Dezyne 2.17.2 is a bug-fix release. Enjoy!
The Dezyne developers.

Download

git clone git://git.savannah.nongnu.org/dezyne.git

Here are the compressed sources and a GPG detached signature[*]:
dezyne-2.17.2.tar.gz
dezyne-2.17.2.tar.gz.sig

Here are the SHA1 and SHA256 checksums:

cba66f6c26884afa77afbcf304653e390fde8451  dezyne-2.17.2.tar.gz  
a3c2fcff862569943e19e195919c9cbd05e95d4b629974263382c50832b70aec  dezyne-2.17.2.tar.gz

[*] Use a .sig file to verify that the corresponding file (without the .sig suffix) is intact. First, be sure to download both the .sig file and the corresponding tarball. Then, run a command like this:

gpg --verify .sig

If that command fails because you don't have the required public key, then run this command to import it:

gpg --keyserver keys.gnupg.net --recv-keys 1A858392E331EAFDB8C27FFBF3C1A0D9C1D65273

and rerun the gpg --verify command.

Alternatively, Dezyne can be installed using GNU Guix:

guix pull  
guix install dezyne

NEWS

Changes in 2.17.2 since 2.17.1

• Code

  • The experimental C code generator now supports out-parameters.

• Commands

  • The different queue sizes: component, defer, external can now be set individually using --queue-size, --queue-defer and --queue-size-external. The defaults are respectively: 3, 2 and 1.

• Verification

  • The error on failing the determinism check is no longer ambiguous by removing "due to overlapping guards" from the message.

• Simulate

  • The error on failing the determinism check is no longer ambiguous by removing "due to overlapping guards" from the message.

• Noteworthy bug fixes

  • A bug was fixed in the type name lookup of a formal parameter binding (a <- b).

  • A bug was fixed in generalized integer expressions of form a-b-c.

  • A bug was fixed in the normalization involving implicit temporaries that would crash the verifier on constructs like g (f ($0$)).

  • A bug was fixed in the verifier that could lead to a false positive for models that have a blocking skip race.

  • The verifier no longer hangs attempting to create a witness for a livelock in a non-deterministic interface.

  • The well-formedness check now reports declarative statements inside a function as being incorrect.

  • A bug was fixed in the verifier for reporting queue-full cases for an external port. As a result, queue-full is now reported during the illegal check and not as part of the deadlock check.

About Dezyne

Dezyne is a programming language and a set of tools to specify, validate, verify, simulate, document, and implement concurrent control software for embedded and cyber-physical systems.

The Dezyne language has formal semantics expressed in mCRL2 developed at the department of Mathematics and Computer Science of the Eindhoven University of Technology (TUE). Dezyne requires that every model is finite, deterministic and free of deadlocks, livelocks, and contract violations. This is achieved by means of the language itself as well as builtin verification through model checking. This allows the construction of complex systems by assembling independently verified components.

Dezyne is free software, it is distributed under the terms of the GNU Affero General Public Licence version 3 or later.

About Verum

Verum, the organization behind the Dezyne language, is committed to continuing to invest in the language for the benefit of all its users. Verum assists its customers and partners in solving the software challenges of today and tomorrow, by offering expert consultancy on the application of the Dezyne language and the development and use of its tools, as well as on Verum's commercial tools like Verum-Dezyne's IDE support based on the LSP (Language Server Protocol), interactive integrated graphics, interactive simulation, (custom) code generation and (custom) runtime library support.