-static int verify_val_labs (struct variable **vars, int var_cnt);
-static void erase_labels (struct variable **vars, int var_cnt);
-static int get_label (struct variable **vars, int var_cnt);
+static int verify_val_labs (struct variable **vars, size_t var_cnt);
+static void erase_labels (struct variable **vars, size_t var_cnt);
+static int get_label (struct variable **vars, size_t var_cnt);