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The formally-verified C compiler.


The CompCert C verified compiler is a compiler for a large subset of the C programming language that generates code for the PowerPC, ARM, x86 and RISC-V processors.

The distinguishing feature of CompCert is that it has been formally verified using the Coq proof assistant: the generated assembly code is formally guaranteed to behave as prescribed by the semantics of the source C code.

For more information on CompCert (supported platforms, supported C features, installation instructions, using the compiler, etc), please refer to the Web site and especially the user's manual.


CompCert is not free software. This non-commercial release can only be used for evaluation, research, educational and personal purposes. A commercial version of CompCert, without this restriction and with professional support and extra features, can be purchased from AbsInt. See the file LICENSE for more information.


The CompCert verified compiler is Copyright Institut National de Recherche en Informatique et en Automatique (INRIA) and AbsInt Angewandte Informatik GmbH.


General discussions on CompCert take place on the mailing list.

For inquiries on the commercial version of CompCert, please contact