From 6dc3d9c540f1b50a19ed66e5c3776bba7c300a97 Mon Sep 17 00:00:00 2001
From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Tue, 25 Jan 2022 16:51:46 +0100
Subject: [PATCH] Stop using the now deprecated and useless
 std::binary_function

It is no longer needed since the types can now be automatically
deduced, has been deprecated in C++11 and removed in C++17.

(cherry picked from commit 7587bcbea8a9cb3058cb2e6d7f6a2597494b6713)
---
 pdns/dnsname.hh     | 2 +-
 pdns/dnssecinfra.hh | 2 +-
 pdns/iputils.hh     | 4 ++--
 pdns/misc.hh        | 4 ++--
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/pdns/dnsname.hh b/pdns/dnsname.hh
index 76981f513a..868eb963fd 100644
--- a/pdns/dnsname.hh
+++ b/pdns/dnsname.hh
@@ -237,7 +237,7 @@ inline bool DNSName::canonCompare(const DNSName& rhs) const
 }
 
 
-struct CanonDNSNameCompare: public std::binary_function<DNSName, DNSName, bool>
+struct CanonDNSNameCompare
 {
   bool operator()(const DNSName&a, const DNSName& b) const
   {
diff --git a/pdns/dnssecinfra.hh b/pdns/dnssecinfra.hh
index 00f3befc06..eccd7c5b20 100644
--- a/pdns/dnssecinfra.hh
+++ b/pdns/dnssecinfra.hh
@@ -137,7 +137,7 @@ private:
 
 
 
-struct CanonicalCompare: public std::binary_function<string, string, bool>  
+struct CanonicalCompare
 {
   bool operator()(const std::string& a, const std::string& b) {
     std::vector<std::string> avect, bvect;
diff --git a/pdns/iputils.hh b/pdns/iputils.hh
index 23b200b1a5..cca7714937 100644
--- a/pdns/iputils.hh
+++ b/pdns/iputils.hh
@@ -143,7 +143,7 @@ union ComboAddress {
     }
   };
 
-  struct addressOnlyLessThan: public std::binary_function<ComboAddress, ComboAddress, bool>
+  struct addressOnlyLessThan
   {
     bool operator()(const ComboAddress& a, const ComboAddress& b) const
     {
@@ -158,7 +158,7 @@ union ComboAddress {
     }
   };
 
-  struct addressOnlyEqual: public std::binary_function<ComboAddress, ComboAddress, bool>
+  struct addressOnlyEqual
   {
     bool operator()(const ComboAddress& a, const ComboAddress& b) const
     {
diff --git a/pdns/misc.hh b/pdns/misc.hh
index f08be7591c..3c8c5dbd6a 100644
--- a/pdns/misc.hh
+++ b/pdns/misc.hh
@@ -381,7 +381,7 @@ typedef unsigned long AtomicCounterInner;
 typedef std::atomic<AtomicCounterInner> AtomicCounter ;
 
 // FIXME400 this should probably go? 
-struct CIStringCompare: public std::binary_function<string, string, bool>
+struct CIStringCompare
 {
   bool operator()(const string& a, const string& b) const
   {
@@ -405,7 +405,7 @@ struct CIStringComparePOSIX
    }
 };
 
-struct CIStringPairCompare: public std::binary_function<pair<string, uint16_t>, pair<string,uint16_t>, bool>
+struct CIStringPairCompare
 {
   bool operator()(const pair<string, uint16_t>& a, const pair<string, uint16_t>& b) const
   {
-- 
2.47.2