REG_ERPAREN      2414 regex.cpp                        FREE_STACK_RETURN (REG_ERPAREN);
REG_ERPAREN      2434 regex.cpp                        FREE_STACK_RETURN (REG_ERPAREN);
REG_ERPAREN      5550 regex.cpp        if (ret == REG_ERPAREN) ret = REG_EPAREN;