[boost] Re: [FOREACH] new version available, testers needed

From: Eric Niebler (eric_at_[hidden])
Date: 2005-03-10 10:57:17

Russell Hind wrote:
> 
> I now get an error on line 311 of foreach.hpp which is in
> 
> template<typename T>
> struct is_range_base
> {
>     BOOST_STATIC_CONSTANT(size_t, size = 
> sizeof(boost::foreach::is_range_fun((T*)0)));
>     BOOST_STATIC_CONSTANT(bool, value = sizeof(yes_type)==size);
>     typedef mpl::bool_<value> type;
> };
> 
> The error is on the typedef mpl::bool_<value> type line. (with and 
> without the #defines in).
> 
> [C++ Error] foreach.hpp(311): E2231 Member is_range_base<T>::value 
> cannot be used without an object
> [C++ Error] foreach.hpp(311): E2299 Cannot generate template 
> specialization from 'mpl::bool_<C_>'
> [C++ Error] foreach.hpp(311): E2040 Declaration terminated incorrectly
> 

I'm afraid you're out of luck, for now. Without access to this compiler, 
or knowledge of it's quirks, there's nothing I can do. I'll gladly 
accept a patch if you can make it work. The first thing I would try if I 
were you would be to change the line:

      typedef mpl::bool_<value> type;

to

      typedef mpl::bool_<is_range_base<T>::value> type;

That's all I can think of right now.

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com