Boost::Python register_exception_translator doesn't work in c++0x.

[foom@…]

Error message:

In file included from /usr/include/boost/python.hpp:28:0,
                 from test.cpp:1:
/usr/include/boost/python/exception_translator.hpp: In function ‘void boost::python::register_exception_translator(Translate, boost::type<Target>*) [with ExceptionType = std::out_of_range, Translate = void (*)(const std::out_of_range&)]’:
test.cpp:6:92:   instantiated from here
/usr/include/boost/python/exception_translator.hpp:20:5: sorry, unimplemented: use of ‘type_pack_expansion’ in template
/usr/include/boost/python/exception_translator.hpp:20:5: sorry, unimplemented: use of ‘type_pack_expansion’ in template
/usr/include/boost/python/exception_translator.hpp:20:5: error: call of overloaded ‘bind(boost::python::detail::translate_exception<std::out_of_range, void (*)(const std::out_of_range&)>, boost::arg<1>&, boost::arg<2>&, void (*&)(const std::out_of_range&))’ is ambiguous
/usr/include/boost/bind/bind.hpp:1322:5: note: candidates are: boost::_bi::bind_t<R, F, typename boost::_bi::list_av_3<A1, A2, A3>::type> boost::bind(F, A1, A2, A3) [with R = bool, F = boost::python::detail::translate_exception<std::out_of_range, void (*)(const std::out_of_range&)>, A1 = boost::arg<1>, A2 = boost::arg<2>, A3 = void (*)(const std::out_of_range&), typename boost::_bi::list_av_3<A1, A2, A3>::type = boost::_bi::list3<boost::arg<1>, boost::arg<2>, boost::_bi::value<void (*)(const std::out_of_range&)> >]
/usr/include/c++/4.5/functional:1390:5: note:                 std::_Bind_result<_Result, typename std::_Maybe_wrap_member_pointer<_Functor>::type(_ArgTypes ...)> std::bind(_Functor, _ArgTypes ...) [with _Result = bool, _Functor = boost::python::detail::translate_exception<std::out_of_range, void (*)(const std::out_of_range&)>, _ArgTypes = {boost::arg<1>, boost::arg<2>, void (*)(const std::out_of_range&)}, typename std::_Maybe_wrap_member_pointer<_Functor>::type = boost::python::detail::translate_exception<std::out_of_range, void (*)(const std::out_of_range&)>]

When I compile with: g++-4.5 -std=c++0x -I/usr/include/python2.6 -lboost_python -lpython2.6 test.cpp

Test file:

#include <boost/python.hpp>

void translate_out_of_range(std::out_of_range const& e) { PyErr_SetString(PyExc_IndexError, e.what()); }

int main() {
    boost::python::register_exception_translator<std::out_of_range>(&translate_out_of_range);
}

The problem appears to be the collision between boost::bind and std::bind (new in c++0x).

The fix is trivial: in boost/python/exception_translator.hpp line 21, simply use boost::bind(...) instead of bind(...)

[foom@…]

Ping? Trivial patch; can it be applied?

[Dave Abrahams]

I'd love to but will be completely swamped until after BoostCon

[Matthew Bradbury <matt-bradbury@…>]

Wasn't this fixed in r62198?

[Dave Abrahams]

Looks like it, thanks.