Compling error on ubuntu: invalid initialization of non-const reference

[ptx9363]

Hello, while i'm compiling this project, i have encountered following errors:

vanilla-rtb/rtb/messaging/serialization.hpp:222:28: error: invalid initialization of non-const reference of type ‘long unsigned int&’ from an rvalue of type ‘jsonv::detail::string_view::size_type {aka long unsigned int}’
             ar & value.size();
                            ^
In file included from /usr/include/boost/archive/detail/common_oarchive.hpp:22:0,
                 from /usr/include/boost/archive/basic_binary_oarchive.hpp:34,
                 from /usr/include/boost/archive/binary_oarchive_impl.hpp:23,
                 from /usr/include/boost/archive/binary_oarchive.hpp:21,
                 from /home/pantianxiang/vanilla-rtb/rtb/messaging/communicator.hpp:31,
                 from /home/pantianxiang/vanilla-rtb/examples/exchange_handler_test.cpp:13:
/usr/include/boost/archive/detail/interface_oarchive.hpp:69:15: note:   initializing argument 1 of ‘Archive& boost::archive::detail::interface_oarchive<Archive>::operator&(T&) [with T = long unsigned int; Archive = boost::archive::binary_oarchive]’
     Archive & operator&(T & t){
               ^
In file included from /usr/include/c++/5/algorithm:62:0,
                 from /usr/include/boost/smart_ptr/shared_ptr.hpp:37,
                 from /usr/include/boost/log/core/core.hpp:19,
                 from /usr/include/boost/log/sources/basic_logger.hpp:37,
                 from /usr/include/boost/log/sources/severity_logger.hpp:23,
                 from /usr/include/boost/log/trivial.hpp:22,
                 from /home/pantianxiang/vanilla-rtb/examples/exchange_handler_test.cpp:2:
/usr/include/c++/5/bits/stl_algo.h:3761:5: error: ‘_Funct std::for_each(_IIter, _IIter, _Funct) [with _IIter = const char*; _Funct = boost::serialization::save(Archive&, const string_view&, unsigned int) [with Archive = boost::archive::binary_oarchive; jsonv::string_view = jsonv::detail::string_view]::<lambda(char)>]’, declared using local type ‘boost::serialization::save(Archive&, const string_view&, unsigned int) [with Archive = boost::archive::binary_oarchive; jsonv::string_view = jsonv::detail::string_view]::<lambda(char)>’, is used but never defined [-fpermissive]
     for_each(_InputIterator __first, _InputIterator __last, _Function __f)
     ^
examples/CMakeFiles/exchange_handler_test.dir/build.make:62: recipe for target 'examples/CMakeFiles/exchange_handler_test.dir/exchange_handler_test.cpp.o' failed

Seem like the initialization od value.size() is invalid, yet i'm not aware how to initialize it correctly. Looking forward for your help.

[venediktov]

Please let us know version of

• gcc
• boost
• cmake

[venediktov]

Hi ptx9363, We have discovered an issue with boost versions < 1.60 as it declared operator with reference and not const reference

Archive & operator&(T & t)

And it's been a known issue in boost.serialization for a while and it's been fixed in 1.60 onward

Archive & operator&(const T & t)

Please upgrade your boost to >= 1.60 . I am going to close this issue as resolved by pull request #54 If after upgrade it does not work for you please re-open this issue.