Hi, The following used to compile with MinGW GCC 3.4.2: <code> #include #include #include <iostream> class my_sink : public boost::iostreams::sink { public: std::streamsize write(char const *, std::streamsize size) { return size; } void foo() { std::cout << "foo() called" << std::endl; } }; int main() { boost::iostreams::stream_facade out; out->foo(); return 0; } </code> Now I get the following error: E:/libs/boost/boost/iostreams/stream_facade.hpp: In member function `my_sink * boost::iostreams::stream_facade ::operator->()': boost_iostreams_issues.cpp:36: instantiated from here E:/libs/boost/boost/iostreams/stream_facade.hpp:119: error: no match for 'operator *' in '*( ( ( boost::base_from_member< boost::iostreams::streambuf_facade< my_sink, char_traits<char>, boost::iostreams::output >, 0 > * )( (boost::iostreams::stream_facade * )this ) ) + 4u )->boost::base_from_member< boost::iostreams::streambuf_facade< my_sink, char_traits<char>, boost::iostreams::output >, 0 >::member' It compiles if I remove the call to foo(). What must I do to make it work again? Thanks, -- Daniel Schlyder http://bitblaze.com/