Why can't you define an external object twice and never use it?

[Doug Gwyn]

In article <53 at looney.twinsun.com> eggert at twinsun.com (Paul Eggert) writes:
>	int X = 0;
>	int X = 0;
>However, none of these prohibitions apply to the above program.  What's wrong?

I don't know why you cite constraints on multiple definition;
the real problem is that you have violated the "only one initialization"
constraint.