Computer Science > Software Engineering
[Submitted on 8 Jun 2021 (v1), last revised 28 Jun 2021 (this version, v3)]
Title:Validating Static Warnings via Testing Code Fragments
View PDFAbstract:Static analysis is an important approach for finding bugs and vulnerabilities in software. However, inspecting and confirming static warnings are challenging and time-consuming. In this paper, we present a novel solution that automatically generates test cases based on static warnings to validate true and false positives. We designed a syntactic patching algorithm that can generate syntactically valid, semantic preserving executable code fragments from static warnings. We developed a build and testing system to automatically test code fragments using fuzzers, KLEE and Valgrind. We evaluated our techniques using 12 real-world C projects and 1955 warnings from two commercial static analysis tools. We successfully built 68.5% code fragments and generated 1003 test cases. Through automatic testing, we identified 48 true positives and 27 false positives, and 205 likely false positives. We matched 4 CVE and real-world bugs using Helium, and they are only triggered by our tool but not other baseline tools. We found that testing code fragments is scalable and useful; it can trigger bugs that testing entire programs or testing procedures failed to trigger.
Submission history
From: Ashwin Kallingal Joshy [view email][v1] Tue, 8 Jun 2021 23:44:58 UTC (162 KB)
[v2] Tue, 15 Jun 2021 03:14:16 UTC (132 KB)
[v3] Mon, 28 Jun 2021 22:07:48 UTC (136 KB)
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