557   const struct advance *pgoal = valid_advance_by_number(goal);  in research_goal_step()  local
559   if (NULL == pgoal  in research_goal_step()
564   advance_req_iterate(pgoal, preq) {  in research_goal_step()
587   const struct advance *pgoal = valid_advance_by_number(goal);  in research_goal_unknown_techs()  local
589   if (NULL == pgoal) {  in research_goal_unknown_techs()
594     return pgoal->num_reqs;  in research_goal_unknown_techs()
609   const struct advance *pgoal = valid_advance_by_number(goal);  in research_goal_bulbs_required()  local
611   if (NULL == pgoal) {  in research_goal_bulbs_required()
616      return game.info.base_tech_cost * pgoal->num_reqs  in research_goal_bulbs_required()
617             * (pgoal->num_reqs + 1) / 2;  in research_goal_bulbs_required()
621     advance_req_iterate(pgoal, preq) {  in research_goal_bulbs_required()
637   const struct advance *pgoal, *ptech;  in research_goal_tech_req()  local
640       || NULL == (pgoal = valid_advance_by_number(goal))  in research_goal_tech_req()
646     advance_req_iterate(pgoal, preq) {  in research_goal_tech_req()