Re: error: array type has incomplete element type

[Ralf Corsepius <ralf dot corsepius at rtems dot org>]

On Wed, 2005-02-02 at 22:12 +0900, Neil Booth wrote:
> Ralf Corsepius wrote:-
> 
> > Technically, it is not obvious to me, why
> > extern struct bla array[];
> > is different from
> > extern struct bla *array;
> 
> They are quite different.  One's a pointer, and one isn't.  In the
> former case you are telling the compiler that a pointer lives at
> location "array" and that some allocation unit allocated room for it,
> in the latter case you get a struct bla and there is no pointer
> allocated.

Thanks, just to make sure I understand correctly, I need to ask a "dummy
question": 

If we want to have an "opaque declaration" (incomplete type, unspecified
size) of an array, are we now supposed to use an explicit pointer to the
array, i.e.

extern struct bla *array;

struct bla {
  ...
};

struct bla real_array[] = { ... };

struct bla *array = real_array;


Ralf