916         const std::size_t result_n =  in operator ()()  local
920         handler_(result_ec, result_n);  in operator ()()
1225         const std::size_t result_n =  in operator ()()  local
1229         handler_(result_ec, result_n);  in operator ()()
1542         const std::size_t result_n =  in operator ()()  local
1546         handler_(result_ec, result_n);  in operator ()()
1852         const std::size_t result_n =  in operator ()()  local
1856         handler_(result_ec, result_n);  in operator ()()
2228         const std::size_t result_n =  in operator ()()  local
2232         handler_(result_ec, result_n);  in operator ()()
2540         const std::size_t result_n =  in operator ()()  local
2544         handler_(result_ec, result_n);  in operator ()()
2862         const std::size_t result_n =  in operator ()()  local
2866         handler_(result_ec, result_n);  in operator ()()
3176         const std::size_t result_n =  in operator ()()  local
3180         handler_(result_ec, result_n);  in operator ()()