id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 3505,mapped_file windows handle validity check patch against 1.40.0,yrs90@…,Jonathan Turkanis,Windows CreateFile returns INVALID_HANDLE_VALUE on failure while CreateFileMapping returns NULL. is_open() and cleanup_and_throw(...) assumed reversed.,Bugs,closed,Boost 1.41.0,iostreams,Boost 1.40.0,Problem,fixed,,