MISRA C:2012  Rule-18.5:  (Advisory)			Declarations should contain no more than two levels of pointer nesting

Amplification:

No more than two pointer declarators should be applied consecutively to a type. Any typedef-name appearing in a declaration is treated as if it were replaced by the type that it denotes.

Example Code:

#pragma PRQA_MESSAGES_OFF 2983

#include "misra.h"
#include "m3cmex.h"


typedef PC * CHARSTAR;
typedef uint16_t *** PPPU;                          /* 3260 */

static int16_t rule_1805a( PC ** const ptr[] );     /* 3262 */

extern int16_t rule_1805( void )
{
   int16_t     r;
   PC          tab[ 4 ];
   PC         *ptr1;
   PC        **ptr2;
   PC       ***ptr3;                                /* 3262 */
   CHARSTAR  **ptr4;                                /* 3262 */
   CHARSTAR   *const * const ptr5;                  /* 3262 */

   ptr1 = &tab[ 0 ];
   ptr2 = &ptr1;
   ptr3 = &ptr2;

   r = rule_1805a( ptr3 );

   return r;
}

static int16_t rule_1805a( PC ** const ptr[] )      /* 3262 */
{
   PC cx;

   cx = ***ptr;

   return 0;
}

QAC messages that encompass this guideline:

3260	Typedef defined with more than 2 levels of indirection.
3261	Member of struct/union defined with more than 2 levels of indirection.
3262	Object defined or declared with more than 2 levels of indirection.
3263	Function defined or declared with a return type which has more than 2 levels of indirection.

(c) The Motor Industry Research Association, 2012

QA C Source Code Analyser 8.1.2 MISRA C:2012 Compliance Module 1.0 © 2013 Programming Research www.programmingresearch.com

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