrase.h
+++ Libc/Libc-997.90.3/include/readpassphrase.h
@@ -39,11 +39,7 @@
 #define RPP_SEVENBIT    0x10		/* Strip the high bit from input. */
 
 #include <_types.h>
-
-#ifndef _SIZE_T
-#define _SIZE_T
-typedef	__darwin_size_t	size_t;
-#endif
+#include <sys/_types/_size_t.h>
 
 __BEGIN_DECLS
 char * readpassphrase(const char *, char *, size_t, int);