[Boost-bugs] [Boost C++ Libraries] #2543: path.hpp:947: warning: comparison between signed and unsigned integer expressions

Subject: [Boost-bugs] [Boost C++ Libraries] #2543: path.hpp:947: warning: comparison between signed and unsigned integer expressions
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-11-27 15:20:46

#2543: path.hpp:947: warning: comparison between signed and unsigned integer
expressions
------------------------------------------+---------------------------------
 Reporter:  christian.leutloff_at_[hidden]  |       Owner:  bemandawes
     Type:  Bugs                          |      Status:  new       
Milestone:  To Be Determined              |   Component:  filesystem
  Version:  Boost 1.37.0                  |    Severity:  Problem   
 Keywords:  path, compiler, warning       |  
------------------------------------------+---------------------------------
 Including boost/filesystem.hpp leads to this warning (repeated some more
 times for other lines of code):

 path.hpp:947: warning: comparison between signed and unsigned integer
 expressions

 The compiler is gcc 4.2.3 build for QNX 6. It is executed under WinXP.

 I'm using boost 1.35. But I have verified that the relevant code sections
 in path.hpp are unchanged in svn boost/trunk as of Nov. 25. Therefore I
 would assume that this problem is present in newer versions of boost, too.
 In version 1.33.1 this problem was not present.

 The warning is "fixed" through a typecast from the colon<value_type> to
 (typename string_type::value_type). This applies for slash, too.

 I'm not sure that the typecast is the right solution. But at least it
 works for me ...

 I'll attach the diff against boost version 1.35 to show the affected lines
 of code. If useful I am willing to move the changes or modified changes to
 trunk, too. Please drop me a note if it would be helpful.

 Many many thanks to all the people bringing boost to me! It is a great to
 be able to use this powerful lib.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2543>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.