From b04ef34a69bb4d523e6141ed3cf4365a8130d945 Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Fri, 25 Nov 2022 18:42:53 +0100
Subject: [PATCH] rec-4.7.x: Stop using deprecated std::binary_function

---
 pdns/zonemd.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdns/zonemd.hh b/pdns/zonemd.hh
index 63551fec3e..acb402d250 100644
--- a/pdns/zonemd.hh
+++ b/pdns/zonemd.hh
@@ -107,7 +107,7 @@ private:
   typedef std::pair<DNSName, QType> RRSetKey_t;
   typedef std::vector<std::shared_ptr<DNSRecordContent>> RRVector_t;
 
-  struct CanonRRSetKeyCompare : public std::binary_function<RRSetKey_t, RRSetKey_t, bool>
+  struct CanonRRSetKeyCompare
   {
     bool operator()(const RRSetKey_t& a, const RRSetKey_t& b) const
     {
-- 
2.47.2