From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Mon, 16 Jan 2017 16:53:06 +0000 (+0100)
Subject: Make sure `labelsToAdd` is not empty in `getZoneCuts()`
X-Git-Tag: rec-4.1.0-alpha1~306^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2f91e7051975a411445ebd54a2a124c78a7d8ff;p=thirdparty%2Fpdns.git

Make sure `labelsToAdd` is not empty in `getZoneCuts()`
---

diff --git a/pdns/validate.cc b/pdns/validate.cc
index ace1c72f56..e6c6dbe2df 100644
--- a/pdns/validate.cc
+++ b/pdns/validate.cc
@@ -124,9 +124,12 @@ vector<DNSName> getZoneCuts(const DNSName& begin, const DNSName& end, DNSRecordO
   // The shortest name is assumed to a zone cut
   ret.push_back(qname);
   while(qname != begin) {
+    bool foundCut = false;
+    if (labelsToAdd.empty())
+      break;
+
     qname.prependRawLabel(labelsToAdd.back());
     labelsToAdd.pop_back();
-    bool foundCut = false;
     auto records = dro.get(qname, (uint16_t)QType::NS);
     for (const auto record : records) {
       if(record.d_name != qname || record.d_type != QType::NS)