From 33d7985c8b63d90bba4f7a8de8ee41f7269cbd48 Mon Sep 17 00:00:00 2001
From: Antony Polukhin <antoshkka@gmail.com>
Date: Tue, 3 Jul 2012 20:58:03 +0400
Subject: [PATCH] Optimized hash_code()

---
 boost/type_index.hpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/boost/type_index.hpp b/boost/type_index.hpp
index 3e07992..eee44b4 100644
--- a/boost/type_index.hpp
+++ b/boost/type_index.hpp
@@ -393,8 +393,12 @@ public:
 #endif // BOOST_TYPE_INDEX_DOXYGEN_INVOKED
 
     /// Function for getting hash value
-    std::size_t hash_code() const {
+    std::size_t hash_code() const BOOST_CLASSINFO_COMPARISON_NOEXCEPT {
+#if _MSC_VER >= 1600 || (__GNUC__ == 4 && __GNUC_MINOR__ > 5 && defined(__GXX_EXPERIMENTAL_CXX0X__))
+        return pinfo_->hash_code();
+#else 
         return boost::hash_range(name(), name() + std::strlen(name()));
+#endif 
     }
 };