unused variable ‘rolls’ [-Wunused-variable]

control reaches end of non-void function [-Wreturn-type]

ignoring attributes on template argument ‘int (*)(FILE*)’ [-Wignored-attributes]

unused variable ‘chance’ [-Wunused-variable]

‘std::string dump_requirements(const requirement_data&, int, const std::map<string_id<Skill>, int>&)’ defined but not used [-Wunused-function]

unused variable ‘weight_factor’ [-Wunused-variable]