Re: [Boost-users] problems with Boost.Thread on VS10

Subject: Re: [Boost-users] problems with Boost.Thread on VS10
From: Igor R (boost.lists_at_[hidden])
Date: 2012-04-05 03:32:12

> I'm trying to use a packaged_task, and get an error on creation.
>
> Â  Â  Â  Â template<typename R,typename F>
> Â  Â  Â  Â struct task_object:
> Â  Â  Â  Â  Â  Â task_base<R>
> Â  Â  Â  Â {
> Â  Â  Â  Â  Â  Â F f;
> Â  Â  Â  Â  Â  Â task_object(F const& f_): Â  // << refers to look here
> Â  Â  Â  Â  Â  Â  Â  Â f(f_)
> Â  Â  Â  Â  Â  Â {}
> #ifndef BOOST_NO_RVALUE_REFERENCES
> Â  Â  Â  Â  Â  Â task_object(F&& f_): Â  Â  Â  Â  // <<<< Error here
> Â  Â  Â  Â  Â  Â  Â  Â f(f_)
> Â  Â  Â  Â  Â  Â {}
>
>
> E:\boost_1_49\boost/thread/future.hpp(1251): error C2535:
> 'boost::detail::task_object<R,F>::task_object(F)' : member function already
> defined or declared
> Â  Â  Â  Â  Â with
> Â  Â  Â  Â  Â [
> Â  Â  Â  Â  Â  Â  Â R=size_t,
>
> Â F=std::tr1::_Bind<size_t,size_t,std::tr1::_Bind1<std::tr1::_Callable_fun<size_t
> (__cdecl *const )(std::string &),false>,const char *>> &
> Â  Â  Â  Â  Â ]
> Â  Â  Â  Â  Â E:\boost_1_49\boost/thread/future.hpp(1247) : see declaration of
> 'boost::detail::task_object<R,F>::task_object'
> Â  Â  Â  Â  Â with
> Â  Â  Â  Â  Â [
> Â  Â  Â  Â  Â  Â  Â R=size_t,
>
> Â F=std::tr1::_Bind<size_t,size_t,std::tr1::_Bind1<std::tr1::_Callable_fun<size_t
> (__cdecl *const )(std::string &),false>,const char *>> &
> Â  Â  Â  Â  Â ]

Can you provide a trivial example that reproduces the issue?

#include <boost/thread.hpp>
int main()
{
   ???
}