Include ordering results in compilation errors

[davidchappelle]

Here is a small sample program that shows how include ordering can result in a significant amount of compiler errors. Forcing a strict ordering on includes seems to be a very poor approach:

#include <msgpack_fwd.hpp>

enum class color : int 
{
    red,
    green,
    blue
};

#include <msgpack/object.hpp>
MSGPACK_ADD_ENUM(color);
//#include <msgpack/object.hpp>

#include <msgpack.hpp>

int main(int argc, char** argv)
{
    msgpack::object o(color::red);
    return 0;
}

If you compile this program you will get the following output. Swapping out the msgpack/object.hpp includes will get rid of the errors.

dchappelle@orion:build$ g++ -I ../third-party/msgpack-c/include -std=c++11 ../main.cpp -o main
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp: In instantiation of ‘msgpack::v1::object::object(const T&) [with T = color]’:
../main.cpp:18:33:   required from here
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: error: no matching function for call to ‘operator<<(msgpack::v1::object&, const color&)’
     msgpack::operator<<(*this, v);
                                 ^
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note: candidates are:
../third-party/msgpack-c/include/msgpack/object.hpp:276:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const T&)
 inline void operator<< (msgpack::object::with_zone& o, const T& v)
             ^
../third-party/msgpack-c/include/msgpack/object.hpp:276:13: note:   template argument deduction/substitution failed:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
../third-party/msgpack-c/include/msgpack/object.hpp:199:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const msgpack::v1::object&)
 inline void operator<< (msgpack::object::with_zone& o, const msgpack::object& v)
             ^
../third-party/msgpack-c/include/msgpack/object.hpp:199:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/object.hpp:269:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const msgpack::v1::object::with_zone&)
 inline void operator<< (msgpack::object::with_zone& o, const msgpack::object::with_zone& v)
             ^
../third-party/msgpack-c/include/msgpack/object.hpp:269:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/object.hpp:564:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const msgpack::v1::object&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const msgpack::object& v)
                                 ^
../third-party/msgpack-c/include/msgpack/object.hpp:564:33: note:   template argument deduction/substitution failed:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
../third-party/msgpack-c/include/msgpack/object.hpp:631:26: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const msgpack::v1::object::with_zone&)
 msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const msgpack::object::with_zone& v)
                          ^
../third-party/msgpack-c/include/msgpack/object.hpp:631:26: note:   template argument deduction/substitution failed:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/object.hpp:23:0,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/pack.hpp:144:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const T&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const T& v)
                                 ^
../third-party/msgpack-c/include/msgpack/pack.hpp:144:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:141:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, char)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, char v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:141:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:146:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, signed char)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, signed char v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:146:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:150:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, short int)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, signed short v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:150:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:154:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, int)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, signed int v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:154:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:158:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, long int)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, signed long v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:158:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:162:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, long long int)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, signed long long v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:162:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:167:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, unsigned char)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, unsigned char v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:167:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:171:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, short unsigned int)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, unsigned short v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:171:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:175:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, unsigned int)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, unsigned int v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:175:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:179:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, long unsigned int)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, unsigned long v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:179:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:183:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, long long unsigned int)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, unsigned long long v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:183:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:23:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:5,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:187:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, char)
 inline void operator<< (msgpack::object& o, char v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:187:13: note:   no known conversion for argument 2 from ‘const color’ to ‘char’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:191:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, signed char)
 inline void operator<< (msgpack::object& o, signed char v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:191:13: note:   no known conversion for argument 2 from ‘const color’ to ‘signed char’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:203:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, short int)
 inline void operator<< (msgpack::object& o, signed short v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:203:13: note:   no known conversion for argument 2 from ‘const color’ to ‘short int’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:215:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, int)
 inline void operator<< (msgpack::object& o, signed int v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:215:13: note:   no known conversion for argument 2 from ‘const color’ to ‘int’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:227:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, long int)
 inline void operator<< (msgpack::object& o, signed long v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:227:13: note:   no known conversion for argument 2 from ‘const color’ to ‘long int’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:239:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, long long int)
 inline void operator<< (msgpack::object& o, signed long long v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:239:13: note:   no known conversion for argument 2 from ‘const color’ to ‘long long int’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:251:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, unsigned char)
 inline void operator<< (msgpack::object& o, unsigned char v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:251:13: note:   no known conversion for argument 2 from ‘const color’ to ‘unsigned char’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:254:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, short unsigned int)
