1 # MISRA-C Deviations {#coreMISRA_Exceptions_pg}
3 CMSIS-Core (Cortex-M) uses the common coding rules for CMSIS components that are documented in [CMSIS Introduction](../General/index.html).
5 CMSIS-Core (Cortex-M) violates the following MISRA-C:2012 rules:
7 - Directive 4.9, function-like macro defined.
8 - Violated since function-like macros are used to generate more efficient code.
10 - Rule 1.3, multiple use of '#/##' operators in macro definition.
11 - Violated since function-like macros are used to generate more efficient code.
13 - Rule 11.4, conversion between a pointer and integer type.
14 - Violated because of core register access.
16 - Rule 11.6, cast from unsigned long to pointer.
17 - Violated because of core register access.
19 - Rule 13.5, side effects on right hand side of logical operator.
20 - Violated because of shift operand is used in macros and functions.
22 - Rule 14.4, conditional expression should have essentially Boolean type.
23 - Violated since macros with several instructions are used.
25 - Rule 15.5, return statement before end of function.
26 - Violated to simplify code logic.
28 - Rule 20.10, '#/##' operators used.
29 - Violated since function-like macros are used to generate more efficient code.
31 - Rule 21.1, reserved to the compiler.
32 - Violated since macros with leading underscores are used.