id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1246	breakage in boost::python svn trunk	ndbecker2@…	Nikolay Mladenov	"New python function sig code breaks this test case (gcc-4.1.2):

#include <boost/shared_ptr.hpp>
#include <boost/python/module.hpp>
#include <boost/python/def.hpp>
#include <boost/python/class.hpp>
#include <boost/python/init.hpp>

using namespace boost::python;

struct base {};
struct concrete : public base {};

struct Test {
  Test (boost::shared_ptr<base> _x) : x (_x) {}
  boost::shared_ptr<base> x;
};

BOOST_PYTHON_MODULE(test1) {
  class_<base, boost::noncopyable> (""base"", ""abstract"", no_init);
  class_<concrete, bases<base> > (""concrete"", ""concrete"");
  class_<Test> (""Test"", init<boost::shared_ptr<base> >())
    .def_readonly (""x"", &Test::x, ""x"") <<<< this seems to trigger the error
  ;
}

g++ -o mod/test1.os -c -g -DBOOST_DISABLE_THREADS -O3 -ftree-vectorize -fstrict-aliasing -ffast-math -DNDEBUG -Wall -fPIC -Isrc -I/usr/local/src/boost.hg -I/usr/include/python2.5 mod/test1.cc
/usr/local/src/boost.hg/boost/python/to_python_value.hpp: In member function 'const PyTypeObject* boost::python::detail::shared_ptr_to_python_value<T>::get_pytype() const [with T = boost::shared_ptr<base>&]':
/usr/local/src/boost.hg/boost/python/detail/caller.hpp:102:   instantiated from 'static const PyTypeObject* boost::python::detail::converter_target_type<ResultConverter>::get_pytype() [with ResultConverter = boost::python::to_python_value<boost::shared_ptr<base>&>]'
/usr/local/src/boost.hg/boost/python/detail/caller.hpp:242:   instantiated from 'static boost::python::detail::py_func_sig_info boost::python::detail::caller_arity<1u>::impl<F, Policies, Sig>::signature() [with F = boost::python::detail::member<boost::shared_ptr<base>, Test>, Policies = boost::python::return_value_policy<boost::python::return_by_value, boost::python::default_call_policies>, Sig = boost::mpl::vector2<boost::shared_ptr<base>&, Test&>]'
/usr/local/src/boost.hg/boost/python/object/py_function.hpp:48:   instantiated from 'boost::python::detail::py_func_sig_info boost::python::objects::caller_py_function_impl<Caller>::signature() const [with Caller = boost::python::detail::caller<boost::python::detail::member<boost::shared_ptr<base>, Test>, boost::python::return_value_policy<boost::python::return_by_value, boost::python::default_call_policies>, boost::mpl::vector2<boost::shared_ptr<base>&, Test&> >]'
mod/test1.cc:22:   instantiated from here
/usr/local/src/boost.hg/boost/python/to_python_value.hpp:109: error: no matching function for call to 'boost::python::detail::shared_ptr_to_python_value<boost::shared_ptr<base>&>::get_pytype(boost::type<boost::shared_ptr<base>&>*) const'
/usr/local/src/boost.hg/boost/python/to_python_value.hpp:109: note: candidates are: const PyTypeObject* boost::python::detail::shared_ptr_to_python_value<T>::get_pytype() const [with T = boost::shared_ptr<base>&]
scons: *** [mod/test1.os] Error 1
scons: building terminated because of errors.

Compilation exited abnormally with code 2 at Wed Sep 12 07:18:15
"	Bugs	closed	To Be Determined	python USE GITHUB	Boost Development Trunk	Showstopper	fixed		rwgk@…