 inline void operator<< (msgpack::object& o, unsigned short v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:254:13: note:   no known conversion for argument 2 from ‘const color’ to ‘short unsigned int’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:257:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, unsigned int)
 inline void operator<< (msgpack::object& o, unsigned int v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:257:13: note:   no known conversion for argument 2 from ‘const color’ to ‘unsigned int’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:260:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, long unsigned int)
 inline void operator<< (msgpack::object& o, unsigned long v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:260:13: note:   no known conversion for argument 2 from ‘const color’ to ‘long unsigned int’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:263:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, long long unsigned int)
 inline void operator<< (msgpack::object& o, unsigned long long v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:263:13: note:   no known conversion for argument 2 from ‘const color’ to ‘long long unsigned int’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:268:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, char)
 inline void operator<< (msgpack::object::with_zone& o, char v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:268:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:272:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, signed char)
 inline void operator<< (msgpack::object::with_zone& o, signed char v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:272:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:275:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, short int)
 inline void operator<< (msgpack::object::with_zone& o, signed short v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:275:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:278:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, int)
 inline void operator<< (msgpack::object::with_zone& o, signed int v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:278:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:281:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, long int)
 inline void operator<< (msgpack::object::with_zone& o, signed long v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:281:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:284:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const long long int&)
 inline void operator<< (msgpack::object::with_zone& o, const signed long long& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:284:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:288:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, unsigned char)
 inline void operator<< (msgpack::object::with_zone& o, unsigned char v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:288:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:291:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, short unsigned int)
 inline void operator<< (msgpack::object::with_zone& o, unsigned short v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:291:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:294:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, unsigned int)
 inline void operator<< (msgpack::object::with_zone& o, unsigned int v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:294:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:297:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, long unsigned int)
 inline void operator<< (msgpack::object::with_zone& o, unsigned long v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:297:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:300:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const long long unsigned int&)
 inline void operator<< (msgpack::object::with_zone& o, const unsigned long long& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/int.hpp:300:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:2:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/bool.hpp:37:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const bool&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const bool& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/bool.hpp:37:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:2:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/bool.hpp:44:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, bool)
 inline void operator<< (msgpack::object& o, bool v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/bool.hpp:44:13: note:   no known conversion for argument 2 from ‘const color’ to ‘bool’
../third-party/msgpack-c/include/msgpack/adaptor/bool.hpp:50:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, bool)
 inline void operator<< (msgpack::object::with_zone& o, bool v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/bool.hpp:50:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:3:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:32:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const char*)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const char* v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:32:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:3:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:40:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const char*)
 inline void operator<< (msgpack::object::with_zone& o, const char* v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:40:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:50:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, const char*)
 inline void operator<< (msgpack::object& o, const char* v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:50:13: note:   no known conversion for argument 2 from ‘const color’ to ‘const char*’
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:59:24: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, char*)
 inline packer<Stream>& operator<< (packer<Stream>& o, char* v)
                        ^
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:59:24: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:3:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:64:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, char*)
 inline void operator<< (object::with_zone& o, char* v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:64:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:69:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, char*)
 inline void operator<< (object& o, char* v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/char_ptr.hpp:69:13: note:   no known conversion for argument 2 from ‘const color’ to ‘char*’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:4:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/deque.hpp:46:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::deque<T>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::deque<T>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/deque.hpp:46:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:4:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/deque.hpp:58:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::deque<T>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::deque<T>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/deque.hpp:58:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:87:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const fix_int8&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::fix_int8& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:87:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:91:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const fix_int16&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::fix_int16& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:91:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:95:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const fix_int32&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::fix_int32& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:95:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:99:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const fix_int64&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::fix_int64& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:99:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:104:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const fix_uint8&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::fix_uint8& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:104:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:108:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const fix_uint16&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::fix_uint16& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:108:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:112:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const fix_uint32&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::fix_uint32& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:112:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:116:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const fix_uint64&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::fix_uint64& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:116:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:5:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:120:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::fix_int8)
