Global and Extern Pointers, Arrays

[Asim Jalis]

I just figured out the following bug in my program.  I had a global
array, with some initialized value that I was also declared an extern
pointer in the other files that accessing it.  This turns out to be a
no-no.  The bug went away when I changed the extern definition to an
array also.  

Here is the code:

file.1
	struct x px[1] = { ... };

file.2
	extern *px	/* boinks */
	extern px[]	/* works */

Any ideas as to why this is?

Asim Jalis.