Fan-C, a Frama-C plug-in for data flow verification

International audienceDO-178B compliant avionics development processes must both define the data and control flows of embedded software at design level, and verify flows are faithfully implemented in the source code. This verification is traditionally performed during dedicated code reviews, but such intellectual activities are costly and error-prone, especially for large and complex software. In this paper, we present the Fan-C plug-in, developed by Airbus on top of the abstract-interpretation-based value and dataflow analyses of the Frama-C platform, in order to automate this verification activity for C avionics software. We therefore describe the Airbus context, the Frama-C platform, its value analysis and related plug-ins, the Fan-C plug-in, and discuss analysis results and ongoing industrial deployment and qualification activities

Spreading Static Analysis with Frama-C in Industrial Contexts

International audienceThis article deals with the usage of Frama-C to detect runtime-errors. As static analysis for runtime-error detection is not a novelty, we will present significant new usages in industrial contexts, which represent a change in the ways this kind of tool is employed. The main goal is to have a scalable methodology for using static analysis through the development process and by a development team. This goal is achieved by performing analysis on partial pieces of code, by using the ACSL language for interface definitions, by choosing a bottom-up strategy to process the code, and by enabling a well-balanced definition of actors and skills. The methodology, designed during the research project U3CAT, has been applied in industrial contexts with good results as for the quality of verifications and for the performance in the industrial process

Taster, a Frama-C plug-in to enforce Coding Standards

International audienceEnforcing Coding Standards is part of the traditional concerns of industrial soft- ware developments. In this paper, we present a framework based on the open source Frama- C platform for easily developing syntactic, typing (and even some semantic) analyses of C source code, among which conformance to Coding Standards. We report on our successful attempt to develop a Frama-C plug-in named Taster, in order to replace a commercial, off-the-shelf, legacy tool in the verification process of several Airbus avionics software products. We therefore present the types of coding rules to be verified, the Frama-C platform and the Taster plug-in. We also discuss ongoing industrial deployment and qualification activities