关键词: 自动修复,缺陷定位,失效场景,程序切片,可疑值度量

Abstract: In face of the high cost consumed by program repair in the software life-cycle,researchers from both academia and industry are trying to develop an effective automatic program repair technique to address this problem.Being an essential part of program repair,fault localization plays an important role in repair performance.However,preliminary studies have shown that existing fault localization approaches do not take into account the features of automatic repair,and therefore restrict repair performance.It is vital to design fault localization approaches for automatic repair to improve its performance.To address this issue,this paper proposed a fault localization approach using failure-related contexts for improving automatic program repair.The proposed approach first utilizes program slicing technique to construct a failure-related context,then evaluates the suspiciousness of each element in the context of being faulty,and finally presents this context and its elements with different suspiciousness to automatic program repair techniques for performing repair on faulty programs.The preliminary experimental results demonstrate that the proposed approach is effective to improve automatic repair performance.

Key words: Automatic repair,Fault localization,Failure-related context,Program slicing,Suspiciousness evaluation