MISRA Discussion Forums

Hello,

I want to know if it is possible to define a Boolean type and do not use the one defined in the stdbool.h. Can I define Boolean like this:

Code:
typedef uint8_t boolean;

and

Code:
#define TRUE 0x1

and

Code:
#define FALSE 0x0

? And If I define Boolean in this way, what operations, which if done using standard booleans would I violate?

Sorry in advance If the question is not too clear and If I made some mistake.

The MISRA-C working group recommends the use of the stdbool.h version of bool where available.
However Appendix D.6 on Boolean constants says:
" Tools may also provide additional ways of identifying essential Boolean types."
It is therefore possible to define a boolean type as you have done. The MISRA C:2012 rules on essentially boolean types will then apply.

andrea96b1

misra-c