rt__valid_civil_p 4065 ext/date/date_core.c 	    VALUE jd = rt__valid_civil_p(year, mon, mday, sg);
rt__valid_civil_p 4150 ext/date/date_core.c 	jd = rt__valid_civil_p(ref_hash("year"),
rt__valid_civil_p 7750 ext/date/date_core.c 	jd = rt__valid_civil_p(ref_hash("year"),