id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
2725,boost::filesystem::exists throws on Windows if the drive letter doesn't exist,davidjward30@…,Beman Dawes,"boost::filesystem::exists throws on Windows if the drive letter doesn't exist.

This is rather unexpected. It's rather tedious to validate the drive letter beforehand or to have to catch the exception.

I think it's reasonable to say that if the drive doesn't exist then the file doesn't exist.

I noted that status_template checks a list of errors returned by get_file_attributes:

  if ((ec.value() == ERROR_FILE_NOT_FOUND)
        || (ec.value() == ERROR_PATH_NOT_FOUND)
        || (ec.value() == ERROR_INVALID_NAME) // ""tools/jam/src/:sys:stat.h"", ""//foo""
        || (ec.value() == ERROR_INVALID_PARAMETER) // "":sys:stat.h""
        || (ec.value() == ERROR_BAD_PATHNAME) // ""//nosuch"" on Win64
        || (ec.value() == ERROR_BAD_NETPATH


I would propose adding ERROR_INVALID_DRIVE to this list.
",Bugs,closed,Boost 1.38.0,filesystem,Boost 1.37.0,Problem,worksforme,,