🚀 go-pugleaf

I ask because a standard trick for walking an array A of size S is:

Thing *a = A;
Thing *fence = a + S;
for (; a < fence; ++a)
    /* use a */;

but in my case, if S happens to be 0, a will start out NULL. This makes we
worry about both the value of fence, and, if that works, the behaviour
of (a < fence), which I hope is (NULL < NULL), which I hope the standard
blesses as reliably false, but I have this feeling that it won't.

I know I can use int i; for (i = 0; i < S; ++i) but I was
hoping to avoid the extra math at array dereference time. I know
I can preface the whole thing with if (a != NULL) but the fun of
a standard is knowing what you can get away with. :)

Comments?