DUCT: An Interactive Define-Use Chain Navigation Tool for Relative Debugging

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This paper describes an interactive tool that facilitates following define-use chains in large codes. The motivation for the work is to support relative debugging, where it is necessary to iteratively refine a set of asser-tions between different versions of a program. DUCT is novel because it exploits the Microsoft Intermediate Language (MSIL) that underpins the.NET Framework. Accordingly, it works on a wide range of programming languages without any modification. The paper describes the design and implementation of DUCT, and then illustrates its use with a small case study.