François Dumont wrote:

Config: STLport 5.0 beta and MSVC 8 (but also reported with 7.1)

It looks like this compiler has a problem with the relation between the basic_string::size_type and basic_format::size_type as soon as the library is not the native one. Here is a patch proposition that return a basic_string::size_type rather than the basic_format::size_type. I think it is quite a secure patch as the method is already using a static_cast<typename string_type::size_type> to return its result and not a simple static_cast<size_type>.

Bests

This reported error is weird, I'm trying to get MSVC 7.1 or 8 to experiment on it. Is anyone aware of issues with recent MSVCs about chained typedefs ? in a template situation ? The situation is : in format_class.hpp : namespace boost { template<class Ch, class Tr, class Alloc> class basic_format { ... typedef std::basic_string<Ch, Tr, Alloc> string_type; typedef typename string_type::size_type size_type; .. size_type size() const; } And, in format_implementation.hpp : namespace boost { template< class Ch, class Tr, class Alloc> typename basic_format<Ch, Tr, Alloc>::size_type basic_format<Ch,Tr, Alloc>:: size () const { ... definition ... } And, apparently, the error (with MSVC 7.1, STL 4.6.2, Boost 1.32) : \boost\format\format_implementation.hpp(216) : error C2244: 'boost::basic_format<Ch,Tr,Alloc>::size' : unable to match function definition to an existing declaration \boost\format\format_class.hpp(58) : see declaration of 'boost::basic_format<Ch,Tr,Alloc>::size' definition 'basic_format<Ch,Tr,Alloc>::size_type boost::basic_format<Ch,Tr,Alloc>::size(void) const' existing declarations 'boost::basic_format<Ch,Tr,Alloc>::size_type boost::basic_format<Ch,Tr,Alloc>::size(void) const' If it works when replacing all mentions of size_type with typename std::basic_string<Ch, Tr, Alloc>::string_type, I could do that, but finding what was happening could be useful anyway. -- Samuel