[Boost-bugs] [Boost C++ Libraries] #2725: boost::filesystem::exists throws on Windows if the drive letter doesn't exist

Subject: [Boost-bugs] [Boost C++ Libraries] #2725: boost::filesystem::exists throws on Windows if the drive letter doesn't exist
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-02-04 15:10:59

#2725: boost::filesystem::exists throws on Windows if the drive letter doesn't
exist
--------------------------------------+-------------------------------------
 Reporter:  davidjward30_at_[hidden]  |       Owner:  bemandawes
     Type:  Bugs                      |      Status:  new       
Milestone:  Boost 1.38.0              |   Component:  filesystem
  Version:  Boost 1.37.0              |    Severity:  Problem   
 Keywords:                            |  
--------------------------------------+-------------------------------------
 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.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2725>
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