Conference article

Walk Backwards to Happiness : Debugging by Time Travel

Simon P. Booth
University of Stirling, UK

Simon B. Jones
University of Stirling, UK

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Published in: Proceedings of the 3rd International Workshop on Automatic Debugging; 1997 (AADEBUG-97)

Linköping Electronic Conference Proceedings 1:14, s. 171-184

Linköping Electronic Articles in Computer and Information Science 009:14, s. 171-184

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Published: 1997-09-10


ISSN: 1650-3686 (print), 1650-3740 (online)


In circumstances when a variable in a program has an incorrect value the process of debugging it is often a process about discovering the history of that variable; or rather the ancestry of the value that it contains. In this paper we propose a new technique for debugging that revolves around being able to trace back through the history of a particular variable or variables that it depends upon. Our development is in the domain of functional programming as the proposal has particular significance in this domain due to the fact that so many standard debugging techniques cannot be used at all.


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