ASE 2017

2017 32nd IEEE/ACM International Conference on Automated Software Engineering (ASE 2017), October 30 – November 3, 2017, Urbana-Champaign, IL, USA

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Recommender Systems
Technical Research
Boosting Complete-Code Tool for Partial Program
Hao Zhong and Xiaoyin Wang
(Shanghai Jiao Tong University, China; University of Texas at San Antonio, USA)
Abstract: To improve software quality, researchers and practitioners have proposed various static tools, for various purposes (e.g., detecting bugs, anomalies, and vulnerabilities). Although many such tools are quite powerful, they typically need complete code where all the code names are known. In many scenarios, researchers have to analyze partial code in bug fixes/reports, tutorials, and forums. Partial code is a subset of complete code, and many code names of partial code may be unknown. As a result, although partial code is often syntactically correct, existing complete-code tools cannot analyze partial code. To automate the analysis on partial code, some tools have been implemented. However, due to various limitations, tools for partial code are limited in both their number and analysis capability. Instead of proposing another tool for partial code analysis, we propose a general approach, called GRAPA, that boosts existing tools for complete code to analyze partial code. Our major insight is that after unknown bindings are resolved, tools for complete code can analyze partial code with minor modifications. In particular, GRAPA locates Java archive files to resolve unknown bindings, and resolves the remaining unknown bindings from resolved bindings. To illustrate GRAPA, we implement a tool that leverages the state-of-the-art tool, WALA, to analyze Java partial code. We thus implemented the first tool that is able to build system dependency graphs for partial code, complementing existing tools for partial code analysis. We conduct an evaluation on 8,198 partial-code commits from four popular open source projects. Our results show that GRAPA fully resolved unknown code names for 98.5% bug fixes, with an accuracy of 96.1% in total. Furthermore, our results show the significance of GRAPA’s internal techniques, which provides insights on how to integrate with more complete-code tools to analyze partial code.

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Time stamp: 2019-09-20T18:01:07+02:00