[boost] warning in boost::program_options

Hi, I'm using boost::program_options for the first time and noticed that when compiling a program that uses it using gcc's -Wall, it spits out a warning about an unused function parameter: /usr/include/boost-1_32/boost/program_options/value_semantic.hpp:137: warning: unused parameter 'value_store' Can this be corrected? It's just annoying when using -Werror. Since I've seen warnings in other libraries as well, I wonder why those ones aren't being caught in boost's test summary (on the home page). Just adding -Wall to the compiler option would suffice. Regards, rod