This is a backport of bed79c47f4ec0ee72b19e2b81c54131d516d07ef which accidentally only went into master
@@ -1698,6 +1698,8 @@ check_private_dir(const char *dirname, cpd_check_t check,
struct passwd *pw = NULL;
uid_t running_uid;
gid_t running_gid;
+#else
+ (void)effective_user;
#endif
tor_assert(dirname);