From 89a7e0df60c095f6bed561d8fbaf02f70985546d Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Thu, 23 Aug 2018 17:23:18 +0200
Subject: [PATCH] dnsdist: Fix a sign-comparison warning in isEDNSOptionInOpt()

---
 pdns/dnsdist-ecs.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdns/dnsdist-ecs.cc b/pdns/dnsdist-ecs.cc
index ff40bd8662..1d35a84288 100644
--- a/pdns/dnsdist-ecs.cc
+++ b/pdns/dnsdist-ecs.cc
@@ -437,7 +437,7 @@ bool isEDNSOptionInOpt(const std::string& packet, const size_t optStart, const s
   size_t p = optStart + 9;
   uint16_t rdLen = (0x100*packet.at(p) + packet.at(p+1));
   p += sizeof(rdLen);
-  if (11 + rdLen > optLen) {
+  if (rdLen > (optLen - 11)) {
     return false;
   }
 
-- 
2.47.2