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Lightweight Shape Analysis based on Physical Types -- article and artifact

Authors: Nicole,Olivier; Lemerre,Matthieu; Rival,Xavier;

Lightweight Shape Analysis based on Physical Types -- article and artifact

Abstract

This is the artefact for the paper "Lightweight Shape Analysis based on Physical Types" submitted to VMCAI 2022. Abstract: To understand and detect possible errors in programs manipulating memory, static analyses of various levels of precision have been introduced, yet it remains hard to capture both information about the byte-level layout and precise global structural invariants. Classical pointer analyses struggle with the latter, whereas advanced shape analyses incur a higher computational cost. In this paper, we propose a new memory analysis by abstract interpretation that summarizes the heap by means of a type invariant, using a novel kind of physical types, which express the byte-level layout of values in memory. In terms of precision and expressiveness, our abstraction aims at a middle point between typical pointer analyses and shape analyses, hence the lightweight shape analysis name. We pair this summarizing abstraction with a retained and staged points-to predicates which refines information about the memory regions that are in use, hereby allowing strong updates without introducing disjunctions. We show that this combination of abstractions suffices to verify spatial memory safety and non-trivial structural invariants in the presence of low-level constructs such as pointer arithmetic and dynamic memory allocation, on both C and binary code.

Keywords

Abstract interpretation, binary code, C, type safety, memory safety

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
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