 inline void operator<< (msgpack::object& o, type::fix_int8 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:120:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::fix_int8 {aka msgpack::v1::type::fix_int<signed char>}’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:132:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::fix_int16)
 inline void operator<< (msgpack::object& o, type::fix_int16 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:132:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::fix_int16 {aka msgpack::v1::type::fix_int<short int>}’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:144:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::fix_int32)
 inline void operator<< (msgpack::object& o, type::fix_int32 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:144:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::fix_int32 {aka msgpack::v1::type::fix_int<int>}’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:156:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::fix_int64)
 inline void operator<< (msgpack::object& o, type::fix_int64 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:156:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::fix_int64 {aka msgpack::v1::type::fix_int<long int>}’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:169:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::fix_uint8)
 inline void operator<< (msgpack::object& o, type::fix_uint8 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:169:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::fix_uint8 {aka msgpack::v1::type::fix_int<unsigned char>}’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:172:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::fix_uint16)
 inline void operator<< (msgpack::object& o, type::fix_uint16 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:172:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::fix_uint16 {aka msgpack::v1::type::fix_int<short unsigned int>}’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:175:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::fix_uint32)
 inline void operator<< (msgpack::object& o, type::fix_uint32 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:175:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::fix_uint32 {aka msgpack::v1::type::fix_int<unsigned int>}’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:178:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::fix_uint64)
 inline void operator<< (msgpack::object& o, type::fix_uint64 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:178:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::fix_uint64 {aka msgpack::v1::type::fix_int<long unsigned int>}’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:182:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::fix_int8)
 inline void operator<< (msgpack::object::with_zone& o, type::fix_int8 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:182:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:185:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::fix_int16)
 inline void operator<< (msgpack::object::with_zone& o, type::fix_int16 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:185:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:188:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::fix_int32)
 inline void operator<< (msgpack::object::with_zone& o, type::fix_int32 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:188:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:191:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::fix_int64)
 inline void operator<< (msgpack::object::with_zone& o, type::fix_int64 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:191:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:195:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::fix_uint8)
 inline void operator<< (msgpack::object::with_zone& o, type::fix_uint8 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:195:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:198:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::fix_uint16)
 inline void operator<< (msgpack::object::with_zone& o, type::fix_uint16 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:198:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:201:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::fix_uint32)
 inline void operator<< (msgpack::object::with_zone& o, type::fix_uint32 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:201:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:204:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::fix_uint64)
 inline void operator<< (msgpack::object::with_zone& o, type::fix_uint64 v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/fixint.hpp:204:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:6:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:50:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const float&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const float& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:50:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:6:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:75:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const double&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const double& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:75:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:6:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:82:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, float)
 inline void operator<< (msgpack::object& o, float v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:82:13: note:   no known conversion for argument 2 from ‘const color’ to ‘float’
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:88:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, double)
 inline void operator<< (msgpack::object& o, double v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:88:13: note:   no known conversion for argument 2 from ‘const color’ to ‘double’
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:94:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, float)
 inline void operator<< (msgpack::object::with_zone& o, float v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:94:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:97:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, double)
 inline void operator<< (msgpack::object::with_zone& o, double v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/float.hpp:97:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:8:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/list.hpp:46:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::list<T>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::list<T>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/list.hpp:46:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:8:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/list.hpp:58:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::list<T>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::list<T>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/list.hpp:58:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:9:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:66:33: note: template<class Stream, class K, class V> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const msgpack::v1::type::assoc_vector<K, V>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::assoc_vector<K,V>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:66:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:9:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:79:13: note: template<class K, class V> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const msgpack::v1::type::assoc_vector<K, V>&)
