[Boost-users] [Serialize] Problem creating boost::archive::text_iarchive

16 Feb 2009

      Hello,

I'm getting problems creating a boost::archive::text_iarchive with boosts
version 1.35.0 and Visual C++ Studio 2005 (Version 8). When I do so I get a
std::bad_alloc exception. The code is as follows:

void Serialize::deserialize(std::ifstream &modelFile,
                            CoreModel &c)
{
    try
    {
        boost::archive::text_iarchive ia(modelFile); // This line throws the
exception (I've seen it with the debugger)
        ia >> c;
    }
    catch (std::exception& ex)
    {
        // I catch the bad_alloc here
    }
}

And this code si called this way:

...

for (...)
{
    modelFile.open(model_name.c_str(), std::ios::binary);
    if (modelFile.is_open() == false)
    {
        // ... We deal with the error but it does not get into here
    }

    CoreModel model;
    Serialize::deserialize(modelFile, model);

    ....
}

With the debugger I have seen that the exception is thrown into the method
text_iarchive_impl<Archive>::load. The method basic_text_iprimitive::load is
not setting the size of the string and when the string resize is done the
value is huge (is garbage actually) and it throws the std::bad_alloc.

Digging into the mailing list I have seen a thread that explains the same
problem:

http://lists.boost.org/boost-users/2006/03/18032.php

But the solution proposed there does not fit me (As far as I can see).

/Thanks
Francisco Javier Sanz Olviera