Fix for boost serialisation, portable binary archive on AIX

[avi.bahra@…]

On most platforms, char is signed, however on AIX by default char is unsigned. The portable binary archive assumes the char type is signed.

The fix is simply to replace 'char' with 'signed char' in the correct places.

This is a fairly safe and quick fix, can I please ask the authors of this library to add this fix, for the next version of boost.

Here are the changes I made: (flagged under ' changed ' comment -------------------------------------------------------- portable_binary_iarchive.hpp

void load(signed char & t){ changed

this->primitive_base_t::load(t);

}

------------------------------------------------------------- portable_binary_iarchive.cpp

void portable_binary_iarchive::load_impl(boost::intmax_t & l, char maxsize){

signed char size; changed l = 0; this->primitive_base_t::load(size);

if(0 == size){

return;

}

bool negative = (size < 0); ......

----------------------------------------------------------------- portable_binary_oarchive.hpp

void save(const signed char & t){ changed

this->primitive_base_t::save(t);

}

----------------------------------------------------------- portable_binary_oarchive.cpp

void portable_binary_oarchive::save_impl(

const boost::intmax_t l, const char maxsize

){

signed char size = 0; changed

if(l == 0){

this->primitive_base_t::save(size); return;

}

..........