Dear boost-Users I'm having problems with calling a function that takes a pointer as the third argument through bind. I cannot explain, why the code below does not compile with the function 'op3' enabled. When changing f3 to void f3(int a, int b, int c) { } it also works. I don't see any reasony why this should fail, since f2 also works. Any ideas how to solve this? // --------------------------------------- void f3(int a, int b, int *c) { } void f2(int a, int *b) { } template <typename F> void op3(F f) { int a = 1, b = 2, c = 3; f(a, b, &c); } template <typename F> void op2(F f) { int a = 1, b = 2; f(a, &b); } void call() { op2(boost::bind(&f2, _1, _2)); //op3(boost::bind(&f3, _1, _2, _3)); } // --------------------------------------- This compiles fine. When uncommenting the line op3(...) in the function "call", gcc fails with: test.cpp: In function `void op3(F) [with F = boost::_bi::bind_t (*)(), boost::arg<2> (*)(), boost::arg<3> (*)()> >]': test.cpp:23: instantiated from here test.cpp:11: error: no match for call to `(boost::_bi::bind_t (*)(), boost::arg<2> (*)(), boost::arg<3> (*)()> >) (int&, int&, int*)' /usr/local/include/boost/bind/bind_template.hpp:18: note: candidates are: typename boost::_bi::result_traits::type boost::_bi::bind_t::operator()() [with R = void, F = void (*)(int, int, int*), L = boost::_bi::list3 (*)(), boost::arg<2> (*)(), boost::arg<3> (*)()>] /usr/local/include/boost/bind/bind_template.hpp:24: note: typename boost::_bi::result_traits::type boost::_bi::bind_t::operator()() const [with R = void, F = void (*)(int, int, int*), L = boost::_bi::list3 (*)(), boost::arg<2> (*)(), boost::arg<3> (*)()>] /usr/local/include/boost/bind/bind_template.hpp:114: note: typename boost::_bi::result_traits::type boost::_bi::bind_t::operator()(A1&, A2&, A3&) [with A1 = int, A2 = int, A3 = int*, R = void, F = void (*)(int, int, int*), L = boost::_bi::list3 (*)(), boost::arg<2> (*)(), boost::arg<3> (*)()>] /usr/local/include/boost/bind/bind_template.hpp:120: note: typename boost::_bi::result_traits::type boost::_bi::bind_t::operator()(A1&, A2&, A3&) const [with A1 = int, A2 = int, A3 = int*, R = void, F = void (*)(int, int, int*), L = boost::_bi::list3 (*)(), boost::arg<2> (*)(), boost::arg<3> (*)()>] MSVC 8 fails with: .\test.cpp(19) : error C2664: 'void boost::_bi::bind_t::operator ()(A1 &,A2 &,A3 &) const' : cannot convert parameter 3 from 'int *__w64 ' to 'int *__w64 &' with [ R=void, F=void (__cdecl *)(int,int,int *), L=boost::_bi::list3,boost::arg<2>,boost::arg<3>>, A1=int, A2=int, A3=int *__w64 ] .\Sleep.cpp(29) : see reference to function template instantiation 'void op3>(boost::_bi::bind_t)' being compiled with [ R=void, F=void (__cdecl *)(int,int,int *), L=boost::_bi::list3,boost::arg<2>,boost::arg<3>> ] Thanks for your help. James