Re: [Boost-users] [serialization] newbie questionregardingserialization of std::list<int>

15 Mar 2006


      Hmmm I just compiled on my system with gcc 3.3, vc 7.1, and comeau
all without problems.  I'm using the current cvs HEAD but I wouldn't
think that would make a difference:

#include <fstream>

#include <list>

#include 

#include 

int main(int argc, char** argv)

{

typedef std::list<int> List;

List myList;

myList.push_back(1);

myList.push_back(2);

myList.push_back(3);

myList.push_back(4);

std::ofstream ofs("archive.txt");

boost::archive::text_oarchive oa(ofs);

oa & myList;

}


Robert Ramey


Max Schoebinger wrote:
...
Hi,
I also tried using the & operator, but this also results in a compiler
error:
/opt/toolkits/linux32/gcc-3.3/boost-1-33-1/include/boost-1_33_1/boost/archive/detail/oserializer.hpp:108:
error: incomplete type
'boost::serialization::extended_type_info_null >' cannot be used to name a scope
What would be a minimal example for serializing a std::list<int>?
Thank you for your help!
Max
Robert Ramey schrieb:
...
the << operator can only be used for "const" objects - the
& operator can be used for anything.
This is explained in the "rationale" section of the documentation.
Robert Ramey
Max Schoebinger wrote:
...
Hi everybody,
I am new to the serialization library and encountered a simple
problem which I couldn't solve. I'd like to serialize simple stl
containers. A minimal example is
#include <fstream>
#include <list>
#include 
#include 
int main(int argc, char** argv)
{
    typedef std::list<int> List;
List myList;
    myList.push_back(1);
    myList.push_back(2);
    myList.push_back(3);
    myList.push_back(4);
    std::ofstream ofs("archive.txt");
    boost::archive::text_oarchive oa(ofs);
    oa << myList;
}
This doesn't compile under Linux using gcc-3.3 and boost-1.33.1
giving the following compiler error:
/opt/toolkits/linux32/gcc-3.3/boost-1-33-1/include/boost-1_33_1/boost/archive/detail/oserializer.hpp:567:
error: incomplete type `boost::STATIC_ASSERTION_FAILURE<false>' does
not have member `value'
Looking at the code at the given position hints that the type which
should be serialized should be marked as track_never. I added the
following command below the typedef of List
BOOST_CLASS_TRACKING(List, boost::serialization::track_never)
which also doesn't solve the problem...
Maybe I am missing something very basic. I would be very thankful,
if somebody could lift the curtain in front of my eyes ;-)
Best Regards,
Max