https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55203
--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> --- The core bits of this feature are in place but the std::string test case is still not diagnosed because string has non-trivial ctor and dtor and isn't decorated using the warn_unused attribute. Jonathan, what's the next step? It sounds as though you don't think decorating nearly every libstdc++ class makes sense. Should -Wunused be tweaked to diagnose unused variables of all types and let users deal with the fallout for RAII classes by decorating then with attribute unused? Or close this bug as resolved?
