From be74716251a651c71dd6ef78ff90ff513091daa0 Mon Sep 17 00:00:00 2001
From: Antony Polukhin <antoshkka@gmail.com>
Date: Thu, 18 May 2017 22:50:25 +0300
Subject: [PATCH] Use native hash_code() when possible on GCC-like compilers

---
 include/boost/type_index/stl_type_index.hpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/boost/type_index/stl_type_index.hpp b/include/boost/type_index/stl_type_index.hpp
index 2b06368..dcc532d 100644
--- a/include/boost/type_index/stl_type_index.hpp
+++ b/include/boost/type_index/stl_type_index.hpp
@@ -40,7 +40,9 @@
 #include <boost/mpl/if.hpp>
 #include <boost/mpl/or.hpp>
 
-#if !((defined(_MSC_VER) && _MSC_VER > 1600) || (__GNUC__ == 4 && __GNUC_MINOR__ > 5 && defined(__GXX_EXPERIMENTAL_CXX0X__)))
+#if !((defined(_MSC_VER) && _MSC_VER > 1600) \
+    || (defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ > 5 && defined(__GXX_EXPERIMENTAL_CXX0X__)) \
+    || (defined(__GNUC__) && __GNUC__ > 4 && __cplusplus >= 201103 ))
 #   include <boost/functional/hash.hpp>
 #endif
 
@@ -178,7 +180,9 @@ inline std::string stl_type_index::pretty_name() const {
 
 
 inline std::size_t stl_type_index::hash_code() const BOOST_NOEXCEPT {
-#if (defined(_MSC_VER) && _MSC_VER > 1600) || (__GNUC__ == 4 && __GNUC_MINOR__ > 5 && defined(__GXX_EXPERIMENTAL_CXX0X__))
+#if (defined(_MSC_VER) && _MSC_VER > 1600) \
+    || (defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ > 5 && defined(__GXX_EXPERIMENTAL_CXX0X__)) \
+    || (defined(__GNUC__) && __GNUC__ > 4 && __cplusplus >= 201103)
     return data_->hash_code();
 #else
     return boost::hash_range(raw_name(), raw_name() + std::strlen(raw_name()));