-static bool aleq (char *, char *);
-static char *scanp (char *);
+static bool aleq (char *, char *) PURE;
+static char *scanp (char *) PURE;
static char *getp (char *);
static char *seekp (char *, char *, char **);
static int addfile (struct aka *, char *);
static char *getp (char *);
static char *seekp (char *, char *, char **);
static int addfile (struct aka *, char *);