QA·C Help - 0853

	0853	[U] Macro arguments contain a sequence of tokens that has the form of a preprocessing directive.

Explicitly undefined		REFERENCE - ISO:C90-6.8.3 Macro Replacement - Semantics

A function-like macro is being expanded and preprocessing directives have been encountered within the list of arguments. This is not permitted.

For example:


/*PRQA S 850,911,2017,2214,3110,3206,3227,3408,3417,3429,3453 ++*/

#define ADD(X, Y) ((X) + (Y))
#define SW

extern int foo ( int a, int b, int c )
{
    int r;

    r = ADD( a,                 /* Message 0907 - syntax error - and others XXXX */
#ifdef SW                       /* Message 0853 */
             b
#else                           /* Message 0853 */
             c
#endif                          /* Message 0853 */
             );

    return r;
}

MISRA-C:2004 Rules applicable to message 0853:

Rule 1.2 (Required)	No reliance shall be placed on undefined or unspecified behaviour.
Rule 19.9 (Required)	Arguments to a function-like macro shall not contain tokens that look like preprocessing directives.