id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 13105,Add missing top level include guards,anonymous,Douglas Gregor,"This ticket is addressed by this pull request: https://github.com/boostorg/function/pull/13/files The missing top level include guard means that even if boost/function.hpp is included in a pre-compiled header, we still pay the heavy boost pp pre-processing cost every time it is also included. This is very problematic with Visual Studio intellisense: It pre-process and parses the translation unit on the fly to provide syntax/semantic highlighting. In our projects, this fix remove a couple of seconds in this process. (boost/function.hpp is included in many headers that result in pre-processing it multiple time per compilation units)",Bugs,new,To Be Determined,function,Boost 1.64.0,Problem,,,