Referencing NULL pointers

[Richard Tobin]

In article <9838 at xanth.cs.odu.edu> kremer at cs.odu.edu (Lloyd Kremer) writes:
>This is true for integral constant 0, but could you not access memory
>location 0 by writing:

>	p = 0;  /* integer variable that happens to be set to zero */
>	data = *(int *)p;  /* no constant expression in this line */

Probably, but there's nothing to stop a cast doing something strange.
This may work better (but of course is still completely unreliable):

   union {int i; int *p} x;

   x.i = 0;
   data = *x.p;

-- Richard
-- 
Richard Tobin,                       JANET: R.Tobin at uk.ac.ed             
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