After upgrading to boost 1.47, I got the attached enormous warning, ironically saying that names are too long, for a very simple use of boost.spirit. Code:

#include <string> #include <vector> using namespace std; #include namespace bsk = boost::spirit::karma; namespace bsa = boost::spirit::ascii;

vector<string> vUnrecog; //... bsk::generate(ostream_iterator<char>(cout), "Init file options not recognized:\n" << (" \"" << bsa::string << '"' << bsk::eol) % "", vUnrecog);

Is there something I am doing suboptimally or in an old way? (The code has been around for about 2 years now).

It's not your fault, but not ours either :-P Spirit V2.5 (as in V1.47) has been partially rewritten to straighten out a couple of wrinkles and to fix some problems. I believe that's the reason why you're starting to see these warnings now. The only thing I could think of as a workaround is to disable that warning for your code, either via the command line or using #pragma warning(). Regards Hartmut --------------- http://boost-spirit.com