Incorrect test code generated for BLOB output arguments (4334602)

The code generated for BLOB output arguments and return values is incorrect and doesn't compile.

The generated test code has the following compilation errors:

PL/SQL: Statement ignored
PLS-00306: wrong number or types of arguments in call to 'SUBSTR'
PL/SQL: Statement ignored
PLS-00306: wrong number or types of arguments in call to 'SUBSTR'
PL/SQL: Statement ignored
PLS-00306: wrong number or types of arguments in call to '='

To replicate the problem, please create a test for the following package:

=====================================================
create or replace package test_blob is
  function test_blob(t in blob, s out blob) return blob;
end test_blob;
/

grant execute on test_blob to qcto;

create or replace package body test_blob is
  function test_blob(t in blob, s out blob) return blob is
      l integer;
  begin
      dbms_lob.createtemporary(s, true, dbms_lob.call);
      l := dbms_lob.getlength(t);
      dbms_lob.copy(s, t, l);
      for i in 1 .. l loop
          dbms_lob.write(s, 1, i, dbms_lob.substr(t, 1, l - i + 1));
      end loop;
      return null;
  end test_blob;
begin
  null;
end test_blob;
/
=====================================================

Our release notes state that:

Quest Code Tester will not be able to build tests for arguments of the following types:
      *           Object type methods
      *           BLOB, LONG and LONG RAW

WORKAROUND:
None

STATUS:
Enhancement request ST 59087 has been submitted to Development for consideration in a future release of  Quest Code Tester For Oracle.