Hi, I found a problem in using boost.function with VC++ 10, the code below reproduces the problem: #include <boost/function.hpp> #include <vector> typedef std::vector<int> test_type; template<class T> struct S { void test_g() { typedef S<T> this_class; boost::function<void (this_class*, test_type)> s(&this_class::g); } void g(test_type){} }; int main() { S<int> s; s.test_g(); } This code is OK with VC++ 2008, but with VC++ 2010, it yields the following message. Is there anything that I can do to solve the ambiguity? Thanks. C:\Boost\include\boost-1_39_0\boost/function/function_template.hpp(538) : error C2668: 'boost::mem_fn' : ambiguous call to overloaded function C:\Boost\include\boost-1_39_0\boost/bind/mem_fn_cc.hpp(25): could be 'bo ost::_mfi::mf1<R,T,A1> boost::mem_fn<void,S<int>,test_type>(R (__thiscall S<int> ::* )(A1))' with [ R=void, T=S<int>, A1=test_type ] C:\Program Files\Microsoft Visual Studio 10.0\VC\INCLUDE\xxmem_fn(32): o r 'std::tr1::_Mem_fn2<_Rx,_Pmf,_Arg0,_Arg1> std::tr1::mem_fn<void,S<T>,tes t_type>(_Rx (__thiscall S<T>::* )(_Arg1))' [found using argument-dependent looku p] with [ _Rx=void, _Pmf=void (__thiscall S<int>::* )(test_type), _Arg0=S<int>, _Arg1=test_type, T=int ] while trying to match the argument list '(void (__thiscall S<T>::* )(tes t_type))' with [ T=int ] .....