[Boost-users] [Accmulators][ConceptCheck]: Many warnings for constructing accumulator with density

Hi, the following line results in several kB of warnings: accumulator_set > acc(tag::density::cache_size=10, tag::density::num_bins=5); include/boost/concept_check.hpp:335: warning: non-static reference 'const double& boost::UnaryFunction, double, const double&>::arg' in class without a constructor gcc-4.2.4, boost-1.41 Am I doing something wrong? Or is there a way to avoid these warnings (other than to turn off warnings)? Regards, Roland