id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
7474	compilation error in boost::serialization	Like Gao <gao.like@…>	Robert Ramey	"Error: passing 'const ... discards qualifiers'

Related File: /opt/local/include/boost/serialization/split_member.hpp

Root cause:
In /opt/local/include/boost/serialization/split_member.hpp:
calling access::member_save() with a ""const & T""
{{{
    template<class Archive, class T>
    struct member_saver {
        static void invoke(
            Archive & ar, 
            const T & t,
            const unsigned int file_version
        ){
        	access::member_save(ar, t, file_version);
                                                       ^^ t is ""const T&""
        }
    };
}}}
But in the called, parameter t is not expecting ""const"". 
See file /opt/local/include/boost/serialization/access.hpp: 
{{{
    // pass calls to users's class implementation
    template<class Archive, class T>
    static void member_save(
        Archive & ar, 
        //const T & t,
        T & t,
        const unsigned int file_version
    ){
        t.save(ar, file_version);
    }
}}}


Error trace:
* Invoking: GCC C++ Compiler
* g++ -DOS_MACOSX -I/opt/local/gtest/include -I../third_party/leveldb-1.5.0/include -I../third_party/leveldb-1.5.0 -I/opt/local/include -I../src/server/cse -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF""test/server/cse/bucket_addcells.d"" -MT""test/server/cse/bucket_addcells.d"" -o ""test/server/cse/bucket_addcells.o"" ""../test/server/cse/bucket_addcells.cpp""
* /opt/local/include/boost/serialization/access.hpp: In static member function 'static void boost::serialization::access::member_save(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = const cse::SortedBucket<int, float>]':
* /opt/local/include/boost/serialization/split_member.hpp:43:   instantiated from 'static void boost::serialization::detail::member_saver<Archive, T>::invoke(Archive&, const T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = cse::SortedBucket<int, float>]'
* /opt/local/include/boost/serialization/split_member.hpp:70:   instantiated from 'void boost::serialization::split_member(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = cse::SortedBucket<int, float>]'
* ../src/server/cse/io/sorted.hpp:56:   instantiated from 'void cse::SortedBucket<KEY, VAL>::serialize(Archive&, unsigned int) [with Archive = boost::archive::text_oarchive, KEY = int, VAL = float]'
* /opt/local/include/boost/serialization/access.hpp:118:   instantiated from 'static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = cse::SortedBucket<int, float>]'
* /opt/local/include/boost/serialization/serialization.hpp:69:   instantiated from 'void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = cse::SortedBucket<int, float>]' 
* /opt/local/include/boost/serialization/serialization.hpp:128:   instantiated from 'void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = cse::SortedBucket<int, float>]'
* /opt/local/include/boost/archive/detail/oserializer.hpp:148:   instantiated from 'void boost::archive::detail::oserializer<Archive, T>::save_object_data(boost::archive::detail::basic_oarchive&, const void*) const [with Archive = boost::archive::text_oarchive, T = cse::SortedBucket<int, float>]' ../test/server/cse/bucket_addcells.cpp:63:   instantiated from here
* /opt/local/include/boost/serialization/access.hpp:93: error: passing 'const cse::SortedBucket<int, float>' as 'this' argument of 'void cse::SortedBucket<KEY, VAL>::save(Archive&, unsigned int) [with Archive = boost::archive::text_oarchive, KEY = int, VAL = float]' discards qualifiers"	Bugs	closed	To Be Determined	serialization	Boost Release Branch	Problem	invalid