From 635220734df1e3520fa81dff8be5ad6326ee8d64 Mon Sep 17 00:00:00 2001
From: trinity-1686a <trinity@deuxfleurs.fr>
Date: Thu, 16 Nov 2023 19:13:28 +0100
Subject: [PATCH] don't warn for empty RecommendedServerVersion

---
 src/feature/dirauth/dirauth_config.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/feature/dirauth/dirauth_config.c b/src/feature/dirauth/dirauth_config.c
index 862ea9dafe..9378b0ffe6 100644
--- a/src/feature/dirauth/dirauth_config.c
+++ b/src/feature/dirauth/dirauth_config.c
@@ -471,7 +471,7 @@ dirauth_options_validate(const void *arg, char **msg)
   smartlist_split_string(version_sl, recommended_versions, ",",
       SPLIT_SKIP_SPACE, 0);
   SMARTLIST_FOREACH_BEGIN(version_sl, const char *, version) {
-    if (tor_version_parse(version,
+    if (version[0] != '\0' && tor_version_parse(version,
           &recommended_version) != 0) {
       COMPLAIN("Found unparseable version in RecommendedServerVersions");
       continue;