From 030a97d44c3a36fd62efcb524a974bdc1b8bb48c Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Fri, 30 Sep 2016 12:58:01 +0000
Subject: [PATCH] fix #4383

---
 src/pt/gnunet-daemon-pt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/pt/gnunet-daemon-pt.c b/src/pt/gnunet-daemon-pt.c
index 443ff8ae6..06ef88832 100644
--- a/src/pt/gnunet-daemon-pt.c
+++ b/src/pt/gnunet-daemon-pt.c
@@ -342,6 +342,12 @@ try_open_exit ()
   for (pos = exit_head; NULL != pos; pos = pos->next)
     if (NULL == pos->cadet_channel)
       candidate_count++;
+  if (0 == candidate_count)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                "No DNS exits available yet.\n");
+    return;
+  }
   candidate_selected = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
 						 candidate_count);
   candidate_count = 0;
-- 
2.25.1