From eb910ee9163935af3824bec870cebbd38fbc172d Mon Sep 17 00:00:00 2001
From: Tanki Zhang <tanki_jong@hotmail.com>
Date: Wed, 4 Apr 2018 19:59:34 -0500
Subject: [PATCH] This patch fixed the compiled error which prevent user from
 deriving from std::iterator when using C++17 compiler.

---
 include/yaml-cpp/node/detail/iterator.h | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/include/yaml-cpp/node/detail/iterator.h b/include/yaml-cpp/node/detail/iterator.h
index deec8fb..dcde76d 100644
--- a/include/yaml-cpp/node/detail/iterator.h
+++ b/include/yaml-cpp/node/detail/iterator.h
@@ -19,8 +19,7 @@ namespace detail {
 struct iterator_value;
 
 template <typename V>
-class iterator_base : public std::iterator<std::forward_iterator_tag, V,
-                                           std::ptrdiff_t, V*, V> {
+class iterator_base {
 
  private:
   template <typename>
@@ -37,8 +36,11 @@ class iterator_base : public std::iterator<std::forward_iterator_tag, V,
   };
 
  public:
-  typedef typename iterator_base::value_type value_type;
-
+  using iterator_category = std::forward_iterator_tag;
+  using value_type = V;
+  using difference_type = std::ptrdiff_t;
+  using pointer = V * ;
+  using reference = V;
  public:
   iterator_base() : m_iterator(), m_pMemory() {}
   explicit iterator_base(base_type rhs, shared_memory_holder pMemory)