 inline void operator<< (msgpack::object::with_zone& o, const type::assoc_vector<K,V>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:79:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:9:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:126:33: note: template<class Stream, class K, class V> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::map<K, V>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::map<K,V>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:126:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:9:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:139:13: note: template<class K, class V> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::map<K, V>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::map<K,V>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:139:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:9:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:180:33: note: template<class Stream, class K, class V> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::multimap<K, V>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::multimap<K,V>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:180:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:9:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:193:13: note: template<class K, class V> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::multimap<K, V>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::multimap<K,V>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/map.hpp:193:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/msgpack_tuple.hpp:26:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:18,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/detail/cpp11_msgpack_tuple.hpp:123:32: note: template<class Stream, class ... Args> const msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const msgpack::v1::type::tuple<Args ...>&)
 const msgpack::packer<Stream>& operator<< (
                                ^
../third-party/msgpack-c/include/msgpack/adaptor/detail/cpp11_msgpack_tuple.hpp:123:32: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/adaptor/msgpack_tuple.hpp:26:0,
                 from ../third-party/msgpack-c/include/msgpack/type.hpp:18,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/detail/cpp11_msgpack_tuple.hpp:199:13: note: template<class ... Args> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const msgpack::v1::type::tuple<Args ...>&)
 inline void operator<< (
             ^
../third-party/msgpack-c/include/msgpack/adaptor/detail/cpp11_msgpack_tuple.hpp:199:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:10:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/nil.hpp:42:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const msgpack::v1::type::nil&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const type::nil&)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/nil.hpp:42:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:10:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/nil.hpp:48:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, msgpack::v1::type::nil)
 inline void operator<< (msgpack::object& o, type::nil)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/nil.hpp:48:13: note:   no known conversion for argument 2 from ‘const color’ to ‘msgpack::v1::type::nil’
../third-party/msgpack-c/include/msgpack/adaptor/nil.hpp:53:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::nil)
 inline void operator<< (msgpack::object::with_zone& o, type::nil v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/nil.hpp:53:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:11:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/pair.hpp:40:33: note: template<class Stream, class T1, class T2> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::pair<_Tp1, _Tp2>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::pair<T1, T2>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/pair.hpp:40:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:11:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/pair.hpp:49:13: note: template<class T1, class T2> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::pair<_T1, _T2>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::pair<T1, T2>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/pair.hpp:49:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:12:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/raw.hpp:76:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const msgpack::v1::type::raw_ref&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const msgpack::type::raw_ref& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/raw.hpp:76:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:12:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/raw.hpp:83:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, const msgpack::v1::type::raw_ref&)
 inline void operator<< (msgpack::object& o, const msgpack::type::raw_ref& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/raw.hpp:83:13: note:   no known conversion for argument 2 from ‘const color’ to ‘const msgpack::v1::type::raw_ref&’
../third-party/msgpack-c/include/msgpack/adaptor/raw.hpp:90:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const msgpack::v1::type::raw_ref&)
 inline void operator<< (msgpack::object::with_zone& o, const msgpack::type::raw_ref& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/raw.hpp:90:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:13:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/set.hpp:47:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::set<T>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::set<T>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/set.hpp:47:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:13:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/set.hpp:59:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::set<T>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::set<T>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/set.hpp:59:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:13:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/set.hpp:97:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::multiset<T>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::multiset<T>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/set.hpp:97:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:13:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/set.hpp:109:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::multiset<T>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::multiset<T>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/set.hpp:109:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:14:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/string.hpp:48:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const string&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::string& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/string.hpp:48:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:14:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/string.hpp:56:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const string&)
 inline void operator<< (msgpack::object::with_zone& o, const std::string& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/string.hpp:56:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
../third-party/msgpack-c/include/msgpack/adaptor/string.hpp:66:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, const string&)
 inline void operator<< (msgpack::object& o, const std::string& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/string.hpp:66:13: note:   no known conversion for argument 2 from ‘const color’ to ‘const string& {aka const std::basic_string<char>&}’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:15:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/vector.hpp:50:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::vector<T>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::vector<T>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/vector.hpp:50:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:15:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/vector.hpp:62:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::vector<_RealType>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::vector<T>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/vector.hpp:62:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:16:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/vector_bool.hpp:46:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::vector<bool>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::vector<bool>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/vector_bool.hpp:46:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:16:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/vector_bool.hpp:56:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::vector<bool>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::vector<bool>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/vector_bool.hpp:56:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:17:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/vector_char.hpp:50:33: note: template<class Stream> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::vector<char>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::vector<char>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/vector_char.hpp:50:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:17:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/vector_char.hpp:59:13: note: void msgpack::v1::operator<<(msgpack::v1::object&, const std::vector<char>&)
