Edit Question - KnowledgeHub

Title Body

Code: #include <functional> struct Foo { virtual void mf() = 0; }; struct Bar: Foo { virtual void mf() {} }; int main() { Bar o; std::reference_wrapper<Foo const> wrapper( o ); } Result with MinGW g++ 4.6.1: [d:\dev\test] > g++ foo.cpp -std=c++0x [d:\dev\test] > _ Result with Visual C++ 10.0: [d:\dev\test] > cl foo.cpp foo.cpp C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\xxcallwrap(8) : error C2259: 'Foo' : cannot instantiate abstract class due to following members: 'void Foo::mf(void)' : is abstract foo.cpp(5) : see declaration of 'Foo::mf' C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\xrefwrap(371) : see reference to class template instantiation 'std::tr1::_Call_wrapper' being compiled with [ _Callable=std::tr1::_Callable_obj ] C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\xrefwrap(416) : see reference to class template instantiation 'std::tr1::_Refwrap_impl' being compiled with [ _Ty=const Foo ] foo.cpp(16) : see reference to class template instantiation 'std::tr1::reference_wrapper' being compiled with [ _Ty=const Foo ] C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\xxcallwrap(8) : error C2027: use of undefined type 'std:: tr1::_Result_of' with [ _Ty=const Foo (void) ] C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\xxcallwrap(9) : error C2143: syntax error : missing ';' before '(' C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\xxcallwrap(9) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\xxcallwrap(10) : er

Tags (comma-separated) Cancel