multiple defintions error

[Kriang Lerdsuwanakij]

On Wed, 4 Oct 2000, Atif Shahab wrote:

> if I do the following mapping it doesnt work.
> 
>     struct dummy1 *d1 = (struct dummy1 *) p;
> 
>     struct dummy2 *d2 = (struct dummy2 *) (d1 + sizeof( struct dummy1 ));
> 

What you want is (struct dummy2 *) (d1 + 1).
Since d1 is a pointer to struct dummy1, adding 1 to d1 automatically
advance the pointer by the size of struct dummy1.  gcc behaves
correctly.  The better place to ask this kind of question is in
comp.lang.c newsgroup.

--Kriang