opts_set(opts.werror, WARN_INVALID_PARAMETER_COUNT, true);
opts_set(opts.werror, WARN_MISSING_RETURN_VALUES, true);
opts_set(opts.flags, EXPRESSIONS_FOR_BUILTINS, true);
opts_set(opts.werror, WARN_INVALID_PARAMETER_COUNT, true);
opts_set(opts.werror, WARN_MISSING_RETURN_VALUES, true);
opts_set(opts.flags, EXPRESSIONS_FOR_BUILTINS, true);