[previous] 0835 [next] [C] Macro '%s' is being redefined with different parameter names.
Constraint violations REFERENCE - ISO:C90-6.8.3 Macro Replacement - Constraints

This is a constraint error

A #define directive has attempted to redefine a function-like macro with a definition which is identical in all respects except for the names of the parameters. A #define directive cannot redefine an existing function-like macro unless the definitions are identical (apart from white space differences). It is seldom wise to change the definition of an existing macro, but if it is really necessary, the #undef directive must be used first.

For example: 


/*PRQA S 553,841,2017,3429,3435,3453,3456,3614 ++*/

#define M1(a,b) ((a) + (b))
#define M2(a,b) ((a) + (b))
#define M3(a,b) ((a) + (b))

#define M1(x,y) ((x) + (y))         /* Message 0835 - different parameter names */

#define M2(a,b) ((a) + 2 * (b))     /* Message 0844 - different replacement list */

#undef M3
#define M3(x,y) ((x) + 2 * (y))     /* OK           */

MISRA C:2012 Rules applicable to message 0835:

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:

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
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