* | EVENT_LEAVE call_no call_detail+
*
* call_sig = sig_id ( name arg_names )?
*
* call_detail = ARG index value
* | RET value
* | EVENT_LEAVE call_no call_detail+
*
* call_sig = sig_id ( name arg_names )?
*
* call_detail = ARG index value
* | RET value