}
#else
-static bool dirent_inode_sort_may_be_useful (int dir_fd) { return true; }
-static bool leaf_optimization_applies (int dir_fd) { return false; }
+static bool
+dirent_inode_sort_may_be_useful (int dir_fd ATTRIBUTE_UNUSED) { return true; }
+static bool
+leaf_optimization_applies (int dir_fd ATTRIBUTE_UNUSED) { return false; }
#endif
#if GNULIB_FTS