http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52348
--- Comment #3 from Matthias Dahl <ua_gcc_bugzi...@binary-island.eu> 2012-02-23 10:21:53 UTC --- The warning with gcc 4.3.x is correct because of the lack of support for OpenMP 3.0. Starting with 4.4, gcc supports OpenMP 3.0 which allows unsigned iteration variables.
