Exception handling based alias analysis technique in software maintenance

For the error diagnosis problem in object-oriented software maintenance,this paper proposes a novel alias analysis technique.By extending the control flow graph of a program,exception handling structures are analyzed.Based on the extended control flow graph,the process of alias analysis is divided into two phases,flow sensitive intra-class analysis and requirements based inter-class analysis,to achieve a complete alias analysis of the whole system,and effectively improves the efficiency of error diagnosis for programs which contain exception handling structures.