From d4a4a5b6ad6c69c28666731beddc7d8aa480b334 Mon Sep 17 00:00:00 2001
From: Andrzej Krzemienski <akrzemi1@gmail.com>
Date: Thu, 16 Jan 2020 22:31:23 +0100
Subject: [PATCH] fixed C++98-incompatible unit test

---
 test/optional_test_path_assignment.cpp | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/test/optional_test_path_assignment.cpp b/test/optional_test_path_assignment.cpp
index 6da6718..f0c214a 100644
--- a/test/optional_test_path_assignment.cpp
+++ b/test/optional_test_path_assignment.cpp
@@ -20,7 +20,7 @@ struct void_t
 {
   typedef void type;
 };
- 
+
 
 template <typename T, typename = void>
 struct trait
@@ -29,7 +29,7 @@ struct trait
 
 // the following trait emulates properties std::iterator_traits
 template <typename T>
-struct trait<T, BOOST_DEDUCED_TYPENAME void_t<BOOST_DEDUCED_TYPENAME T::value_type, 
+struct trait<T, BOOST_DEDUCED_TYPENAME void_t<BOOST_DEDUCED_TYPENAME T::value_type,
                                               BOOST_DEDUCED_TYPENAME boost::enable_if<boost::is_constructible<T, T&> >::type
                                              >::type>
 {
@@ -39,13 +39,20 @@ struct trait<T, BOOST_DEDUCED_TYPENAME void_t<BOOST_DEDUCED_TYPENAME T::value_ty
 // This class emulates the properties of std::filesystem::path
 struct Path
 {
+
+#if __cplusplus >= 201103
     template <typename T, typename = BOOST_DEDUCED_TYPENAME trait<T>::value_type>
         Path(T const&);
+#else
+  template <typename T>
+    Path(T const&, BOOST_DEDUCED_TYPENAME trait<T>::value_type* = 0);
+#endif
+
 };
 
 
 int main()
-{ 
+{
 #ifndef BOOST_OPTIONAL_DETAIL_NO_IS_CONSTRUCTIBLE_TRAIT
 #ifndef BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS