Using boost 1.48 and vs2010 gives me an error when trying to use boost::container::string. #include <boost/container/string.hpp> int main( int, char *[] ) { using boost::container::string; string hello = "hello "; string world = "world"; string hello_world = hello + world; } 1>d:\sdk\boost_1_48_0\boost\container\string.hpp(2368): error C2248: 'boost::container::containers_detail::basic_string_base ::alloc' : cannot access protected member declared in class 'boost::container::containers_detail::basic_string_base ' 1> with 1> [ 1> A=std::allocator<char> 1> ] 1> d:\sdk\boost_1_48_0\boost\container\string.hpp(214) : see declaration of 'boost::container::containers_detail::basic_string_base ::alloc' 1> with 1> [ 1> A=std::allocator<char> 1> ] 1> d:\tmp\xxx.cpp(15) : see reference to function template instantiation 'boost::container::basic_string<CharT,Traits,A> boost::container::operator +<char,std::char_traits<char>,std::allocator<_Ty>>(const boost::container::basic_string<CharT,Traits,A> &,const boost::container::basic_string<CharT,Traits,A> &)' being compiled 1> with 1> [ 1> CharT=char, 1> Traits=std::char_traits<char>, 1> A=std::allocator<char>, 1> _Ty=char 1> ] 1> d:\tmp\xxx.cpp(20) : see reference to function template instantiation 'void hello_world_test<boost::container::string>(void)' being compiled 1> template <class CharT, class Traits, class A> inline basic_string<CharT,Traits,A> operator+(const basic_string<CharT,Traits,A>& x, const basic_string<CharT,Traits,A>& y) { ... str_t result(reserve, x.size() + y.size(), x.alloc()); ... } should this maybe be x.get_allocator() instead of x.alloc()? -- View this message in context: http://boost.2283326.n4.nabble.com/Boost-Container-string-operator-problem-t... Sent from the Boost - Users mailing list archive at Nabble.com.