id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 5595,Windows: Cannot write to files which have been mapped to memory in other threads/processes,Armin Pies ,Jonathan Turkanis,"Windows: If I try to open a file for writing which has been memory mapped by using boost::iostreams::mapped_file_source, I get an ""Permission denied"". Under Linux (e.g. Ubuntu, openSUSE) there is no problem. The cause of this behavior seems to be, that mapped_file_impl::open_file uses CreateFile WIN32 API with the parameter FILE_SHARE_READ instead of FILE_SHARE_WRITE. Is this supposed to be like this? ",Bugs,new,To Be Determined,iostreams,Boost 1.43.0,Problem,,"memory mapping, windows",