id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9631	function_input_iterator does not work with lambda	Piotr Wygocki <wygos@…>	jeffrey.hellrung	"The following program does not compile on g++-4.8.1/clang-3.4 

  1 #define BOOST_RESULT_OF_USE_DECLTYPE
  2 #include <boost/iterator/function_input_iterator.hpp>
  3 
  4 int main() {    
  5     auto f = [](){return 1;};
  6     auto i = boost::make_function_input_iterator(f, 0);
  7     return 0;
  8 }

error:
g++ main.cpp -std=c++0x -I/home/wygos/libs/boost_1_55_0/include/

    In file included from main.cpp:2:0:
    /home/wygos/libs/boost_1_55_0/include/boost/iterator/function_input_iterator.hpp: In     instantiation of ‘class boost::impl::function_input_iterator<main()::__lambda0, int>’:
    /home/wygos/libs/boost_1_55_0/include/boost/iterator/function_input_iterator.hpp:112:11:     required from ‘class boost::function_input_iterator<main()::__lambda0, int>’
main.cpp:6:54:   required from here
    /home/wygos/libs/boost_1_55_0/include/boost/iterator/function_input_iterator.hpp:26:15: error: no type named ‘result_type’ in ‘struct main()::__lambda0’
         class function_input_iterator
               ^
    /home/wygos/libs/boost_1_55_0/include/boost/iterator/function_input_iterator.hpp:48:17: error: no type named ‘result_type’ in ‘struct main()::__lambda0’
                 dereference() const {
                 ^
    /home/wygos/libs/boost_1_55_0/include/boost/iterator/function_input_iterator.hpp:59:62: error: no type named ‘result_type’ in ‘struct main()::__lambda0’
             mutable optional<typename Function::result_type> value;

Suggested solution:
   function_input_iterator should use boost::result_of"	Bugs	new	To Be Determined	iterator	Boost 1.55.0	Problem