Re: cppcheck sept 18 redux

[Vitaliy Margolen]

Mike Kaplinskiy wrote:
> It actually does not dereference anything. Try passing null into the
> function - it will work just fine. This is a special case because the
> array isn't dynamically allocated but is part of the struct, which
> means that dmW->dmFormName == (dmW+__offset of dmFormName) and not
> *(dmW+__offset of dmFormName). You can try writing a test program
> yourself - it will run just fine.
> It does dereference the pointer. Here is your simple test. Compile it and
> run it. See what happens.

#include <stdio.h>

typedef struct _s_test
{
    void *pointer;
}  s_test;

int main()
{
    s_test *s = NULL;
    long diff = (const char*)s->pointer - (const char*)s;
    printf("diff=%ld\n", diff);

    return 0;
}

Vitaliy.