do_add_field(a_time, minutes, extra, 60, add_hours); 
do_add_time_field(a_time, minutes, extra, 60, add_hours); 
add_minutes(ha_time_t *a_time, int extra) {	if(extra < 0) {		sub_minutes(a_time, -extra);	} else {		do_add_field(a_time, minutes, extra, 60, add_hours);	}}
8182	/local/tlutelli/issta_data/temp/c/2005_temp/2005/8182/bcfff519cc4d290a5980ee13c56b39315c2dcba1/iso8601_fields.c/buggy/lib/crm/common/iso8601_fields.c