diff --git a/src/msgpack/object.hpp b/src/msgpack/object.hpp
index 76fe4cae..8c160eaf 100644
--- a/src/msgpack/object.hpp
+++ b/src/msgpack/object.hpp
@@ -234,6 +234,59 @@ void operator<< (object::with_zone& o, const T& v)
 	v.msgpack_object(static_cast<object*>(&o), o.zone);
 }
 
+template <>
+inline void operator<< (object::with_zone& o, const object& v)
+{
+	o.type = v.type;
+
+	switch(v.type) {
+	case type::NIL:
+	case type::BOOLEAN:
+	case type::POSITIVE_INTEGER:
+	case type::NEGATIVE_INTEGER:
+	case type::DOUBLE:
+		::memcpy(&o.via, &v.via, sizeof(v.via));
+		return;
+
+	case type::RAW:
+		o.via.raw.ptr = static_cast<const char*>(o.zone->malloc(v.via.raw.size));
+		o.via.raw.size = v.via.raw.size;
+		::memcpy(const_cast<char*>(o.via.raw.ptr), v.via.raw.ptr, v.via.raw.size);
+		return;
+
+	case type::ARRAY:
+		o.via.array.ptr = static_cast<object*>(o.zone->malloc(sizeof(object) * v.via.array.size));
+		o.via.array.size = v.via.array.size;
+		for(object* po(o.via.array.ptr), * pv(v.via.array.ptr),
+				* const pvend(v.via.array.ptr + v.via.array.size);
+				pv < pvend; ++po, ++pv) {
+			new (po) object(*pv, o.zone);
+		}
+		return;
+
+	case type::MAP:
+		o.via.map.ptr = static_cast<object_kv*>(o.zone->malloc(sizeof(object_kv) * v.via.map.size));
+		o.via.map.size = v.via.map.size;
+		for(object_kv* po(o.via.map.ptr), * pv(v.via.map.ptr),
+				* const pvend(v.via.map.ptr + v.via.map.size);
+				pv < pvend; ++po, ++pv) {
+			object_kv* kv = new (po) object_kv;
+			new (&kv->key) object(pv->key, o.zone);
+			new (&kv->val) object(pv->val, o.zone);
+		}
+		return;
+
+	default:
+		throw type_error();
+	}
+}
+
+template <>
+inline void operator<< (object::with_zone& o, const object::with_zone& v)
+{
+	return o << static_cast<object>(v);
+}
+
 
 inline bool operator==(const object x, const object y)
 {
@@ -412,6 +465,12 @@ packer<Stream>& operator<< (packer<Stream>& o, const object& v)
 	}
 }
 
+template <typename Stream>
+packer<Stream>& operator<< (packer<Stream>& o, const object::with_zone& v)
+{
+	return o << static_cast<object>(v);
+}
+
 
 }  // namespace msgpack
 
diff --git a/test/object.cc b/test/object.cc
index 5390c4ae..5d187224 100644
--- a/test/object.cc
+++ b/test/object.cc
@@ -1,22 +1,27 @@
 #include <msgpack.hpp>
+#include <msgpack/type.hpp>
+#include <vector>
+#include <map>
 #include <gtest/gtest.h>
 
 struct myclass {
 	myclass() : num(0), str("default") { }
 
-	myclass(int num, const std::string& str) :
-		num(0), str("default") { }
+	myclass(int n, const std::string& s) :
+		num(n), str(s) { }
 
 	~myclass() { }
 
 	int num;
 	std::string str;
+	std::vector<double> vec;
+	std::map<std::string, std::string> map;
 
-	MSGPACK_DEFINE(num, str);
+	MSGPACK_DEFINE(num, str, vec, map);
 
 	bool operator==(const myclass& o) const
 	{
-		return num == o.num && str == o.str;
+		return num == o.num && str == o.str && vec == o.vec && map == o.map;
 	}
 };
 
@@ -28,7 +33,7 @@ std::ostream& operator<<(std::ostream& o, const myclass& m)
 
 TEST(object, convert)
 {
-	myclass m1;
+	myclass m1(1, "custom");
 
 	msgpack::sbuffer sbuf;
 	msgpack::pack(sbuf, m1);
@@ -49,7 +54,7 @@ TEST(object, convert)
 
 TEST(object, as)
 {
-	myclass m1;
+	myclass m1(1, "custom");
 
 	msgpack::sbuffer sbuf;
 	msgpack::pack(sbuf, m1);
@@ -65,6 +70,37 @@ TEST(object, as)
 }
 
 
+TEST(object, cross_zone_copy)
+{
+	myclass m1(1, "custom");
+	m1.vec.push_back(1.0);
+	m1.vec.push_back(0.1);
+	m1.map["one"] = "two";
+
+	msgpack::zone z1;
+	msgpack::object::with_zone obj1(&z1);
+
+	{
+		msgpack::zone z2;
+		msgpack::object::with_zone obj2(&z2);
+		obj2 << m1;
+
+		obj1 << obj2;
+
+		EXPECT_EQ(obj1.via.array.ptr[2].via.array.ptr[0].via.dec, 1.0);
+		EXPECT_EQ(obj1.via.array.ptr[3].via.map.ptr[0].val.via.raw.ptr[0], 't');
+		EXPECT_NE(
+			obj1.via.array.ptr[2].via.array.ptr,
+			obj2.via.array.ptr[2].via.array.ptr);
+		EXPECT_NE(
+			obj1.via.array.ptr[3].via.map.ptr[0].val.via.raw.ptr,
+			obj2.via.array.ptr[3].via.map.ptr[0].val.via.raw.ptr);
+	}
+
+	EXPECT_EQ(m1, obj1.as<myclass>());
+}
+
+
 TEST(object, print)
 {
 	msgpack::object obj;