Before revision: Those rules, with minor changes, formed the basis of the first edition of MISRA C. First edition: 1998 (rules, required/advisory) Second edition: 2004 (rules, required/advisory) Third edition: 2012 (directives; rules, Decidable/Undecidable) MISRA compliance: 2016, updated 2020 For the first two editions of MISRA-C (1998 and 2004) all Guidelines were considered as Rules.
After revision: MISRA C:2023 (MISRA C Third edition, Second revision)Those rules, with minor changes, formed the basis of the first edition of MISRA C. First edition: 1998 (rules, required/advisory) Second edition: 2004 (rules, required/advisory) Third edition: 2012 (directives; rules, Decidable/Undecidable) MISRA compliance: 2016, updated 2020 For the first two editions of MISRA-C (1998 and 2004) all Guidelines were considered as Rules.