From 0b75a272f361c2fcbefd1f286788cccfb631c5dd Mon Sep 17 00:00:00 2001
From: Pieter Lexis <pieter.lexis@powerdns.com>
Date: Fri, 11 Aug 2017 14:14:24 +0200
Subject: [PATCH] Fix a signed/unsigned comparison warning on ARM

---
 pdns/dnsdist-tcp.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pdns/dnsdist-tcp.cc b/pdns/dnsdist-tcp.cc
index 70696d3dec..9d6c023c21 100644
--- a/pdns/dnsdist-tcp.cc
+++ b/pdns/dnsdist-tcp.cc
@@ -190,7 +190,11 @@ static bool sendResponseToClient(int fd, const char* response, uint16_t response
 static bool maxConnectionDurationReached(unsigned int maxConnectionDuration, time_t start, unsigned int& remainingTime)
 {
   if (maxConnectionDuration) {
-    time_t elapsed = time(NULL) - start;
+    time_t curtime = time(nullptr);
+    unsigned int elapsed = 0;
+    if (curtime > start) { // To prevent issues when time goes backward
+      elapsed = curtime - start;
+    }
     if (elapsed >= maxConnectionDuration) {
       return true;
     }
-- 
2.47.2