2814			Possible: Dereference of NULL pointer.
	NULL pointers

/*PRQA S 506,2017,2983,2986,3199,3203,3227,3408,3602,3673,4600 ++*/

#define NULL (void *)0

void foo(int *p, int *q)
{
    int m;
    int n;

    m = *p;                     /* 2814 */ /* p could be a null pointer */

    if (q == NULL)
    {
        n = 0;
    }
    else
    {
        n = *q;                 /*      */ /* q is NOT null at this point */
    }
}

See also:

• 2810 Constant: Dereference of NULL pointer.
• 2811 Definite: Dereference of NULL pointer.
• 2812 Apparent: Dereference of NULL pointer.
• 2813 Suspicious: Dereference of NULL pointer.
• 2820 Constant: Arithmetic operation on NULL pointer.
• 2821 Definite: Arithmetic operation on NULL pointer.
• 2822 Apparent: Arithmetic operation on NULL pointer.
• 2823 Suspicious: Arithmetic operation on NULL pointer.
• 2824 Possible: Arithmetic operation on NULL pointer.