Vous pouvez vous abonner à nos annonces de séminaires http://gallium.inria.fr/seminaires/ S E M I N A I R E __ / _` _ / / o / ) __) / / / / / /\/| (___/ (_/ (_ (_ / (__/ / | I N R I A - Paris 2 rue Simone Iff (ou: 41 rue du Charolais) Salle Lions 1, bâtiment C Lundi 23 octobre, 10h30 ------------ Gergö Barany ------------ Inria Paris ========================================= Liveness-Driven Random Program Generation ========================================= Randomly generated programs are popular for testing compilers and program analysis tools, with hundreds of bugs in real-world C compilers found by random testing. However, existing random program generators may generate large amounts of dead code (computations whose result is never used). This leaves relatively little code to exercise a target compiler's more complex optimizations. To address this shortcoming, we introduce liveness-driven random program generation. In this approach the random program is constructed bottom-up, guided by a simultaneous structural data-flow analysis to ensure that the generator never generates dead code. The algorithm is implemented as a plugin for the Frama-C framework. We evaluate it in comparison to Csmith, the standard random C program generator. Our tool generates programs that compile to more machine code with a more complex instruction mix. This work has been presented at LOPSTR 2017.