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