计算机科学 ›› 2016, Vol. 43 ›› Issue (2): 199-203.doi: 10.11896/j.issn.1002-137X.2016.02.043
龚沛,耿楚瑶,郭俊霞,赵瑞莲
GONG Pei, GENG Chu-yao, GUO Jun-xia and ZHAO Rui-lian
摘要： 在软件调试过程中,如何快速、精确地定位程序中的错误代码是软件开发人员普遍关注的问题。基于变异的错误定位方法是一种通过分析被测程序与程序变异体之间的行为相似性来估计语句出错概率、进行错误定位的方法。该方法有较高的错误定位精确度,但由于需对大量程序变异体执行测试用例集,因此其变异执行开销较大。为此提出了一种动态变异执行策略,它通过搜集测试用例执行信息,动态地调整变异体及测试用例的执行顺序,以减少其变异执行开销。实验结果表明,在6个程序包的127个错误版本上,应用提出的动态变异执行策略可在保证错误定位精确度的前提下,减少23%~78%的变异执行开销,显著提高了基于变异的错误定位方法的效率。
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