From ff445c0ecedad0540be832102165ff9cc28ab53f Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@pdimov.com>
Date: Sun, 6 Nov 2016 14:38:13 +0200
Subject: [PATCH] Remove std::binary_function use, it has been removed in C++17

---
 base_from_member_test.cpp                  |  1 -
 include/boost/utility/compare_pointees.hpp | 12 ++++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/base_from_member_test.cpp b/base_from_member_test.cpp
index 2598df5..815cc31 100644
--- a/base_from_member_test.cpp
+++ b/base_from_member_test.cpp
@@ -46,7 +46,6 @@ template < typename T >
 
 // A custom comparison type is needed
 struct object_id_compare
-    : std::binary_function<object_id, object_id, bool>
 {
     bool  operator ()( object_id const &a, object_id const &b ) const;
 
diff --git a/include/boost/utility/compare_pointees.hpp b/include/boost/utility/compare_pointees.hpp
index 7e2515c..5ab21cd 100644
--- a/include/boost/utility/compare_pointees.hpp
+++ b/include/boost/utility/compare_pointees.hpp
@@ -33,8 +33,12 @@ bool equal_pointees ( OptionalPointee const& x, OptionalPointee const& y )
 }
 
 template<class OptionalPointee>
-struct equal_pointees_t : std::binary_function<OptionalPointee,OptionalPointee,bool>
+struct equal_pointees_t
 {
+  typedef bool result_type;
+  typedef OptionalPointee first_argument_type;
+  typedef OptionalPointee second_argument_type;
+
   bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const
     { return equal_pointees(x,y) ; }
 } ;
@@ -56,8 +60,12 @@ bool less_pointees ( OptionalPointee const& x, OptionalPointee const& y )
 }
 
 template<class OptionalPointee>
-struct less_pointees_t : std::binary_function<OptionalPointee,OptionalPointee,bool>
+struct less_pointees_t
 {
+  typedef bool result_type;
+  typedef OptionalPointee first_argument_type;
+  typedef OptionalPointee second_argument_type;
+
   bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const
     { return less_pointees(x,y) ; }
 } ;