NDLI: Assertion-based repair of complex data structures

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Assertion-based repair of complex data structures

Content Provider	ACM Digital Library
Author	Suen, Yuk Lai Elkarablieh, Bassem Garcia, Ivan Khurshid, Sarfraz
Abstract	Programmers have long used assertions to characterize properties of code. An assertion violation signals a corruption in the programstate. At such a state, it is standard to terminate the program, debug it if possible, and re-execute it. We propose a new view: instead of terminating the program, use the violated assertion as a basis of repairing the state of the program and let it continue. We present a novel algorithm to repair complex data structures. Given a structure that violates an assertion that represents its integrity constraints, our algorithm performs a systematic search based on symbolic execution to repair the structure, i.e., mutate it such that the resulting structure satisfies the given constraints. Heuristics to prune search and minimize mutations enable efficient and effective repair. Experiments using libraries and applications, such as a naming architecture and a database engine, show that our prototype efficiently repairs complex structures while enabling systems to recover from potentially crippling errors.
Starting Page	64
Ending Page	73
Page Count	10
File Format	PDF
ISBN	9781595938824
DOI	10.1145/1321631.1321643
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2007-11-05
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Data structure repair Error recovery Symbolic execution Systematic search Assertion-driven development
Content Type	Text
Resource Type	Article

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