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Sun 20 - Fri 25 October 2019 Athens, Greece
Wed 23 Oct 2019 11:45 - 12:07 at Attica - Abstract Interpretation Chair(s): John Hughes

Static analysis tools for JavaScript must strike a delicate balance, achieving the level of precision required by the most complex features of target programs without incurring prohibitively high analysis time.
For example, reasoning about dynamic property accesses sometimes requires precise relational information connecting the object, the dynamically-computed property name, and the property value.
Even a minor precision loss at such critical program locations can result in a proliferation of spurious dataflow that renders the analysis results useless.

We present a technique by which a conventional non-relational static dataflow analysis can be combined soundly with a value refinement mechanism to increase precision on demand at critical locations.
Crucially, our technique is able to incorporate relational information from the value refinement mechanism into the non-relational domain of the dataflow analysis.

We demonstrate the feasibility of this approach by extending an existing JavaScript static analysis with a demand-driven value refinement mechanism that relies on backwards abstract interpretation.
Our evaluation finds that precise analysis of widely used JavaScript utility libraries depends heavily on the precision at a small number of critical locations that can be identified heuristically, and that backwards abstract interpretation is an effective mechanism to provide that precision on demand.

Wed 23 Oct
Times are displayed in time zone: (GMT+03:00) Beirut change

11:00 - 12:30: OOPSLA - Abstract Interpretation at Attica
Chair(s): John HughesChalmers University of Technology, Sweden
splash-2019-oopsla11:00 - 11:22
Zhuo ZhangPurdue University, Wei YouPurdue University, Guanhong TaoPurdue University, Guannan WeiPurdue University, Yonghwi KwonUniversity of Virginia, Xiangyu ZhangPurdue University
DOI Pre-print
splash-2019-oopsla11:22 - 11:45
Guannan WeiPurdue University, Yuxuan ChenPurdue University, Tiark RompfPurdue University
splash-2019-oopsla11:45 - 12:07
Benno SteinUniversity of Colorado Boulder, Benjamin Barslev NielsenAarhus University, Bor-Yuh Evan ChangUniversity of Colorado Boulder | Amazon, Anders MøllerAarhus University
DOI Pre-print
splash-2019-oopsla12:07 - 12:30
Sven KeidelJGU Mainz, Sebastian ErdwegJGU Mainz