 inline void operator<< (msgpack::object& o, const std::vector<char>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/vector_char.hpp:59:13: note:   no known conversion for argument 2 from ‘const color’ to ‘const std::vector<char>&’
../third-party/msgpack-c/include/msgpack/adaptor/vector_char.hpp:67:13: note: void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::vector<char>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::vector<char>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/vector_char.hpp:67:13: note:   no known conversion for argument 1 from ‘msgpack::v1::object’ to ‘msgpack::v1::object::with_zone&’
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:28:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array.hpp:50:33: note: template<class Stream, class T, long unsigned int N> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::array<_Tp, _Nm>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::array<T, N>& v) {
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array.hpp:50:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:28:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array.hpp:58:13: note: template<class T, long unsigned int N> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::array<_Tp, _Nm>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::array<T, N>& v) {
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array.hpp:58:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:29:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array_char.hpp:51:33: note: template<class Stream, long unsigned int N> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::array<char, N>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::array<char, N>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array_char.hpp:51:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:29:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array_char.hpp:61:13: note: template<long unsigned int N> void msgpack::v1::operator<<(msgpack::v1::object&, const std::array<char, N>&)
 inline void operator<< (msgpack::object& o, const std::array<char, N>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array_char.hpp:61:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   mismatched types ‘const std::array<char, N>’ and ‘const color’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:29:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array_char.hpp:70:13: note: template<long unsigned int N> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::array<char, N>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::array<char, N>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/array_char.hpp:70:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:30:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/forward_list.hpp:46:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::forward_list<T>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::forward_list<T>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/forward_list.hpp:46:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:30:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/forward_list.hpp:55:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::forward_list<T>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::forward_list<T>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/forward_list.hpp:55:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:31:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/tuple.hpp:61:39: note: template<class Stream, class ... Args> const msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::tuple<_Elements ...>&)
 inline const msgpack::packer<Stream>& operator<< (
                                       ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/tuple.hpp:61:39: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:31:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/tuple.hpp:138:13: note: template<class ... Args> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::tuple<_Elements ...>&)
 inline void operator<< (
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/tuple.hpp:138:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:32:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_map.hpp:48:33: note: template<class Stream, class K, class V> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::unordered_map<K, V>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::unordered_map<K,V>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_map.hpp:48:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:32:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_map.hpp:61:13: note: template<class K, class V> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::unordered_map<K, V>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::unordered_map<K,V>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_map.hpp:61:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:32:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_map.hpp:102:33: note: template<class Stream, class K, class V> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::unordered_multimap<K, V>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::unordered_multimap<K,V>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_map.hpp:102:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:32:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_map.hpp:115:13: note: template<class K, class V> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::unordered_multimap<K, V>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::unordered_multimap<K,V>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_map.hpp:115:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:33:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_set.hpp:47:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::unordered_set<T>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::unordered_set<T>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_set.hpp:47:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:33:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_set.hpp:59:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::unordered_set<T>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::unordered_set<T>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_set.hpp:59:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:33:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_set.hpp:97:33: note: template<class Stream, class T> msgpack::v1::packer<Stream>& msgpack::v1::operator<<(msgpack::v1::packer<Stream>&, const std::unordered_multiset<T>&)
 inline msgpack::packer<Stream>& operator<< (msgpack::packer<Stream>& o, const std::unordered_multiset<T>& v)
                                 ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_set.hpp:97:33: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   ‘msgpack::v1::object’ is not derived from ‘msgpack::v1::packer<Stream>’
     msgpack::operator<<(*this, v);
                                 ^
In file included from ../third-party/msgpack-c/include/msgpack/type.hpp:33:0,
                 from ../third-party/msgpack-c/include/msgpack/object.hpp:710,
                 from ../main.cpp:2:
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_set.hpp:109:13: note: template<class T> void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, const std::unordered_multiset<T>&)
 inline void operator<< (msgpack::object::with_zone& o, const std::unordered_multiset<T>& v)
             ^
../third-party/msgpack-c/include/msgpack/adaptor/cpp11/unordered_set.hpp:109:13: note:   template argument deduction/substitution failed:
In file included from ../main.cpp:2:0:
../third-party/msgpack-c/include/msgpack/object.hpp:491:33: note:   cannot convert ‘*(msgpack::v1::object*)this’ (type ‘msgpack::v1::object’) to type ‘msgpack::v1::object::with_zone&’
     msgpack::operator<<(*this, v);
                                 ^

