MISRA Discussion Forums - MISRA AC GMG discussions

MISRA AC GMG 2025 review

Mon, 27 Oct 2025 09:04:17 +0000

The MISRA AC working group is pleased to announce that updated drafts of its documents MISRA AC GMG and MISRA AC SLSF have been prepared. We will be conducting a public review of these drafts.

Review sign-up is now closed and we will be in touch shortly with those who have responded.

MISRA AC GMG:2023 rule 011 - Erratum

Tue, 14 Nov 2023 14:41:50 +0000

Please note the following error in rule MISRA AC GMG 011 of some impressions of MISRA AC GMG:2023:

The text

Only the four relational operators: ">", "<", ">=" and "=" may be used for comparing floating-point values

should instead read

Only the four relational operators: ">", "<", ">=" and "<=" may be used for comparing floating-point values

MISRA AC GMG:2023 released

Wed, 09 Aug 2023 16:23:45 +0000

We are pleased to announce a new version of MISRA AC GMG has been released.

The MISRA Autocode (AC) family of documents deals with the application of language subsets for automatic code generation purposes. This document, MISRA AC GMG, contains the best practices, captured as a set of design and style guidelines, for the use in all graphical modelling environments for producing models that will be used for simulation and automatic code generation. Updated in June 2023, this second edition is the current version of MISRA AC GMG. This document supersedes the first edition (published in 2009).

The MISRA webstore provides single-user PDFs and you can purchase a hardcopy via a "print on demand" service at the following link. Please be sure to select the most appropriate “marketplace” for your location to expedite delivery. MISRA AC GMG:2023 hardcopy

MISRA AC guidelines public review Jan 21

Fri, 22 Jan 2021 16:34:58 +0000

MISRA is pleased to announce that drafts of new versions of its Autocode documents MISRA AC GMG "Generic Modelling Design and Style Guidelines" and MISRA AC SLSF "Modelling Design and Style Guidelines for the Application of Simulink and Stateflow" will shortly be available for public review.

The revision process has focused on the following:

Addressing feedback raised on the previous versions
Seeking to reduce areas of ambiguity and inconsistency
Updating SLSF for more recent revisions of the MathWorks toolset with expanded capabilities and, in some areas, modelling semantics
Further clarifying and extending Stateflow usage guidelines to define more tightly a standardized usage style from a subset of Stateflow’s capabilities

If you would like to be considered as a reviewer please download the attached file and return it to us via email. We will review applications and be in touch with next steps in due course. Please note that in the case of high levels of interest we may not be able to accept all offers of reviews.

Updated Feb 2021. The call for reviewers is now closed and we will be sending out the review package shortly. Thank you to everyone that has expressed interest

Status of MISRA AC documents March 2014

Tue, 11 Mar 2014 12:03:38 +0000

The MISRA Autocode (AC) suite of documents will be undergoing a refresh in the near future to bring them up to date and align them with the new MISRA branding and other MISRA documents. MISRA AC GMG and MISRA AC SLSF will be reviewed and updated.

Based on the experience of MISRA AC contributors in using the current documents, the number and organization of documents is also up for consideration. In particular, it is believed that the code generation specific layer of guideline documents, where MISRA AC TL sits and where a MISRA AC EC offering could sit, is better supported by tool vendors themselves; the frequency of updates to auto-code generation tools has proved too high for a user-based body such as MISRA to keep track of, and it is in the interest of the tool vendors to provide guidelines directly to support their customers in meeting their respective industry software development standards.

MISRA AC TL is now seven years old and far removed from the current version of the tool offered by its vendor. This document will be deprecated and no longer supported by MISRA from 1 June 2014.

MISRA AC AGC will remain available and supported for legacy users of MISRA C:2004. It should be noted that the current version MISRA C:2012 integrates requirement for automatically-generated C code.

IEC 26262

Sun, 31 Jan 2010 19:38:53 +0000

Hi Board,

exist any relation/ raccamandation in IEC 26262 to follow the new MISRA AC rules ?

Thanks Giacomo

Welcome

Mon, 01 Jun 2009 11:28:15 +0000

This new forum has been set up for asking questions about and discussing MISRA's "Generic modelling design and style guidelines" (otherwise known as MISRA AC GMG).

The Working Group responsible for the MISRA AC GMG document will consider questions posted here and if appropriate give an official response (which will be posted by the "MISRA Reply" user). Any other comments and responses from any posters shall not be considered an official MISRA position.

We expect to respond to questions on an approximately monthly basis so if you don't hear from us, please be patient.

Steve Montgomery
MISRA Autocode Guidelines Project Leader