From 9b5bbec3c26d4e794b6e1c3a69e70d4ccd9d76d0 Mon Sep 17 00:00:00 2001
From: bert hubert <bert.hubert@netherlabs.nl>
Date: Fri, 6 Nov 2015 22:46:54 +0100
Subject: [PATCH] some further empty dnsname checks, although I'm not sure this
 should be necessary

---
 modules/bindbackend/bindbackend2.cc | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/modules/bindbackend/bindbackend2.cc b/modules/bindbackend/bindbackend2.cc
index e35896aed..a72067147 100644
--- a/modules/bindbackend/bindbackend2.cc
+++ b/modules/bindbackend/bindbackend2.cc
@@ -889,10 +889,17 @@ bool Bind2Backend::findBeforeAndAfterUnhashed(BB2DomainInfo& bbd, const DNSName&
     while(iter == records->end() || (qname.canonCompare(iter->qname)) || (!(iter->auth) && (!(iter->qtype == QType::NS))) || (!(iter->qtype)))
       iter--;
 
-    before=iter->qname.labelReverse().toString(" ",false);
+    if(iter->qname.empty())
+      before.clear();
+    else {
+      before=iter->qname.labelReverse().toString(" ",false);
+    }
   }
   else {
-    before=qname.labelReverse().toString(" ",false);
+    if(qname.empty())
+      before.clear();
+    else
+      before=qname.labelReverse().toString(" ",false);
   }
 
   //cerr<<"Now after"<<endl;
-- 
2.40.0