MISRA.USE.DEFINE

Non-guarding macro definition.

MISRA-C++ Rule 16—2—1 (required): The pre-processor shall only be used for file inclusion and include guards

This rule is also covered by MISRA.USE.EXPANSION and MISRA.USE.WRONGDIR.

Rationale

C++ provides safer ways of achieving what is often done using the pre-processor, by way of inline functions and constant declarations.

Example

#ifndef HDR      // Compliant
#define HDR      // Compliant
#define X(Y) (Y) // Non-compliant
#endif