Hi,
The following piece of code compile successfully on VS2008,VS2010 & GCC
4.5.2 but fails to compile on VS2005.
Is the likely to be because of a bug in VS2005 ? (boost v 1.46.1)
------------------------------------------------------------
#include<iostream>
#include<string>
#include
#include
#include
#include
#include
template<class T>
struct is_recognised_type
{
static const bool value =false;
};
typedef boost::mpl::vectorstd::string naked_variant_type_list;
struct myclass
{
myclass(){}
template<class T>
myclass(const T&t,
const typename
boost::disable_if_c::type * ptr =0,
const typename boost::disable_if_c<
boost::mpl::empty<
typename boost::mpl::filter_view<
naked_variant_type_list,boost::is_convertible
>::type>::value>::type * pt =0,
const typename boost::enable_if_c<
boost::mpl::empty<
typename boost::mpl::filter_view<
naked_variant_type_list,std::tr1::is_base_ofboost::mpl::_,T
>::type>::value>::type * pt2 =0)
{
}
};
int main()
{
myclass m;
m = "hello";
}
------------------------------------------------------------
My workaround is to collapse is_convertible and is_base_of into a
single type_trait is_convertible_but_not_derived_from. and then it works.
The problems seems to be that there are two trait checks, using either one
individualy
seems to work.
Rgds
Narinder
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