CLAS: a reverse engineering tool

CLAS (C Language Program Analysis System) is a reverse engineering tool intended for use in the verification and validation (V&V) of software programs developed in the ANSI 'C' language. By analysing the source code, CLAS generates data according to two conceptual models of software programs viz, the entity-relationship (ER) model and control flow graph (CFG) model. The tools within CLAS, make use of this data, to provide different graphical views of the programs. We discuss the features provided by CLAS and show how these can aid in automating some aspects of V&V and quality assessment activities.