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

[christian.leutloff@…]

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.

[Beman Dawes]

Hopefully this has now been fixed by revision 50556.

Since none of the compilers I use issue the warning, please reopen the issue if your compiler still warns.

--Beman

[basilevs@…]

I'm using: boost 1.37 mingw with gcc 1.34 stlport 5.2.1

All these errors appear again.

[Beman Dawes]

The fix wasn't in 1.37. The first release with the fix was 1.38.

If there is any further report of signed vs unsigned comparison warning, please include full information on the version of all software involved, and a copy of one of the warnings.

Thanks,

--Beman