PrivateResult: advice for functions returning object with
               non-public default constructor/assignment op.
============================================================
call result 3: 4711
* incrementing result id
call result 2: 4712
call result 1: 4712
call result 3: 4711
* incrementing result id
call result 2: 4712
call result 1: 4712
execution result 3: 4712
* incrementing result id
execution result 2: 4713
execution result 1: 4713
============================================================
