#include "../../include/string.h"
-void *__memrchr(const void *, int, size_t);
-char *__stpcpy(char *, const char *);
-char *__stpncpy(char *, const char *, size_t);
-char *__strchrnul(const char *, int);
+hidden void *__memrchr(const void *, int, size_t);
+hidden char *__stpcpy(char *, const char *);
+hidden char *__stpncpy(char *, const char *, size_t);
+hidden char *__strchrnul(const char *, int);
#endif