id summary reporter owner description type status milestone component version severity resolution keywords cc 10454 windows_file_codecvt::do_length doesn't use BOOST_CODECVT_DO_LENGTH_CONST m.kosch@… Beman Dawes "In Visual Studio the first parameter of {{{std::codecvt::do_length}}} is defined as a const reference whereas in the derived class {{{windows_file_codecvt}}} the first parameter of {{{do_length}}} it is defined as non-const reference. This leads to improper overloading of the method. See also: #10354" Bugs new To Be Determined filesystem Boost 1.63.0 Problem m.kosch@…