From b2f5893669a8897e8b45e83ff606e49029f13c4d Mon Sep 17 00:00:00 2001
From: Takatoshi Kondo <redboltz@gmail.com>
Date: Sun, 10 Aug 2014 22:04:31 +0900
Subject: [PATCH] Added reference to return value.

---
 include/msgpack/adaptor/map.hpp               | 5 ++---
 include/msgpack/adaptor/tr1/unordered_map.hpp | 5 ++---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/include/msgpack/adaptor/map.hpp b/include/msgpack/adaptor/map.hpp
index 5cbb6ede..464af7e4 100644
--- a/include/msgpack/adaptor/map.hpp
+++ b/include/msgpack/adaptor/map.hpp
@@ -94,7 +94,7 @@ inline void operator<< (object::with_zone& o, const type::assoc_vector<K,V>& v)
 
 
 template <typename K, typename V>
-inline std::map<K, V> operator>> (object const& o, std::map<K, V>& v)
+inline std::map<K, V>& operator>> (object const& o, std::map<K, V>& v)
 {
     if(o.type != type::MAP) { throw type_error(); }
     object_kv* p(o.via.map.ptr);
@@ -150,7 +150,7 @@ inline void operator<< (object::with_zone& o, const std::map<K,V>& v)
 
 
 template <typename K, typename V>
-inline std::multimap<K, V> operator>> (object const& o, std::multimap<K, V>& v)
+inline std::multimap<K, V>& operator>> (object const& o, std::multimap<K, V>& v)
 {
     if(o.type != type::MAP) { throw type_error(); }
     object_kv* p(o.via.map.ptr);
@@ -202,4 +202,3 @@ inline void operator<< (object::with_zone& o, const std::multimap<K,V>& v)
 }  // namespace msgpack
 
 #endif /* msgpack/type/map.hpp */
-
diff --git a/include/msgpack/adaptor/tr1/unordered_map.hpp b/include/msgpack/adaptor/tr1/unordered_map.hpp
index 7d8a18e8..b18af70f 100644
--- a/include/msgpack/adaptor/tr1/unordered_map.hpp
+++ b/include/msgpack/adaptor/tr1/unordered_map.hpp
@@ -44,7 +44,7 @@ namespace msgpack {
 
 
 template <typename K, typename V>
-inline MSGPACK_STD_TR1::unordered_map<K, V> operator>> (object o, MSGPACK_STD_TR1::unordered_map<K, V>& v)
+inline MSGPACK_STD_TR1::unordered_map<K, V>& operator>> (object o, MSGPACK_STD_TR1::unordered_map<K, V>& v)
 {
     if(o.type != type::MAP) { throw type_error(); }
     object_kv* p(o.via.map.ptr);
@@ -93,7 +93,7 @@ inline void operator<< (object::with_zone& o, const MSGPACK_STD_TR1::unordered_m
 
 
 template <typename K, typename V>
-inline MSGPACK_STD_TR1::unordered_multimap<K, V> operator>> (object o, MSGPACK_STD_TR1::unordered_multimap<K, V>& v)
+inline MSGPACK_STD_TR1::unordered_multimap<K, V>& operator>> (object o, MSGPACK_STD_TR1::unordered_multimap<K, V>& v)
 {
     if(o.type != type::MAP) { throw type_error(); }
     object_kv* p(o.via.map.ptr);
@@ -147,4 +147,3 @@ inline void operator<< (object::with_zone& o, const MSGPACK_STD_TR1::unordered_m
 #undef MSGPACK_STD_TR1
 
 #endif /* msgpack/type/map.hpp */
-