QA·C Help - 0834

	0834	[C] Function-like macro '%s()' is being redefined as an object-like macro.

Constraint violations		REFERENCE - ISO:C90-6.8.3 Macro Replacement - Constraints

This is a constraint error

A function-like macro cannot be redefined to be an object-like macro without using the #undef directive first.

For example:


/*PRQA S 553,841,3429,3614 ++*/

#define G1(a ,b) a ## b
#define G2(a ,b) a ## b

#define G1 (0)                /* Message 0834 */

#undef G2

#define G2 (0)                /* OK           */

MISRA C:2012 Rules applicable to message 0834:

Rule-1.1 (Required)

The program shall contain no violations of the standard C syntax and constraints, and shall not exceed the implementation's translation limits

See also:

0845 [C] Object-like macro '%s' is being redefined as a function-like macro.
3614 Macro '%s' is being defined more than once without using #undef to remove the previous definition.

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