MISRA C:2012  Rule-11.4:  (Advisory)			A conversion should not be performed between a pointer to object and an integer type

Amplification:

A pointer should not be converted into an integer.

An integer should not be converted into a pointer.

Exception:

A null pointer constant that has integer type may be converted into a pointer to object.

Example Code:

#pragma PRQA_MESSAGES_OFF 1056,2982,3210,3408,3447

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


extern volatile uint16_t * pvui;
extern          uint16_t * puim;


extern int16_t rule_1104 ( void )
{
    volatile uint16_t vui = uib;
    pvui = (volatile uint16_t *) 0x1234U;                   /* 0303 */
    pvui = (volatile uint16_t *) vui;                       /* 0303 */

    puim = (uint16_t *) 0x1234U;                            /* 0306 */
    puim = (uint16_t *) uia;                                /* 0306 */
    puim = (uint16_t *) bla;                                /* 0362 */

    bla = puim;                                             /* 0360 */
    bla = (_Bool)puim;                                      /* 0361 */

    ula = (uint32_t)pvui;                                   /* 0303 */
    ula = (uint32_t)puim;                                   /* 0306 */

    return 0;
}

QAC messages that encompass this guideline:

0303	[I] Cast between a pointer to volatile object and an integral type.
0306	[I] Cast between a pointer to object and an integral type.
0360	An expression of pointer type is being converted to type _Bool on assignment.
0361	An expression of pointer type is being cast to type _Bool.
0362	An expression of essentially Boolean type is being cast to a pointer.

Related rules:

Rule-11.6

A cast shall not be performed between pointer to void and an arithmetic type

(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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