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A Static Bug Detector for Uninitialized Field References in Java Programs
Sunae SEO Youil KIM Hyun-Goo KANG Taisook HAN
Publication
IEICE TRANSACTIONS on Information and Systems
Vol.E90-D
No.10
pp.1663-1671 Publication Date: 2007/10/01 Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e90-d.10.1663 Print ISSN: 0916-8532 Type of Manuscript: PAPER Category: Software Engineering Keyword: Java object initialization, software verification, program analysis, safety,
Full Text: PDF(278KB)>>
Summary:
Correctness of Java programs is important because they are executed in distributed computing environments. The object initialization scheme in the Java programming language is complicated, and this complexity may lead to undesirable semantic bugs. Various tools have been developed for detecting program patterns that might cause errors during program execution. However, current tools cannot identify code patterns in which an uninitialized field is accessed when an object is initialized. We refer to such erroneous patterns as uninitialized field references. In this paper, we propose a static pattern detection algorithm for identifying uninitialized field references. We design a sound analysis for this problem and implement an analyzer using the Soot framework. In addition, we apply our algorithm to some real Java applications. From the experiments, we identify 12 suspicious field references in the applications, and among those we find two suspected errors by manual inspection.
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