[Sdcc-user] Void Pointer Arithmetic Warnings

[George O. <G.O...@lb...>]

Hi all.

I'm trying to port some pre-existing code to sdcc for 8051. In some files, 
the original code uses gcc-style void * arithmetic, similar to this:

static unsigned short foo[15];

void funct() {
  void * ptr;

  ptr = foo;  /* ptr is X:0xe01a */

  /* do something */

  ptr = (void *)foo + 1;  /* ptr is still X:0xe01a */
}

Please correct me if I'm wrong but I would expect this code to cause warning 
178: size of void is zero. Correct?
sdcc doesn't produce a warning, while gcc -Wpointer-arith does.

Needless to say, the code does not achieve what the developer originally 
intended, which makes things hard for me to debug. So my question here is, 
is there a way to turn on a warning for this scenario?

Thanks for any tips all.
Regards
geo