http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13029
--- Comment #7 from Chengnian Sun <chengniansun at gmail dot com> --- Thanks, Jakub and Mikael. I see it now. IMHO, it might be worthy to add a flag -Wunused-const-variable similar to Clang, which is not included either -Wall or -Wextra. Therefore the end user can decide whether to enable this warning based on their specific scenario. I think it is better than the current case that people who need this warning support cannot get it.
