id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
6919,g++ -std=c++11 breaks class inheritance with boost::shared_ptr,altan@…,Ralf W. Grosse-Kunstleve,"
This simple program was developed to test sharing a C++ class with inheritance to Python. Output crashes inside boost::python when it is compiled by -std=c++11 flag in g++ 4.7.0 (NOTE: It works ok with g++ 4.4.6 -std=c++0x)

Compiler: GNU 4.7.0
Platforms: Centos 6.2, Mac OS X Lion
Boost: 1.49.0
Python: 2.7.3

// Crash when running test3 produced by:
//g++ test3.cc -I../../ext/boost/Linux/include -I../../ext/python/Linux/include ../../ext/boost/Linux/lib/libboost_python.a ../../ext/python/Linux/lib/libpython.so -o test3 -std=c++11
//
// No crash when running test3 produced by:
//g++ test3.cc -I../../ext/boost/Linux/include -I../../ext/python/Linux/include ../../ext/boost/Linux/lib/libboost_python.a ../../ext/python/Linux/lib/libpython.so -o test3
//
#include <boost/python.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/make_shared.hpp>
#include <iostream>

using namespace std;

namespace bp = boost::python;

struct Foo{
  virtual void doSomething() {
    cout << ""Foo"" << endl;
  }
};

struct Goo : Foo {
  virtual void doSomething() {
    cout << ""Goo"" << endl;
  }
};


BOOST_PYTHON_MODULE(hello) {
  bp::class_<Foo, boost::shared_ptr<Foo> >(""Foo"")
    .def(""doSomething"", &Foo::doSomething); 
  bp::class_<Goo, bp::bases<Foo>, boost::shared_ptr<Goo> >(""Goo"");
};
// NOTE: Output works allright when there is no shared_ptr in bp::class_ above

int main(int argc, char **argv)
{
    Py_Initialize();
    bp::object main = bp::import(""__main__"");
    bp::object main_namespace = main.attr(""__dict__"");
    inithello();
    main_namespace[""hello""] = bp::import(""hello"");
    bp::exec(""a = hello.Goo(); a.doSomething()"", main_namespace);
    //Py_Main(argc, argv);
    Py_Finalize();
    return 0;
}
",Bugs,closed,To Be Determined,python USE GITHUB,Boost 1.49.0,Problem,invalid,boost python class inheritance c++11,altan@…