/* >>>------------------------------------------------------------
 * 
 * File: rule_17.4.c,  Module: M2CM-3.2-QAC-8.1.2
 * 
 * RULE 17.4 (Required):
 * Array indexing shall be the only allowed form of pointer
 * arithmetic.
 * 
 * Implemented by messages:
 *  488   Performing pointer arithmetic.
 * 
 *  489   The integer value 1 is being added or subtracted from a
 *        pointer.
 * 
 *  491   Array subscripting applied to an object of pointer type.
 * 
 *  492   Array subscripting applied to a function parameter
 *        declared as a pointer.
 * 
 * <<<------------------------------------------------------------ */

#include "misra.h"
#include "m2cmex.h"

static S16  * gpi;

static S16 test_1704a( const S16 * pi1, const S16 pi2[] );

extern S16 test_1704( void )
{
   S16 i;
   S16 n;
   S16 buf1[ 10 ] = { 0 };
   S16 buf2[ 10 ] = { 0 };
   S16 *p;

   for ( i = 0; i < 10; ++i )
   {
      buf1[i] = i;                            /* OK              */
   }

   p = &buf2[0];

   for ( i = 0; i < 10; ++i )
   {
      *p = i;                                 /* MISRA Violation */
      ++p;
   }

   n = p - &buf2[0];                          /* MISRA Violation */

   gpi = &s16a;

   n = n + test_1704a(buf1, buf2);

   return n;
}


static S16 test_1704a( const S16 * pi1, const S16 pi2[] )
{
   S16 r;
   S16 s;
   S16 t;

   r = gpi[3];                                /* MISRA Violation */
   s = pi1[3];                                /* MISRA Violation */
   t = pi2[3];                                /* OK              */

   return r + s + t;
}