Function fstatat

localtime.c:295–296

# define AT_FDCWD (-1) /* any negative value will do */
static int openat(int dd, char const *path, int oflag) { unreachable (); }
static int fstatat(int dd, char const *path, struct stat *st, int flags)
{ unreachable(); }
#endif

/* Port to platforms that lack some O_* flags.  Unless otherwise