DIFFFIX: Incrementally Fixing AST Diffs via Context and Type Information
This program is tentative and subject to change.
The abstract syntax tree differencing (ASTDiff) technique aims to capture syntactic code changes in terms of comparing the differences between a pair of ASTs of a program, which has been widely used in various program analysis or testing tasks, such as code review, clone detection, and regression testing. A key issue to ASTDiff lies in the accurate mappings between nodes of two ASTs. However, most existing approaches often fail to generate such perfect diffs due to the gap between diverse code changes and unsound node matching heuristics. Our in-depth investigation reveals that most inaccurate mappings are caused by the ignorance of context- and type-specific constraints. Accordingly, we propose an AST diff fixing approach DIFFFIX that leverages both node’s context and type constraints to iteratively and incrementally fix imperfect diffs. Comprehensive experiments have been conducted to evaluate the effectiveness of DIFFFIX through the application of it to fix diffs generated by five state-of-the-art ASTDiff techniques. The experimental results demonstrate that DIFFFIX can improve the perfect diff rate of these baseline techniques by 5.25% to 51.12% with negligible time overhead.
This program is tentative and subject to change.
Wed 19 NovDisplayed time zone: Seoul change
14:00 - 15:30 | |||
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14:20 10mTalk | Towards More Accurate Static Analysis for Taint-style Bug Detection in Linux Kernel Research Papers Haonan Li University of California at Riverside, USA, Hang Zhang Indiana University, Kexin Pei The University of Chicago, Zhiyun Qian University of California at Riverside, USA Pre-print | ||
14:30 10mTalk | Automated Insertion of Flushes and Fences for Persistency Research Papers Yutong Guo University of California, Irvine, Weiyu Luo University of California, Irvine, Brian Demsky University of California at Irvine | ||
14:40 10mTalk | DIFFFIX: Incrementally Fixing AST Diffs via Context and Type Information Research Papers Guofeng Zeng University of Science and Technology Beijing, Chang-ai Sun University of Science and Technology Beijing, Kai Gao University of Science and Technology Beijing, Huai Liu Swinburne University of Technology | ||
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15:20 10mTalk | On the Correctness of Software Merge Research Papers Akira Mori National Institute of Advanced Industrial Science and Technology, Japan, Masatomo Hashimoto Chiba Institute of Technology, Japan | ||