[redboltz]

Unfortunately, msgpack-c requires correct including order. It is because in order to achieve API versioning. See https://github.com/msgpack/msgpack-c/wiki/cpp_versioning and #135 https://github.com/msgpack/msgpack-c/wiki/cpp_packer#packing-enums

msgpack-c used to depends on ADL, thanks to two phase name lookup caused by ADL, the overloding functions' point of instanciation is delayed. However, ADL cannot work well with API versioning. Because API versioning requires namespace qualification.

We've made the decision that API-versioning should be added even though including order limitation is introduced.

As I wrote above, I prepared some documents on wiki and examples. But the documents wrote only about the order of msgpack_fwd.hpp and msgpack.hpp. Because many users only includes that two files. In your case, you include object.hpp directly. I think that I should write more about include files in the documentation.

[davidchappelle]

I think I have another problem with this. I have a project that includes msgpack.hpp in many different header files. The problem is that as soon as I have any inline code in my common header files that needs msgpack.hpp rather than msgpack_fwd.hpp it forces me to have to include msgpack.hpp in a header file. On a larger project where include chains are deep this becomes very difficult to manage. What is the recommended strategy for including msgpack_fwd.hpp and msgpack.hpp? Does this mean that I am now forced to not inline code in these cases?

I have another third-party header only library that depends on mspack-c. So now I am forced to include msgpack.hpp in header files. So now I have to worry about these things getting included in the right order so that one of them doesn't introduce a msgpack.hpp include too early?

[redboltz]

I understand your situation. I considered that how to solve the issue. I've sent the PR #261 to minimize dependency to object.hpp. I believe that a header only library that uses msgpack-c need to include only msgpack_fwd.hpp when the PR is applied.

Could you get the branch and test it?

After I've created the PR, I've noticed that I had ought to name as follows:

msgpack_fwd.hpp -> msgpack.hpp
msgpack.hpp -> msgpack_impl.hpp (or similar)

However, it's too late...

Could you create workaround directory and set it to earlier include search path as folows?

mkdir workaround

Place the following files in workaround directory:

workaround/msgpack.hpp
workaround/msgpack_impl.hpp

Each file has the following contents:

workaround/msgpack.hpp

#ifndef WORKAROUND_MSGPACK_HPP
#define WORKAROUND_MSGPACK_HPP
#include "path_to_msgpack/include/msgpack_fwd.hpp"
#endif

workaround/msgpack_impl.hpp

#ifndef WORKAROUND_MSGPACK_IMPL_HPP
#define WORKAROUND_MSGPACK_IMPL_HPP
#include "path_to_msgpack/include/msgpack.hpp"
#endif

g++ -Iworkaround -Ipath_to_msgpack/include your_program.cpp

[NOTE: left path has higher priority]

msgpack-c never include msgpack.hpp internally. So this workaround should work.

Now, the library header files don't include path_to_msgpack/include/msgpack.hpp.
If the library includes path_to_msgpack/include/msgpack/object.hpp directly, the same workaround should work. Because object.hpp is included only from path_to_msgpack/include/msgpack.hpp.

Finally, include workaround/msgpack_impl.hpp from your_program.cpp after other headers inclusion.

your_program.cpp

#include <third_party_header1.hpp>
#include <third_party_header2.hpp>
#include <your_header1.hpp>
#include <your_header2.hpp>
// ...
#include <msgpack_impl.hpp>

Mechanism

The template versions of packing/converting operators are defined in object.hpp.
See https://github.com/msgpack/msgpack-c/blob/master/include/msgpack/object.hpp#L94

In order to dispatch to the apropriate overload of the packing/converting operator, all overloads should be declared before invoking them. So I created *_fwd.hpp files and include them from object.hpp. It works well. To support user defined types, I created msgpack_fwd.hpp. It originally contains a minimal information to declare the operators for user defined types. But now, msgpack_fwd.hpp has a most of msgpack function except object.hpp.

