From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Fri, 7 Jun 2019 10:23:48 +0000 (+0200)
Subject: SuffixMatchTree: Fix the removal of the root
X-Git-Tag: dnsdist-1.4.0-rc1~122^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dbeebfee558896219c1a44974a66548190b7d4ee;p=thirdparty%2Fpdns.git

SuffixMatchTree: Fix the removal of the root
---

diff --git a/pdns/dnsname.hh b/pdns/dnsname.hh
index e5f6b11dbb..be58ea3c4e 100644
--- a/pdns/dnsname.hh
+++ b/pdns/dnsname.hh
@@ -299,6 +299,11 @@ struct SuffixMatchTree
    */
   void remove(std::vector<std::string> labels) const
   {
+    if (labels.empty()) { // this allows removal of the root
+      endNode = false;
+      return;
+    }
+
     SuffixMatchTree smt(*labels.rbegin());
     auto child = children.find(smt);
     if (child == children.end()) {