Tue 16 Jun 2015 14:50 - 15:15 at PLDI Main RED (Portland 256) - Semantics I Chair(s): Hans-J. Boehm

This paper presents KJS, the most complete and throughly tested formal semantics of JavaScript to date. Being executable, KJS has been tested against the ECMAScript 5 conformance test suite, and passes all 2,782 core language tests. Among the existing implementations of JavaScript, only Chrome’s passes all the tests, and no other semantics passes more than 90%. In addition to a reference implementation for JavaScript, KJS also yields a simple coverage metric for a test suite: the set of semantic rules it exercises. Our semantics revealed that the ECMAScript 5 conformance test suite fails to cover several semantic rules. Guided by the semantics, we wrote tests to exercise those rules. The new tests revealed bugs both in production JavaScript engines (Chrome, Safari, Firefox) and in other semantics. KJS is symbolically executable, thus it can be used for formal analysis and verification of JavaScript programs. We verified non-trivial programs and found known security vulnerabilities.

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Tue 16 Jun

Displayed time zone: Tijuana, Baja California change

14:00 - 15:40
14:00
25m
Talk
A Formal C Memory Model Supporting Integer-Pointer Casts
Research Papers
Jeehoon Kang Seoul National University, Chung-Kil Hur Seoul National University, William Mansky University of Pennsylvania, Dmitri Garbuzov University of Pennsylvania, Steve Zdancewic , Viktor Vafeiadis MPI-SWS, Germany
Media Attached
14:25
25m
Talk
Defining the undefinedness of C
Research Papers
Chris Hathhorn University of Missouri, Chucky Ellison University of Illinois, Grigore Roşu University of Illinois at Urbana-Champaign
Media Attached
14:50
25m
Talk
KJS: A Complete Formal Semantics of JavaScript
Research Papers
Daejun Park University of Illinois at Urbana-Champaign, Andrei Stefanescu University of Illinois at Urbana-Champaign, Grigore Roşu University of Illinois at Urbana-Champaign
Media Attached
15:15
25m
Talk
Verdi: A Framework for Formally Verifying Distributed System Implementations
Research Papers
James R. Wilcox University of Washington, Doug Woos University of Washington, Pavel Panchekha University of Washington, Zachary Tatlock University of Washington, Seattle, Xi Wang University of Washington, Michael D. Ernst University of Washington, Thomas Anderson University of Washington
Media Attached