#define find_field(key, list) real_find_field(key, list, NULL)
#define find_field_number(key, pt_nb) real_find_field(key, NULL, pt_nb)
#define find_declared_field(key) find_field(key,NULL)
#define find_field(key, list) real_find_field(key, list, NULL)
#define find_field_number(key, pt_nb) real_find_field(key, NULL, pt_nb)
#define find_declared_field(key) find_field(key,NULL)