[redboltz]

I wrote a workaround approach above.

Here is a straight forward approach. After applying #261, libraries that use msgpack-c replace msgpack.hpp with msgpack_fwd.hpp when the libraries support msgpack-c 1.0.0 or later.

Both workaround approach and straight forward approach work fine in my small example. I believe that it should work well on your project. Please let me know your result.

[davidchappelle]

I seem to still have a problem with cases where msgpack::type::nil is used within header files:

In file included from /home/dchappelle/projects/msgpack-rpc-boost/src/msgpack/rpc/future.h:27:0,
                 from /home/dchappelle/projects/msgpack-rpc-boost/src/msgpack/rpc/exception.h:22,
                 from /home/dchappelle/projects/msgpack-rpc-boost/src/msgpack/rpc/session.h:24,
                 from /home/dchappelle/projects/msgpack-rpc-boost/src/msgpack/rpc/client.h:22,
                 from /home/dchappelle/projects/msgpack-rpc-boost/src/msgpack/rpc/client.cc:18:
/usr/local/include/msgpack/adaptor/nil.hpp: In function ‘void msgpack::v1::operator<<(msgpack::v1::object::with_zone&, msgpack::v1::type::nil)’:
/usr/local/include/msgpack/adaptor/nil.hpp:54:29: error: invalid static_cast from type ‘msgpack::v1::object::with_zone’ to type ‘msgpack::v1::object&’
     { static_cast<object&>(o) << v; }
```                             ^

Seems that object_fwd.hpp is not enough here because it only provides a forward declaration for object::with_zone.

[redboltz]

Thank you for reporting! I will check it soon.

[davidchappelle]

Looks like moving object::with_zone into object_fwd.hpp is the right thing to do.

[davidchappelle]

I am also finding that I need to now include msgpack/adaptor/nil.hpp into header files. Is this ok?

[redboltz]

I've just committed redboltz@a35acc6

[davidchappelle]

Ok cool. I also see that unpack.hpp includes object.hpp. So if I declare a msgpack::unpacker as a class member variable I am now pulling in object.hpp.

[redboltz]

I also see that unpack.hpp includes object.hpp.

It has been fixed in #261
https://github.com/msgpack/msgpack-c/pull/261/files#diff-f5a1fe6bd74ff671f35f7e74e7c6f734R22

[davidchappelle]

I almost feel like all of this could have been avoided if we had taken an approach similar to std::hash. For example, if you want to define a hash operator for a custom type:

namespace std {
    template<> struct hash<services::service_info>
    {   
        size_t operator()(const services::service_info& info) const
        {
            return hash<services::service_id>()(info.id());
        }
    };  
} // namespace std

We could have taken the very same approach with msgpack-c and defined operator<< and operator>> in the same manner. Then we wouldn't have all of these include ordering constraints.

[redboltz]

I am also finding that I need to now include msgpack/adaptor/nil.hpp into header files. Is this ok?

Yes, it is. Or you can include msgpack/type.hpp.
It contains nil.hpp
https://github.com/msgpack/msgpack-c/blob/master/include/msgpack/type.hpp

[redboltz]

We could have taken the very same approach with msgpack-c and defined operator<< and operator>> in the same manner. Then we wouldn't have all of these include ordering constraints.

It seems to be excellent idea!!
I've checked it quickly.

msgpack-c 0.5.9 and older version uses ADL and function (operator<< and >> ) overloading in order to appropriate dispatch. It cannot work well with API versioning.

So I introduced include ordering approach. It solves both appropriate dispatch and API versioning. However, include ordering is not easy to use. I thought that we need to accept that inconvenience.

http://melpon.org/wandbox/permlink/Xc5K9CuFPsZzCEhO
User defined overloads must be placed prior to the template definition. (See line 34)

Using function template (operator<< and >>) specialization instead of overloading solves both appropriate dispath and API versioning. And there is no include ordering restriction.

http://melpon.org/wandbox/permlink/sTVu0SAHTTXbPtUJ

I will apply your approach to msgpack-c.

It could be a pretty big update. I need time to implement and test them. But I will do it as soon as possible.

Thank you @davidchappelle, I appreciate your help.