snprintf(aux, INSTR_DEFAULT_STR_SIZE, "%d#%d", src, dst);
xbt_dynar_t d = xbt_dict_get_or_null(keys, aux);
- xbt_assert(xbt_dynar_length(d)!=0,
+ xbt_assert(!xbt_dynar_is_empty(d),
"Trying to get a link key (for message reception) that has no corresponding send (%s).", __FUNCTION__);
char *s = xbt_dynar_get_as (d, 0, char *);
snprintf (key, n, "%s", s);