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Effective program debugging based on execution slices and inter-block data dependency

JOURNAL OF SYSTEMS AND SOFTWARE 2006年第7期79卷 891-903页

作者： Wong, W. Eric Qi, Yu Univ Texas Dept Comp Sci Richardson TX 75083 USA

Localizing a fault in program debugging is a complex and time-consuming process. In this paper we present a novel approach using execution slices and inter-block data dependency to effectively identify the locations of program faults. An execution slice with respect to a given test case is the set of code executed by this test, and two blocks are data dependent if one block contains a definition that is used by another block or vice versa. Not only can our approach reduce the search domain for program debugging, but also prioritize suspicious locations in the reduced domain based on their likelihood of containing faults. More specifically, we use multiple execution slices to prioritize the likelihood of a piece of code containing a specific fault. In addition, the likelihood also depends oil whether this piece of code is data dependent on other suspicious code. A debugging tool, DESiD, was developed to support our method. A case study that shows the effectiveness of our method in locating faults on an application developed for the European Space Agency is also reported. (c) 2005 Elsevier Inc. All rights reserved.

关键词： software testing fault localization program debugging execution slice inter-block data dependency DESiD

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