Flux: Liquid Types for Rust
Flux: Liquid Types for Rust
复制标题
助焊剂:用于防锈的液体类型
DOI:
10.1145/3591283
复制
发表时间:
2023
影响因子:
--
通讯作者:
Jhala, Ranjit
中科院分区:
文献类型:
--
作者:
Lehmann, Nico;Geller, Adam T.;Vazou, Niki;Jhala, Ranjit
We introduce Flux, which shows how logical refinements can work hand in glove with Rust's ownership mechanisms to yield ergonomic type-based verification of low-level pointer manipulating programs. First, we design a novel refined type system for Rust that indexes mutable locations, with pure (immutable) values that can appear in refinements, and then exploits Rust's ownership mechanisms to abstract sub-structural reasoning about locations within Rust's polymorphic type constructors, while supporting strong updates. We formalize the crucial dependency upon Rust's strong aliasing guarantees by exploiting the Stacked Borrows aliasing model to prove that "well-borrowed evaluations of well-typed programs do not get stuck". Second, we implement our type system in Flux, a plug-in to the Rust compiler that exploits the factoring of complex invariants into types and refinements to efficiently synthesize loop annotations-including complex quantified invariants describing the contents of containers-via liquid inference. Third, we evaluate Flux with a benchmark suite of vector manipulating programs and parts of a previously verified secure sandboxing library to demonstrate the advantages of refinement types over program logics as implemented in the state-of-the-art Prusti verifier. While Prusti's more expressive program logic can, in general, verify deep functional correctness specifications, for the lightweight but ubiquitous and important verification use-cases covered by our benchmarks, liquid typing makes verification ergonomic by slashing specification lines by a factor of two, verification time by an order of magnitude, and annotation overhead from up to 24% of code size (average 14%), to nothing at all.
登录
查看更多内容
DOI:
10.1109/sp46215.2023.10179357
发表时间:
2023-05
期刊:
2023 IEEE Symposium on Security and Privacy (SP)
影响因子:
--
作者:
Evan Johnson;Evan Laufer;Zijie Zhao;D. Gohman;Shravan Narayan;S. Savage;D. Stefan;Fraser Brown-Fraser-Brow
通讯作者:
Evan Johnson;Evan Laufer;Zijie Zhao;D. Gohman;Shravan Narayan;S. Savage;D. Stefan;Fraser Brown-Fraser-Brow
DOI:
--
发表时间:
2005
期刊:
International Symposium on Practical Aspects of Declarative Languages
影响因子:
--
作者:
Dengping Zhu;H. Xi
通讯作者:
H. Xi
DOI:
--
发表时间:
2022
期刊:
Proc. ACM Program. Lang.
影响因子:
--
作者:
Son Ho;Jonathan Protzenko
通讯作者:
Jonathan Protzenko
DOI:
--
发表时间:
2016
期刊:
International Conference on Computer Aided Verification
影响因子:
--
作者:
K. Leino;Clément Pit
通讯作者:
Clément Pit
DOI:
10.1145/3453483.3454036
发表时间:
2021-06
期刊:
Proceedings of the 42nd ACM SIGPLAN International Conference on Programming Language Design and Implementation
影响因子:
--
作者:
Michael Sammler;Rodolphe Lepigre;R. Krebbers;Kayvan Memarian;Derek Dreyer;D. Garg
通讯作者:
Michael Sammler;Rodolphe Lepigre;R. Krebbers;Kayvan Memarian;Derek Dreyer;D. Garg