id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 13351,Unable to compile a project using recursive variant under MSVC 2017 15.5 with compiler switch /std:c++17 and /std:c++latest,jhruby.web@…,ebf,"15.4 compiler compiles with all flags std flags without any issues. 15.5 version is unable to compile correctly /std:c++17 and /std:c++latest. Check out the library: https//github.com/no1msd/mstch Configure CMAKE and CMAKE_CXX_FLAGS += /std:c++17 After opening project under visual studio compilation fails: compiler-output.txt Please note that switches /std:c++11 and /std:c++14 are working correctly. Thanks",Bugs,closed,To Be Determined,variant,Boost 1.67.0,Problem,fixed,,