Using OCL-queries for debugging C++

This demonstration will present a design and preliminary implementation of the OCL query-based debugger, OQBD, which is a tool to debug C++ programs using queries formulated in the object constraint language, OCL. We will illustrate how queries can be formulated to verify constraints such as class invariants and pre and post-conditions for member functions. The queries can be reused after code generation to verify the design contract, as part of the testing process, and to facilitate fault detection.