Re: [Boost-users] boost::variant & c++11

10 May 2013


      2013/5/8 Igor R :
...
...
#include 
//A simplified wrapper
template<typename T>
struct wrap {
    T t;
    wrap(T& _t) : t(_t) {}
    operator T() const {
        return t;
    }
    T force() const {
        return t;
    }
};
struct A{}; struct B{};
typedef boost::variant my_variant;
int main() {
    A a;
    my_variant x(a);
#ifndef WAR
    my_variant y = wrap(x);
#else
    my_variant y = wrap(x).force();
#endif
}
And the error:
/home/bcatanzaro/boost_1_53_0/boost/variant/variant.hpp:1574:9: error: no
matching function for call to ‘boost::variant::initializer::initialize(void*,
std::remove_reference >&>::type)’
FWIW, your case can be reproduced with even more trivial code:
#include 
typedef boost::variant<int> my_variant;
struct convertible
{
  operator my_variant() const
  {
        return my_variant();
  }
};
int main()
{
  convertible x;
  my_variant y = x;
}
I'll take care of that issue, but not 100% sure that there will be
enough time to push fix to 1.54.
There is a ticket for that issue: https://svn.boost.org/trac/boost/ticket/8555 .

--
Best regards,
Antony Polukhin