NS_UNDEF
case NS_UNDEF:
case NS_UNDEF:
struct symbol *sym = lookup_symbol(ident, NS_MACRO | NS_UNDEF);
sym = lookup_symbol(name, NS_MACRO | NS_UNDEF);
sym = lookup_symbol(left->ident, NS_MACRO | NS_UNDEF);
if (attr == sym->attr && sym->namespace == NS_UNDEF)
sym->namespace = NS_UNDEF;