identity_map     2558 src/class.c        ScmHashTable *identity_map;
identity_map     2583 src/class.c            data->identity_map =
identity_map     2586 src/class.c            data->identity_map = NULL;
identity_map     2628 src/class.c        if (data->identity_map) {
identity_map     2629 src/class.c            ScmHashEntry *e = Scm_HashTableAddRaw(data->identity_map, ptr, NULL);