From cb6a0246dfa8de20f938dcd3320df54e83d1b059 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Sun, 21 Jan 2018 21:09:50 +0000
Subject: [PATCH] Test members in compile_test, rather than inheritance

Inheritance from unary_function is deprecated in recent C++. Better to
check the member types. Could probably drop test altogether.
---
 test/compile_time.hpp | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/test/compile_time.hpp b/test/compile_time.hpp
index db6bc59..d7631b8 100644
--- a/test/compile_time.hpp
+++ b/test/compile_time.hpp
@@ -5,14 +5,16 @@
 
 #include <boost/config.hpp>
 #include <boost/static_assert.hpp>
-#include <boost/type_traits/is_base_and_derived.hpp>
+#include <boost/type_traits/is_same.hpp>
 
 template <class T>
 void compile_time_tests(T*)
 {
-#if !defined(_HAS_AUTO_PTR_ETC) || _HAS_AUTO_PTR_ETC
-    BOOST_STATIC_ASSERT((boost::is_base_and_derived<
-        std::unary_function<T, std::size_t>, BOOST_HASH_TEST_NAMESPACE::hash<T> >::value));
-#endif
+    BOOST_STATIC_ASSERT((boost::is_same<T,
+        typename BOOST_HASH_TEST_NAMESPACE::hash<T>::argument_type
+    >::value));
+    BOOST_STATIC_ASSERT((boost::is_same<std::size_t,
+        typename BOOST_HASH_TEST_NAMESPACE::hash<T>::result_type
+    >::value));
 }