id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9754	boost::is_function VS compile error (for const operator function)	Yaroslav Lukyanchuk <yarosladov@…>	John Maddock	"If you try to evaluate boost::is_function on functions that have the same signature and one of them are member const operator function, VC++ (10 through 12) fires compile error:

Sample minimal code:

struct Functor {
  void operator()() const {}
  };
boost::is_function<void()>::value;
boost::is_function<decltype(Functor().operator())>::value;

Compiler output:
1>$(path)\boost\type_traits\is_function.hpp(72): error C2373: 't' : redefinition; different type modifiers
1>          $(path)\boost\type_traits\is_function.hpp(72) : see declaration of 't'
1>          $(path)\boost\type_traits\is_function.hpp(97) : see reference to class template instantiation 'boost::detail::is_function_impl<T>' being compiled"	Bugs	closed	To Be Determined	type_traits	Boost 1.55.0	Problem	invalid	boost::is_function, compile error