CompCert in Airbus

https://chatgpt.com/share/6773ca3f-f444-8007-95f3-6b8f576525df

https://x.com/stojaaan/status/1874012894914109741

Airbus employs the CompCert formally verified C compiler in the development of safety-critical avionics software. Specifically, at their Toulouse facility, Airbus has integrated CompCert into several projects, although the exact details of these projects remain undisclosed. https://www.absint.com/compcert/index.htm

The decision to adopt CompCert was driven by a need to enhance performance, particularly by reducing the Worst-Case Execution Time (WCET) of their software. A feasibility study conducted between 2012 and 2013 demonstrated that using CompCert led to a 12% improvement in WCET, surpassing their initial target of 11%. https://projects.laas.fr/IFSE/FMF/J3/slides/P05_Jean_Souyiris.pdf

By utilizing CompCert, Airbus benefits from the compiler's formal verification, which mathematically ensures that the compiled code preserves the semantics of the source code. This level of assurance is crucial in the development of safety-critical systems, as it reduces the risk of miscompilation and enhances overall software reliability. https://www.absint.com/compcert/index.htm

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