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# This test confirms that CORBA::is_nil works
TAO implements `CORBA::is_nil` as a function template, which merely
checks the argument for zero. The template is specialized for
`CORBA::Object_ptr`, and this specialization additionally checks
whether a non-NULL argument might be an unevaluated nil object
reference.
Because template specialization is used and not an ordinary overloaded
function, the specialized variant is *not* called for pointers to
derived classes. This will work only if TAO ensures that all nil
object references that have been narrowed to a derived class are
converted to null pointers, i.e., to ensure that the generic template
produces the corrcet result.
This test has the server return a nil object reference and the client
uses lazy resource usage, to comfirm that CORBA::is_nil corrcetly
identifies the nil object reference.
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