I recently migrated all the development to the 64bit Linux + gcc 4.6.1 and fixed all the errors and warnings. So if you sync it should be fine. Also the previous voronoi_fixed_int_test.cpp* *won't compile so please use the new one (in the attachments).
Hmmm, with the latest sandbox code I and your new test case I still see: 1> voronoi_fixed_int_test.cpp 1>m:\data\boost\sandbox\gtl\boost\polygon\detail\voronoi_robust_fpt.hpp(466): error C2784: 'boost::polygon::detail::robust_dif<T> boost::polygon::detail::operator /(const boost::polygon::detail::robust_dif<T> &,const T &)' : could not deduce template argument for 'const boost::polygon::detail::robust_dif<T> &' from 'double' 1> m:\data\boost\sandbox\gtl\boost\polygon\detail\voronoi_robust_fpt.hpp(431) : see declaration of 'boost::polygon::detail::operator /' 1> m:\data\boost\sandbox\gtl\boost\polygon\detail\voronoi_robust_fpt.hpp(460) : while compiling class template member function 'boost::polygon::detail::extended_exponent_fpt<_fpt> boost::polygon::detail::robust_sqrt_expr<_int,boost::polygon::detail::extended_exponent_fpt<_fpt>,_converter>::eval2(_int *,_int *)' 1> with 1> [ 1> _fpt=double, 1> _int=boost::multiprecision::mp_number<boost::multiprecision::cpp_int_backend<>>, 1> _converter=dummy_efpt_converter 1> ] 1> m:\data\boost\sandbox\gtl\boost\polygon\detail/voronoi_predicates.hpp(978) : see reference to class template instantiation 'boost::polygon::detail::robust_sqrt_expr<_int,_fpt,_converter>' being compiled 1> with 1> [ 1> _int=boost::multiprecision::mp_number<boost::multiprecision::cpp_int_backend<>>, 1> _fpt=boost::polygon::detail::extended_exponent_fpt<double>, 1> _converter=dummy_efpt_converter 1> ] 1> m:\data\boost\sandbox\gtl\boost\polygon\detail/voronoi_predicates.hpp(1373) : see reference to class template instantiation 'boost::polygon::detail::voronoi_predicates<CTYPE_TRAITS>::mp_circle_formation_functor<Site,Circle>' being compiled 1> with 1> [ 1> CTYPE_TRAITS=voronoi_user_traits, 1> Site=boost::polygon::detail::site_event<int>, 1> Circle=boost::polygon::detail::circle_event<double> 1> ] 1> M:\data\boost\sandbox\gtl\boost/polygon/voronoi_builder.hpp(526) : see reference to class template instantiation 'boost::polygon::detail::voronoi_predicates<CTYPE_TRAITS>::circle_formation_predicate<Site,Circle>' being compiled 1> with 1> [ 1> CTYPE_TRAITS=voronoi_user_traits, 1> Site=boost::polygon::detail::site_event<int>, 1> Circle=boost::polygon::detail::circle_event<double> 1> ] 1> ..\..\..\performance\voronoi_fixed_int_test.cpp(84) : see reference to class template instantiation 'boost::polygon::voronoi_builder<T,CTT>' being compiled 1> with 1> [ 1> T=int, 1> CTT=voronoi_user_traits 1> ] 1>m:\data\boost\sandbox\gtl\boost\polygon\detail\voronoi_robust_fpt.hpp(466): error C2677: binary '/' : no global operator found which takes type 'boost::polygon::detail::extended_exponent_fpt<_fpt>' (or there is no acceptable conversion) 1> with 1> [ 1> _fpt=double 1> ] ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== John.