s_scanflike
if (def == NULL || (!def->s_printflike && !def->s_scanflike))
if (sym->s_scanflike) {
bool s_scanflike:1;
#define s_scanflike s_s.s_scanflike
if (sym->s_scanflike)
sym->s_scanflike = true;
sym.s_printflike || sym.s_scanflike) {